Retrospective Drug Use Criteria Handbook
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C-1. About
The Texas Drug Utilization Review (DUR) Board evaluates criteria used in retrospective and prospective drug utilization reviews each quarter for Medicaid. HHSC bases the criteria evaluations on drug use information available on the compendia and peer-reviewed medical literature. Criteria and standards are periodically revised to ensure they reflect the current compendia and prescribing recommendations.
HHSC may revise the criteria for individual medications or drug classes determined by the DUR Board and VDP staff based on safety issues or appropriate use. All criteria contain the following categories:
- Dosage/Maximum Dosage
- Duration of Therapy
- Duplicative Therapy
- Drug-Drug Interactions (significant)
Staff develops new retrospective criteria when the DUR Board deems it necessary, based on therapeutic and clinical materials presented at the DUR board. The information is for the convenience of the public, and HHSC is not responsible for any errors in transmission or any errors or omissions in the content. Staff with the Drug Information Service, UT Health San Antonio, and the College of Pharmacy at the University of Texas at Austin review and update the criteria on behalf of HHSC.
C-2. Contact
Mailing Address
Texas Vendor Drug Program (MC-2250)
Attention: Drug Use Criteria
Texas Health and Human Services
701 W. 51st St.
Austin, TX 78751
C-3. Drug Use Compendia
The resources identified in the compendia provide comprehensive, organized data concerning FDA-approved medications and biologicals. The list includes pharmacology, dosages, recommended use in specific disease states, adverse reactions, and drug interactions.
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: June 8, 2021).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2021. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed June 8, 2021.
- Facts and Comparisons eAnswers [database online]. Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2021; Accessed June 8, 2021.
- AHFS Drug Information 2021. Jackson, WY: Teton Data Systems, 2021. Electronic Medical Library. Available at: http://online.statref.com.libproxy.uthscsa.edu/. Accessed June 8, 2021.
- Lexi-Drugs. Lexicomp Online [database online]. Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2021. Available at: https://online-lexi-com.ezproxy.lib.utexas.edu/lco/action/home. Accessed June 8, 2021.
- DiPiro JT, Yee GC, Posey LM, et al. Pharmacotherapy: a pathophysiologic approach. 11th ed. New York, McGraw-Hill, 2020. Access Pharmacy Web site. Available at: http://accesspharmacy.mhmedical.com.ezproxy.lib.utexas.edu/content.aspx?bookid=1861§ionid=146065193. Accessed June 8, 2021.
- Alldredge BK, Corelli RL, Ernst ME, et al., eds. Koda-Kimble and Young’s applied therapeutics: the clinical use of drugs. 10th ed. Philadelphia: Lippincott Williams & Wilkins; 2013.
- Chisholm-Burns MA, Schwinghammer TL, Malone PM, et al., eds. Pharmacotherapy: principles and practice. 5th ed. New York, McGraw-Hill, 2019. Access Pharmacy Web site. Available at: https://ppp-mhmedical-com.ezproxy.lib.utexas.edu/book.aspx?bookid=2440. Accessed June 10, 2021.
- Post TW, ed. UpToDate. Waltham, MA: pToDate Inc. https://www.uptodate.com. Accessed June 8, 2021.
- Hughes HK, Kahl LK, eds. The Harriet Lane handbook. 22nd ed. Philadelphia, PA: Elsevier; 2021. Available at: https://www-clinicalkey-com.ezproxy.lib.utexas.edu. Accessed June 10, 2021.
- Pediatric and Neonatal Lexi-Drugs. Lexicomp Online [database online]. Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2021. Available at: https://online-lexi-com.ezproxy.lib.utexas.edu/lco/action/home. Accessed June 8, 2021.
- National Institutes of Health. National Library of Medicine. DailyMed Drug Database. Accessed June 25, 2021.
- StatPearls [Internet]. StatPearls Publishing: 2021. Accessed June 25, 2021.
- Manufacturer websites and package inserts.
- Various practice guidelines.
C-4. Drug Use Criteria
Acetylcholinesterase Inhibitors
Acetylcholinesterase Inhibitors - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 21, 2023
- July 23, 2021
- May 24, 2019
- May 2017
- June 2015
- Oct. 2013
- Dec. 2011
- Jan. 2010
- Initially developed
- April 2006
1. Dosage
1.1. Adults
Alzheimer’s disease is associated with significant losses in cholinergic neurons and decreased concentrations of acetylcholine, a neurotransmitter significantly involved in learning and memory processes. Acetylcholinesterase inhibitors (ACIs) exert pharmacologic effects by increasing availability of intrasynaptic acetylcholine in the presence of intact cholinergic neurons. All available ACIs are FDA-approved in adults for the management of mild to moderate Alzheimer’s dementia, while donepezil is also FDA-approved for management of severe Alzheimer’s disease. Additionally, rivastigmine (Exelon) is FDA-approved for use in mild-to-moderate dementia associated with Parkinson’s disease.
A combination product containing donepezil and memantine extended-release (Namzaric) is also FDA-approved for use in patients with moderate to severe Alzheimer’s dementia stabilized on donepezil and memantine. Memantine, a non-competitive N-methyl D-aspartate (NMDA) receptor antagonist, exerts pharmacologic effects by blocking glutamate activity, the key excitatory neurotransmitter in the central nervous system. Glutamate is released into synapses when certain neurons die and activates NMDA receptors, causing over excitation, an influx of calcium ions and, ultimately, death of downstream neurons. NMDA receptor activation is thought to be one of the main causes of neurodegeneration in various types of dementia, including Alzheimer’s-associated dementia. ACI monotherapy and combination therapy recommended dosages are summarized in Table 1 and Table 2, respectively. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form and Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
donepezil (Adlarity®) | transdermal patch (5 mg/24 hours, 10 mg/24 hours) | Mild to severe Alzheimer’s dementia | One 10 mg/24 hours transdermal patch weekly (10 mg/day) |
donepezil (Aricept, generics) | tablets (5 mg, 10 mg, 23 mg) | mild to moderate Alzheimer’s dementia | 10 mg/day, as a single dose |
orally disintegrating tablets (5 mg, 10 mg) | 10 mg/day, as a single dose | ||
moderate to severe Alzheimer’s dementia | 23 mg/day, as a single dose | ||
galantamine (Razadyne, Razadyne ER, generics) |
immediate-release tablets (4 mg, 8 mg, 12 mg) oral solution (4 mg/ml) |
mild to moderate Alzheimer’s dementia | 24 mg/day, in 2 divided doses |
extended-release capsules (8 mg, 16 mg, 24 mg) | mild to moderate Alzheimer’s dementia | 24 mg/day once daily | |
rivastigmine (Exelon, generics) | immediate-release capsules (1.5 mg, 3 mg, 4.5 mg, 6 mg) | mild to moderate Alzheimer’s dementia | 12 mg/day, in 2 divided doses |
mild/ moderate Parkinson’s disease dementia | 12 mg/day, in 2 divided doses | ||
transdermal (extended-release) patch (4.6 mg/24 h, 9.5 mg/24 h, 13.3 mg/24 h) | Mild to severe Alzheimer’s dementia | 13.3 mg/24 h | |
mild/ moderate Parkinson’s disease dementia | 13.3 mg/24 h |
Treatment Indication | Drug Name | Dosage Form and Strength | Maximum Recommended Dosage |
---|---|---|---|
moderate to severe Alzheimer’s dementia in patients stabilized on donepezil alone or memantine and donepezil | memantine extended-release/donepezil (Namzaric) | capsules (7 mg/10 mg, 14 mg/10 mg, 21 mg/10 mg, 28 mg/10 mg) | 28 mg/10 mg once daily |
Although not FDA-approved, ACIs have also been evaluated for use in vascular dementia, dementia with Lewy bodies, post stroke aphasia, and memory improvement in multiple sclerosis patients11-14 .
1.1.1. Renal Impairment
Patients prescribed galantamine with moderate renal impairment [creatinine clearance (CrCl) 9-59 ml/min] should have doses titrated cautiously; dosages should not exceed 16 mg daily. Galantamine is not recommended for use in patients with severe renal impairment (CrCl less than 9 ml/min)1,2,5-7 .
Patients with severe renal impairment (CrCl 5-29 ml/min) stabilized on memantine
5 mg twice daily immediate-release or 14 mg daily extended-release and donepezil
10 mg daily or donepezil 10 mg once daily without memantine may utilize memantine/donepezil combination therapy in doses not exceeding 14 mg/10 mg daily1,2,10.
1.2. Pediatrics
ACIs and memantine/donepezil combination therapy are not recommended for use in children, as adequate, well-controlled clinical trials have not documented safety and efficacy of these agents for any disease state in the pediatric population1-10.
2. Duration of Therapy
ACIs do not alter the long-term progressive decline of Alzheimer’s disease, but have been shown to delay time to institutionalization, which may be cost-effective. ACIs may be prescribed to stabilize dementia in Alzheimer’s patients, as determined by periodic assessment of functional and cognitive ability. ACIs should be discontinued when dementia becomes unresponsive to therapy and progressively severe, as the efficacy of these agents diminishes due to loss of intact cholinergic neurons.
3. Duplicative Therapy
Combined use of two or more ACIs does not provide enhanced therapeutic benefit and may result in additive adverse effects. Concurrent administration of two or more ACIs is not recommended and will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for ACIs are summarized in Table 3. Only those drug-drug interactions classified as clinical significance level 1 or those considered life threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendations | Clinical Significance |
---|---|---|---|---|
ACIs | anticholinergics | potential for reduced cholinergic activity with centrally acting anticholinergics; may manifest as reduced activities of daily living but not cognitive function; peripherally acting anticholinergics less likely to attenuate ACI therapeutic effects |
monitor for diminished cholinergic effects; choose agents with less centrally acting anticholinergic activity |
moderate (CP) |
ACIs | cholinergic agents and other cholinesterase inhibitors | enhanced cholinergic/ adverse effects | avoid combination, if possible; if combination needed, monitor for enhanced cholinergic effects; may adjust doses to achieve tolerable clinical effects | major (CP) |
ACIs | NSAIDs | potential for additive gastrointestinal effects | monitor for gastrointestinal intolerance and/or bleeding | moderate (CP) |
ACIs | beta blockers | increased risk of bradycardia when prescribed concurrently; ACIs may increase vagal tone, resulting in bradycardia, hypotension, and syncope | monitor blood pressure, heart rate during therapy | moderate (CP) |
donepezil | QT interval-prolonging medications | adjunctive use may increase risk of QT interval prolongation and torsades de pointes as donepezil has increased risk of QT interval prolongation and torsades de pointes | avoid combined use; if used together, monitor patients for efficacy and cardiovascular adverse outcomes | severe (CP) |
donepezil, galantamine | CYP3A4 and CYP2D6 inducers | potential for reduced donepezil serum concentrations and decreased efficacy | monitor for reduced donepezil efficacy | moderate (CP) |
donepezil, galantamine | CYP3A4 and CYP2D6 inhibitors | potential for increased donepezil and galantamine serum concentrations | monitor for increased cholinergic effects | galantamine: major; donepezil, galantamine: moderate (CP) |
donepezil/ memantine | alkalinizing agents (e.g., select carbonic anhydrase inhibitors, sodium bicarbonate) | memantine clearance reduced by about 80% in alkaline conditions (pH > 8); adjunctive administration with alkalinizing agents may decrease memantine elimination and increase memantine serum levels and potential for increased pharmacologic/ adverse effects | administer drug combination cautiously together; monitor patients for increased pharmacologic/ adverse effects | moderate (CP) |
donepezil/ memantine | other drugs excreted by renal tubular secretion (e.g., amiloride, cimetidine, dofetilide, nicotine, quinidine, ranitidine) | memantine eliminated by renal tubular cationic transport; combined administration may result in altered serum levels of both memantine and other drugs excreted by renal tubular secretion due to competition for transport system; elevated dofetilide levels may increase potential for arrhythmias, including torsades de pointes | monitor patient responses, observe for adverse effects or loss of efficacy, and adjust doses as necessary | dofetilide, procainamide, quinidine: major; all other drugs: moderate (CP) |
rivastigmine | metoclopramide | combined use may increase risk of extrapyramidal effects as both agents associated with extrapyramidal signs/ symptoms | avoid concurrent use; monitor closely for extrapyramidal effects if combined therapy necessary | major (CP) |
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: June 2, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed June 2, 2023.
- Donepezil hydrochloride transdermal patch (Adlarity®) package insert. Corium, LLC. March 2022.
- Donepezil tablets, orally disintegrating tablets (Aricept®, Aricept® ODT) Package Insert. Eisai Inc., November 2022.
- Galantamine extended-release capsules package insert. Aurobindo Pharma Limited. November 2022.
- Galantamine film coated oral tablet package insert. Aurobindo Pharma Limited. August 2021.
- Galantamine hydrobromide oral solution package insert. Hikma Pharmaceuticals USA, Inc. March 2022.
- Rivastigmine transdermal system (Exelon® Patch) package insert. Novartis, December 2020.
- Rivastigmine tartrate oral capsules package insert. Alembic Pharmaceuticals, Inc. April 2022.
- Memantine extended-release/donepezil capsules (Namzaric®) package insert. Allergan USA, Inc., January 2019.
- Battle CE, Abdul-Rahim AH, Shenkin SD, et al. Cholinesterase inhibitors for vascular dementia and other vascular cognitive impairments: a network meta-analysis. Cochrane Database Syst Rev. 2021 Feb 22;2(2):CD013306.
- Hershey LA, Coleman-Jackson R. Pharmacological management of dementia with lewy bodies. Drugs Aging. 2019;36(4):309-319.
- Kim JO, Lee SJ, Pyo JS. Effect of acetylcholinesterase inhibitors on post-stroke cognitive impairment and vascular dementia: A meta-analysis. PLoS One. 2020 Feb 7;15(2):e0227820.
- Cotter J, Muhlert N, Talwar A, et. al. Examining the effectiveness of acetylcholinesterase inhibitors and stimulant-based medications for cognitive dysfunction in multiple sclerosis: A systematic review and meta-analysis. Neuroscience & Biobehavioral Reviews. 2018;86:99-107.
Aerosolized Agents - metered-dose inhalers: anti-cholinergic drugs
Aerosolized Agents - metered-dose inhalers: anti-cholinergic drugs - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Revised April 23, 2021
- March 2019
- March 2017
- Nov. 2015
- March 2014
- Aug. 2012
- June 2012
- Oct. 2010
- Jan. 2008
- Jan. 2003
- Jan. 2002
- Jan. 2001
- March 2000
- Jan. 2000
- Feb. 1999
- Feb. 1998
- Feb. 1997
- Aug. 1995.
- Initially developed
- January 1995
1. Dosage
1.1. Adults
Ipratropium (Atrovent), a short-acting, inhalational anticholinergic agent, is FDA-approved to manage bronchospasm associated with chronic bronchitis and emphysema, collectively known as chronic obstructive pulmonary disease (COPD). Ipratropium is considered a second-line agent in the treatment of asthma as the bronchodilatory effects seen with ipratropium are less than those seen with beta-adrenergic drugs. While not FDA approved, the Expert Panel 3 guidelines from the National Heart Lung and Blood Institute document benefit when multiple ipratropium doses are administered adjunctively with beta2-agonists in the emergency department to manage more severe acute asthma exacerbations, and the Global Initiative for Asthma (GINA) guidelines state that ipratropium may be considered an alternative bronchodilator in patients who experience adverse effects to short-acting beta2-agonists (e.g., nausea, tachycardia, arrhythmia, tremor). Additionally, ipratropium may be administered in conjunction with short-acting beta agonists, corticosteroids, or oxygen in patients with acute, life-threatening asthma exacerbations awaiting transfer to an acute care center. The “2020 Focused Updates to the Asthma Management Guidelines” do not address the use of short acting muscarinic antagonist agents. Ipratropium is available as a metered-dose, inhalation aerosol solution and is FDA-approved for use in adult COPD patients receiving an aerosol bronchodilator who continue to have bronchospasm and require a second bronchodilator.
Tiotropium (Spiriva) is a long-acting, inhalational anticholinergic agent FDA-approved for long-term use in managing bronchospasm associated with COPD and reducing COPD exacerbations, as well as maintenance therapy for asthma. GINA guidelines state that tiotropium is recommended as Step 4 and 5 add-on therapy in adults, adolescents, and children 6 years of age or older with asthma and a history of exacerbations. Tiotropium is available as a dry inhalation powder in capsule form or aerosol solution for oral inhalation. Due to the compound’s extended duration of action, tiotropium is approved for only once daily administration.
Aclidinium (Tudorza Pressair), is FDA-approved as long-term maintenance therapy for bronchospasm associated with COPD, is available as a breath-actuated dry powder inhaler and is dosed twice daily. Umeclidinium (Incruse Ellipta), another breath-actuated inhalation powder, is also approved for long-term COPD maintenance treatment.
Ipratropium is also available in combination with albuterol as Combivent Respimat, which is FDA- approved for use in adult COPD patients receiving an aerosol bronchodilator who continue to have bronchospasm and require a second bronchodilator. This propellant-free product provides a slow-moving mist to supply the active ingredients and has replaced the metered-dose inhaler which used chlorofluorocarbons to deliver medication (i.e., Combivent). Combivent Respimat requires only one actuation per dose compared to the older Combivent product, which required two actuations per dose.
Combination therapy including umeclidinium (inhaled anticholinergic) plus the long-acting beta-2 agonist (LABA), vilanterol, marketed as Anoro Ellipta, is FDA-approved for use in adults with COPD as maintenance therapy. This product is the first dual therapy bronchodilator available for once daily use. Three additional anticholinergic/LABA combination products, tiotropium/olodaterol (Stiolto Respimat), glycopyrrolate/formoterol (Bevespi Aerosphere), and aclidinium bromide/ formoterol (Duaklir Pressair) are also FDA approved for COPD maintenance therapy.
Triple therapy with fluticasone (inhaled corticosteroid), umeclidinium (inhaled anticholinergic), and vilanterol (inhaled LABA), marketed as Trelegy Ellipta, is the most recent inhaled anticholinergic combination therapy FDA-approved for use to manage COPD in adults who continue to have bronchospasm while treated with a bronchodilator and require a second bronchodilator. In September of 2020 it was approved for the maintenance treatment of asthma in patients 18 years of age and older.
Recommended doses for anticholinergic MDI monotherapy and combination products are summarized in Tables 1 and 2, respectively. Dosages exceeding the approved recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
aclidinium (Tudorza Pressair®) | dry powder inhaler (400 mcg/actuation) | chronic obstructive pulmonary disease (COPD) | 2 actuations/day (total dose = 800 mcg) |
ipratropium bromide HFA (Atrovent HFA®) | aerosol (17 mcg/actuation) | COPD | 12 actuations/day in divided doses (total dose = 204 mcg) |
tiotropium (Spiriva HandiHaler®) | inhalation capsule (18 mcg/capsule) | COPD | 2 inhalations of one capsule powder contents once daily (total dose = 18 mcg) |
tiotropium (Spiriva Respimat®) | inhalation cartridge (1.25 mcg/ actuation) | Asthma | 2 inhalations of 1.25 mcg/actuation once daily (total dose = 2.5 mcg) |
inhalation cartridge (2.5 mcg/ actuation) | COPD | 2 inhalations of 2.5 mcg/actuation once daily (total dose = 5 mcg) | |
umeclidinium (Incruse Ellipta®) | dry powder inhaler (62.5 mcg/actuation) | COPD | 1 actuation/day (total dose = 62.5 mcg) |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
aclidinium bromide/ formoterol fumarate (Duaklir Pressair) | inhalation powder: 400 mcg/ 12 mcg/ inhalation | COPD | 2 actuations/day (1 actuation twice daily); total dose = 800 mcg/24 mcg/day |
budesonide, glycopyrrolate, formoterol fumarate (Breztri Aerosphere) | inhalation powder: 100 mcg/ 62.5 mcg/ 25 mcg/ inhalation | Asthma | 1 inhalation/day (total dose = 100 mcg/62.5 mcg/ 25 mcg) |
COPD | 1 inhalation/day (total dose = 100 mcg/62.5 mcg/ 25 mcg) | ||
inhalation powder: 200 mcg/ 62.5 mcg/ 25 mcg/ inhalation | Asthma | 1 actuation/day; total dose = 200 mcg/62.5 mcg/ 25 mcg/day | |
glycopyrrolate/ formoterol (Bevespi Aerosphere®) | aerosol (9 mcg/4.8 mcg/actuation) | COPD | 4 actuations/day in two divided doses (total dose = 36 mcg/19.2 mcg) |
ipratropium/ albuterol (Combivent Respimat®) | aerosol solution (20 mcg ipratropium/100 mcg albuterol base/actuation) | COPD | 6 actuations/day in divided doses (no more than 6 inhalations/day) (total dose = 120 mcg ipratropium/600 mcg albuterol base) |
tiotropium/ olodaterol (Stiolto Respimat®) | aerosol solution (2.5 mcg/2.5 mcg/ actuation) | COPD | 2 inhalations once daily (total dose = 5 mcg/5 mcg) |
umeclidinium/ vilanterol (Anoro Ellipta®) | inhalation powder (62.5 mcg/25 mcg/actuation) | COPD | 1 actuation/day (total dose = 62.5 mcg/25 mcg) |
1.2. Pediatrics
Tiotropium is FDA-approved for asthma maintenance therapy in pediatric patients 6-17 years of age. Safety and efficacy of inhaled aclidinium, ipratropium, umeclidinium, and glycopyrrolate in children have not been established, as COPD does not usually develop in the pediatric population. Maximum recommended inhaled anticholinergic pediatric dosages are summarized in Table 3. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Patient Age/Maximum Recommended Dosage |
---|---|---|---|
tiotropium (Spiriva® Respimat®) | inhalation cartridge (1.25 mcg/ actuation) | Asthma | 6-17 years of age: 2 inhalations of 1.25 mcg/ actuation once daily (total dose = 2.5 mcg) |
2. Duration of Therapy
Inhalational anticholinergic agents are suitable for chronic administration as side effects are minimal and drug effectiveness is maintained over years of regular, continuous use. Since inhalation anticholinergics are indicated in the management of chronic, lifelong diseases, there is no basis for limiting the duration of therapy. However, days’ supply for each MDI anticholinergic canister is limited based on the number of inhalations per canister as well as the maximum recommended dose per day. Days’ supply for inhalational anticholinergic therapy is summarized in Tables 4 and 5, based on the maximum recommended dose and the number of actuations per canister or number of capsules per blister card listed in Tables 1-3. Excessive use may be identified based on refill frequency. Inappropriate supply of inhaled anticholinergic agents will be monitored by reviewing excessive refills.
Drug | Number of Actuations Per Canister | Days’ Supply (based on maximum dose per day)+ |
---|---|---|
aclidinium 400 mcg/ actuation |
30 60 |
15 30 |
ipratropium bromide HFA (12.9 g inhaler) | 200 | ~16-17 |
tiotropium inhalation capsules (5 capsules, 30 capsules, 90 capsules) | 5 to 90 (based on capsule number prescribed) | 5 to 90 (based on number of capsules prescribed) |
tiotropium inhalation spray 1.25 mg/actuation | 60 | 30 |
tiotropium inhalation spray 2.5 mcg/actuation | 28 60 |
14 30 |
umeclidinium inhalation powder box of 30 foil blister powder strips |
30 | 30 |
Legend:
- + calculated based on canister size/blister package size and maximum dose allowed per day
Drug | Number of Actuations Per Canister | Days’ Supply (based on maximum dose per day)+ |
---|---|---|
aclidinium bromide/ formoterol fumarate inhalation 400 mcg/12 mcg/inhalation |
60 | 30 |
budesonide/ glycopyrrolate/ formoterol fumarate 160 mcg/ 9 mcg/ 4.8 mcg/ actuation |
120 | 30 |
fluticasone furoate/ umeclidinium/ vilanterol inhalation powder~ 100 mcg/62.5 mcg/25 mcg/actuation 28 blisters (one strip contains fluticasone, one strip contains umeclidinium and vilanterol) 60 blisters (one strip contains fluticasone, one strip contains umeclidinium and vilanterol) |
14 30 |
14 30 |
fluticasone furoate/ umeclidinium/ vilanterol inhalation powder~ 200 mcg/62.5 mcg/25 mcg/actuation 28 blisters (one strip contains fluticasone, one strip contains umeclidinium and vilanterol) 60 blisters (one strip contains fluticasone, one strip contains umeclidinium and vilanterol) |
14 30 |
14 30 |
glycopyrrolate/formoterol aerosol inhalation (10.7 g inhaler) |
28 120 |
7 30 |
ipratropium/albuterol spray (4 g cartridge) | 120 | 20 |
tiotropium/olodaterol spray (4 g cartridge) | 60 | 30 |
umeclidinium/vilanterol inhalation powder~ 14 blisters (one strip contains umeclidinium, one strip contains vilanterol) 60 blisters (one strip contains umeclidinium, one strip contains vilanterol) |
70 30 |
70 30 |
Legend:
- + calculated based on canister size/blister package size and maximum dose allowed per day
- ~ not indicated for use in children
3. Duplicative Therapy
Concurrent administration of inhaled anticholinergics has not been evaluated in controlled studies and may not offer additional clinical benefit but may increase anticholinergic adverse effects. Combined administration of multiple inhaled anticholinergics is not recommended and will be reviewed.
Although inhaled anticholinergic systemic absorption is minimal, adjunctive administration with other anticholinergic medications has the potential to amplify anticholinergic pharmacologic and adverse effects. Combined therapy with inhaled anticholinergics and other anticholinergic dosage forms should be considered cautiously.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug interactions considered clinically relevant for inhaled anticholinergics with beta agonists are summarized in Table 6. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
fluticasone/umeclidinium/vilanterol | strong CYP3A4 inhibitors (e.g., azole antifungals, erythromycin, clarithromycin, protease inhibitors) | potential for increased steroid concentrations with risk for excessive adrenal suppression and Cushing syndrome development | concurrent administration not advised; if combined administration necessary, give cautiously; monitor patients for signs/ symptoms of corticosteroid excess | major (CP) |
ipratropium/albuterol, umeclidinium/vilanterol, glycopyrrolate/formoterol, tiotropium/olodaterol | MAOIs* (including linezolid) | concurrent administration of MAOIs with beta2-agonists may increase risk of development of tachycardia, hypomania, or agitation due to potentiation of effects on vascular system | administer combination cautiously or within 2 weeks of MAOI discontinuation; observe patients for adverse effects | major (DrugReax) - 1-severe (CP) |
ipratropium/albuterol, umeclidinium/vilanterol, glycopyrrolate/formoterol, tiotropium/olodaterol | beta blockers | concurrent administration may decrease effectiveness of beta-adrenergic blocker or beta2- agonists like albuterol | combination not recommended in asthma/COPD patients; if adjunctive therapy necessary, utilize cardioselective beta blocker (e.g., atenolol, bisoprolol) | major (CP) |
ipratropium/albuterol, umeclidinium/vilanterol, glycopyrrolate/formoterol, tiotropium/olodaterol | diuretics | potential for worsening of diuretic associated hypokalemia and/or ECG changes with beta-agonist concurrent administration, especially with high beta-agonist doses | administer combination cautiously; monitoring potassium levels may be necessary | moderate (CP) |
steroids | quinolones | increased potential for serious tendonitis, tendon rupture with concurrent therapy | closely monitor patients requiring combination therapy; discontinue quinolone if tendon pain develops | moderate (CP) |
systemic steroids | bupropion | potential increased seizure risk due to systemic steroid-induced lowering of seizure threshold | utilize only recommended bupropion dosages; initiate bupropion therapy with low doses and titrate slowly when combination therapy warranted; closely monitor patients for seizure development | moderate (CP) |
umeclidinium/vilanterol | strong CYP3A4 inhibitors (e.g., fluconazole, ketoconazole, ritonavir, nefazodone) | adjunctive administration may result in elevated vilanterol serum levels and enhanced pharmacologic and adverse effects, including QT interval prolongation, as vilanterol is a CYP3A4 substrate | administer combination cautiously, and closely monitor patients for adverse cardiovascular/QT interval outcomes | moderate (CP) |
Legend:
- + CP = Clinical Pharmacology
- *MAOIs = monoamine oxidase inhibitors
- ^TCAs = tricyclic antidepressant
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: February 17, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2021. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed February 17, 2023.
- Ipratropium bromide HFA inhalation aerosol (Atrovent® HFA) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., January 2021.
- National Heart, Lung, and Blood Institute. National Asthma Education and Prevention Program. Expert Panel Report 3: Guidelines for the Diagnosis and Management of Asthma. Full Report 2007. (NIH Publication No. 07-4051). Available at: http://www.nhlbi.nih.gov/guidelines/asthma/asthgdln.pdf. Accessed February 17, 2023.
- Global Initiative for Asthma. Global Strategy for Asthma Management and Prevention, 2022. Available from: https://ginasthma.org/gina-reports/. Accessed February 17, 2023.
- National Heart, Lung, and Blood Institute. 2020 focused updates to the asthma management guidelines: a report from the national asthma education and prevention program coordinating committee expert panel working group. National Institutes of Health. December 2020. Accessed February 17, 2023.
- Global Initiative for Chronic Obstructive Lung Disease. Global strategy for the diagnosis, management, and prevention of chronic obstructive lung disease. 2023 report. Available at: https://goldcopd.org/2023-gold-report-2/. Accessed February 2023.
- Tiotropium inhalation powder (Spiriva® HandiHaler®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., January 2022.
- Tiotropium inhalation spray (Spiriva® Respimat®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., January 2022.
- Aclidinium inhalation powder (Tudorza® Pressair®) package insert. AstraZeneca, February 2021.
- Umeclidinium inhalation powder (Incruse® Ellipta®) package insert. GlaxoSmithKline, August 2020.
- Ipratropium/albuterol inhalation spray (Combivent® Respimat®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., January 2022.
- Umeclidinium/vilanterol inhalation powder (Anoro® Ellipta®) package insert. GlaxoSmithKline, October 2022.
- Aclidinium/ formoterol fumarate powder (Duaklir Pressair®) metered dose inhaler package insert. Circassia Pharmaceuticals, Inc., January 2022.
- Tiotropium/olodaterol inhalation spray (Stiolto® Respimat®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., January 2022.
- Glycopyrrolate/formoterol inhalation aerosol (Bevespi Aerosphere®) package insert. AstraZeneca, November 2020.
- Fluticasone/umeclidinium/vilanterol inhalation powder (Trelegy® Ellipta®) package insert. GlaxoSmithKline, December 2022.
- Budesonide/ glycopyrrolate, formoterol fumarate inhalation spray (Breztri Aerosphere®) package insert. AstraZeneca Pharmaceuticals, LP. January 2022.
Aerosolized Agents - metered-dose inhalers: anti-inflammatory drugs
Aerosolized Agents - metered-dose inhalers: anti-inflammatory drugs - Index
Medications listed in the tables and non-FDA approved indications that may be included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 28, 2023
- April 23, 2021
- March 2019
- March 2017
- Nov. 2015
- March 2014
- Aug. 2012
- June 2012
- Aug. 2010
- July 2010
- July 2007
- Feb. 2003
- Jan 2002
- Jan. 2001
- March 2000
- Jan. 2000
- Feb. 1999
- March 1998
- Aug. 1997
- Feb. 1997
- Initially developed
- Jan. 1995
1. Dosage
Because asthma is comprised of both inflammatory and bronchoconstrictive components, asthma treatment plans include routine use of inhaled corticosteroids (ICS) to manage inflammatory processes in asthma patients requiring chronic treatment. Higher ICS doses may contribute to a decrease in linear growth velocity in children, but adult height does not appear to be significantly inhibited following ICS use in childhood. All ICS doses may contribute to decreased bone formation in children and bone mineral density in adults. Close monitoring of growth and bone formation markers in children and fracture risk in adults is warranted with long-term ICS use. The lowest effective ICS dose should be utilized for the shortest required time period.
1.1. Adults
Maximum recommended adult orally inhaled doses for available aerosolized corticosteroids as individual agents are summarized in Table 1. Prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|
beclomethasone dipropionate HFA (QVAR Redihaler) | inhalation aerosol: 40 mcg/actuation | 16 actuations/day in divided doses (8 actuations twice daily); total dose = 640 mcg/day |
inhalation aerosol: 80 mcg/actuation | 8 actuations/day in divided doses (4 actuations twice daily); total dose = 640 mcg/day | |
budesonide (Pulmicort Flexhaler) | inhalation powder: 90 mcg/actuation | 16 actuations/day in divided doses (8 actuations twice daily); total dose = 1440 mcg/day |
inhalation powder: 180 mcg/actuation | 8 actuations/day in divided doses (4 actuations twice daily); total dose = 1440 mcg/day | |
ciclesonide (Alvesco) | inhalation aerosol: 80 mcg/actuation | prior therapy with bronchodilators alone: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 320 mcg/day |
prior therapy with ICS, oral corticosteroids: 8 (4 actuations twice daily); total dose = 640 mcg/day | ||
inhalation aerosol: 160 mcg/actuation | prior therapy with bronchodilators alone: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 320 mcg/day | |
prior therapy with ICS, oral corticosteroids: 160 mcg/actuation: 4 (2 actuations twice daily); total dose = 640 mcg/day | ||
fluticasone furoate (Arnuity Ellipta) | dry powder inhaler: 100 mcg/actuation | 1 actuation once daily; total dose = 100 mcg/day* |
dry powder inhaler: 200 mcg/actuation | 1 actuation once daily; total dose = 200 mcg/day* | |
fluticasone propionate HFA (Flovent HFA) | inhalation aerosol: 44 mcg/actuation | no previous ICS: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 176 mcg/day |
inhalation aerosol: 110 mcg/actuation |
prior therapy with bronchodilators alone, ICS: 16 actuations/day in divided doses (8 actuations twice daily); total dose = 1760 mcg/day |
|
inhalation aerosol: 220 mcg/actuation | prior therapy with bronchodilators alone, ICS: 8 actuations/day in divided doses (4 actuations twice daily); total dose = 1760 mcg/day | |
prior therapy with oral corticosteroids: 8 (4 actuations twice daily); total dose = 1760 mcg/day | ||
fluticasone propionate (Flovent Diskus) | inhalation powder: 100 mcg/actuation | total dose = 2000 mcg/day |
inhalation powder: 250 mcg/actuation | 8 actuations/day in divided doses (4 actuations twice daily); total dose = 2000 mcg/day | |
fluticasone propionate (ArmonAir Digihaler) | inhalation powder: 55 mcg/actuation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg |
inhalation powder: 113 mcg/actuation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg | |
inhalation powder: 232 mcg/actuation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg | |
mometasone HFA (Asmanex HFA) | inhalation aerosol: 100 mcg/actuation | prior therapy with medium-dose ICS: 4 actuations/day (2 actuations twice daily); total dose = 400 mcg/day |
inhalation aerosol: 200 mcg/actuation |
prior therapy high-dose ICS, oral corticosteroids: 4 actuations/day (2 actuations twice daily); total dose = 800 mcg/day ^ |
|
mometasone (Asmanex Twisthaler) | inhalation powder: 110 mcg/actuation | prior therapy with bronchodilators alone, ICS: 4 actuations/day (4 actuations once daily in evening or 2 actuations twice daily); total dose = 440 mcg/day |
prior therapy with oral corticosteroids: 8 actuations/day in divided doses (4 actuations twice daily); total dose = 880 mcg/day | ||
inhalation powder: 220 mcg/actuation | prior therapy with bronchodilators alone, ICS: 2 actuations/day (2 actuations once daily in evening or 1 actuation twice daily); total dose = 440 mcg/day | |
prior therapy with oral corticosteroids: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 880 mcg/day |
Legend:
- * initial fluticasone furoate dose in patients not on ICS is 100 mcg once/day; if 100 mcg not effective, dose should be increased to 200 mcg once/day
- ^ prednisone should be tapered slowly, beginning at least one week after mometasone use
ICS combined with LABAs are FDA-approved for use in adults and children as asthma maintenance therapy: fluticasone propionate/salmeterol metered aerosol (Advair HFA) is approved for patients 12 years of age and older, mometasone/formoterol inhalation aerosol (Dulera) is FDA-approved for use as maintenance therapy for asthma in patients 5 years of age and older, and fluticasone propionate/salmeterol inhalation powder (Advair Diskus) is FDA-approved for use in asthma maintenance in patients 4 years of age and older1,2,12-14. Advair Diskus is also FDA-approved for use in adults as COPD maintenance therapy.1,2.14 Fluticasone/salmeterol inhalation powder (AirDuo RespiClick) is approved for use in patients with asthma who are 12 years of age and older1,2,15. Budesonide/formoterol inhalation aerosol (Symbicort) is approved for the treatment of asthma in patients 6 years of age and older and in adults as COPT maintenance therapy1,2,16. Fluticasone/vilanterol (Breo Ellipta), is indicated for use in adults as maintenance therapy for COPD and maintenance therapy for asthma1,2,17. Additionally, a triple therapy inhaler containing fluticasone, umeclidinium and vilanterol (Trelegy Ellipta) is approved for COPD and asthma management.1,2,18 Advair Diskus 250 mcg/50 mcg is the only fluticasone/salmeterol dose approved for use in adult patients with COPD, while budesonide/formoterol (Symbicort) 160 mcg/4.5 mcg is the only recommended strength for COPD1,2,14,16.
The maximum recommended orally inhaled doses for available aerosolized corticosteroids as combination therapy is summarized in Table 2. Prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
budesonide/ formoterol (Symbicort, generics) | inhalation aerosol: 80 mcg/4.5 mcg/ actuation | Asthma | 4 actuations/day (2 actuations twice daily); total dose = 320 mcg/18 mcg/day |
inhalation aerosol: 160 mcg/4.5 mcg/ actuation | Asthma | 4 actuations/day (2 actuations twice daily); total dose = 640 mcg/18 mcg/day | |
Chronic obstructive pulmonary disease (COPD) | 4 actuations/day (2 actuations twice daily); total dose = 640 mcg/18 mcg/day | ||
budesonide/glycopyrrolate/formoterol fumarate (Breztri Aerosphere) | inhalation aerosol: 160 mcg/9 mcg/4.8 mcg/inhalation | COPD | 4 actuations/day (2 actuations twice daily); total dose = 640 mcg/ 36 mcg/ 19.2 mcg/ day |
fluticasone propionate/salmeterol xinafoate (Advair HFA, generics) | inhalation aerosol: 45 mcg fluticasone/21 mcg salmeterol/actuation | Asthma | 4 actuations/day (2 actuations twice daily); total dose = 180 mcg/84 mcg/day |
inhalation aerosol: 115 mcg fluticasone/21 mcg salmeterol/actuation | 4 actuations/day (2 actuations twice daily); total dose = 460 mcg/84 mcg/day | ||
inhalation aerosol: 230 mcg fluticasone/21 mcg salmeterol/actuation | 4 actuations/day (2 actuations twice daily); total dose = 920 mcg/84 mcg/day | ||
fluticasone propionate/salmeterol (Advair Diskus, Wixela Inhub, generics) | inhalation powder: 100 mcg fluticasone/50 mcg salmeterol/actuation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 200 mcg/100 mcg/day |
inhalation powder: 250 mcg fluticasone/50 mcg salmeterol/ actuation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 500 mcg/100 mcg/day | |
COPD | 2 actuations/day in divided doses (1 actuation twice daily); total dose =500 mcg/100 mcg/day | ||
inhalation powder: 500 mcg fluticasone/50 mcg salmeterol/ actuation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 1000 mcg/100 mcg/day | |
fluticasone propionate/salmeterol (AirDuo RespiClick) | inhalation powder: 55 mcg fluticasone/14 mcg salmeterol/ actuation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg/28 mcg/day |
inhalation powder: 113 mcg fluticasone/14 mcg salmeterol/ actuation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg/28 mcg/day | ||
inhalation powder: 232 mcg fluticasone/14 mcg salmeterol/ actuation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg/28 mcg/day | ||
fluticasone propionate/salmeterol (AirDuo Digihaler) | inhalation powder: 55 mcg fluticasone/ 14 mcg salmeterol/ inhalation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg/28 mcg/day |
inhalation powder: 113 mcg fluticasone/ 14 mcg salmeterol/ inhalation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg/28 mcg/day | ||
inhalation powder: 232 mcg fluticasone/ 14 mcg salmeterol/ inhalation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg/28 mcg/day | ||
fluticasone furoate/umeclidinium/vilanterol (Trelegy Ellipta) | inhalation powder: 100 mcg/ 62.5 mcg/ 25 mcg/inhalation | Asthma | 1 actuation/day; total dose = 100 mcg/62.5 mcg/ 25 mcg/day |
COPD | 1 actuation/day; total dose = 100 mcg/62.5 mcg/ 25 mcg/day | ||
inhalation powder: 200 mcg/ 62.5 mcg/ 25 mcg/inhalation | Asthma | 1 actuation/day; total dose = 200 mcg/62.5 mcg/ 25 mcg/day | |
fluticasone furoate/vilanterol (Breo Ellipta, generics) | inhalation powder: 100 mcg fluticasone/25 mcg vilanterol/actuation | Asthma | 1 actuation/day; total dose = 100 mcg/25 mcg/day |
200 mcg fluticasone/25 mcg vilanterol/actuation | 1 actuation/day; total dose = 200 mcg/25 mcg/day | ||
inhalation powder: 100 mcg fluticasone/25 mcg vilanterol/ actuation | COPD | 1 actuation/day; total dose = 100 mcg/25 mcg/day | |
mometasone/formoterol (Dulera) | inhalation aerosol: 100 mcg mometasone/5 mcg formoterol/actuation | Asthma | patients on medium-dose inhaled corticosteroids: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 400 mcg/20 mcg/day |
inhalation aerosol: 200 mcg mometasone/5 mcg formoterol/actuation | patients on high-dose inhaled corticosteroids: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 800 mcg/20 mcg/day |
Legend:
- Number of maximum actuations per day based on dose of salmeterol and formoterol, and independent of inhaled corticosteroid dose
1.2. Pediatrics
ICS as individual agents are FDA-approved for use in pediatric asthma management in children as young as 4 years of age. Pediatric therapy initiation differs by age for individual agents and is summarized in Table 3. Prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Patient Age/Maximum Recommended Dosage |
---|---|---|
beclomethasone dipropionate HFA (QVAR Redihaler) | inhalation aerosol: 40 mcg/actuation |
|
inhalation aerosol: 80 mcg/actuation |
|
|
budesonide (Pulmicort Flexhaler) | inhalation powder: 90 mcg/actuation |
|
inhalation powder: 180 mcg/actuation |
|
|
ciclesonide (Alvesco) | inhalation aerosol: 80 mcg/actuation |
|
inhalation aerosol: 160 mcg/actuation |
|
|
fluticasone furoate (Arnuity Ellipta) | dry powder inhaler: 50 mcg/actuation |
|
dry powder inhaler: 100 mcg/actuation |
|
|
dry powder inhaler: 200 mcg/actuation |
|
|
fluticasone propionate HFA (Flovent HFA, generics) | inhalation aerosol: 44 mcg/actuation |
|
inhalation aerosol: 110 mcg/actuation |
|
|
inhalation aerosol: 220 mcg/actuation |
|
|
fluticasone propionate (Flovent Diskus) | dry powder inhaler: 50 mcg/actuation |
|
dry powder inhaler: 100 mcg/actuation |
|
|
dry powder inhaler: 250 mcg/actuation |
|
|
fluticasone propionate (ArmonAir Digihaler) | dry powder inhaler: 55 mcg/actuation |
|
dry powder inhaler: 113 mcg/actuation |
|
|
dry powder inhaler: 232 mcg/actuation |
|
|
mometasone HFA (Asmanex HFA) | inhalation aerosol: 50 mcg/actuation |
|
inhalation aerosol: 100 mcg/actuation |
|
|
inhalation aerosol: 200 mcg/actuation |
|
|
mometasone (Asmanex Twisthaler) | inhalation powder: 110 mcg/actuation |
|
inhalation powder: 220 mcg/actuation |
|
Legend:
- * initial fluticasone furoate dose in patients not on ICS is 100 mcg once/day; if 100 mcg not effective, dose should be increased to 200 mcg once daily
- ^ prednisone should be tapered slowly, beginning at least one week after mometasone use
Combined therapy with aerosolized inhaled ICS and long-acting beta2-agonists is only FDA-approved for use in asthma treatment in children greater than or equal to 5 years of age; combined ICS/ long-acting beta2-agonist therapy as inhalation powder is FDA-approved for use in asthma management in children 4 years of age and older. Maximum recommended orally inhaled doses for available aerosolized corticosteroids as combination therapy are summarized in Table 4. Prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Patient Age/Maximum Recommended Dosage |
---|---|---|
budesonide/ formoterol (Symbicort) | inhalation aerosol: 80 mcg/4.5 mcg/ actuation | 6 to 11 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 320 mcg/18 mcg/day |
12-17 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 320 mcg/18 mcg/day | ||
inhalation aerosol: 160 mcg/4.5 mcg/actuation | 12-17 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 640 mcg/18 mcg /day | |
fluticasone propionate/ salmeterol xinafoate (Advair HFA, generics) | inhalation aerosol: 45 mcg/21 mcg/ actuation | 12-17 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 180 mcg/84 mcg/day |
inhalation aerosol: 115 mcg/21 mcg/ actuation | 12-17 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 460 mcg/84 mcg/day | |
inhalation aerosol: 230 mcg/21 mcg/ actuation | 12-17 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 920 mcg /84 mcg/day | |
fluticasone propionate/salmeterol (Advair Diskus, generics) | inhalation powder: 100 mcg/50 mcg/ actuation | 4-11 years of age: 2 actuations/day (1 actuation twice daily); total dose = 200 mcg/100 mcg/day |
inhalation powder: 100 mcg/50 mcg/actuation | 12-17 years of age: 2 actuations/day (1 actuation twice daily); total dose = 200 mcg/100 mcg/day | |
inhalation powder: 250 mcg/50 mcg/actuation | 12-17 years of age: 2 actuations/day (1 actuation twice daily); total dose = 500 mcg/100 mcg/day | |
inhalation powder: 500 mcg/50 mcg/actuation | 12-17 years of age: 2 actuations/day (1 actuation twice daily); total dose = 1000 mcg/100 mcg/day | |
fluticasone propionate/salmeterol (AirDuo RespiClick) | inhalation powder: 55 mcg fluticasone/14 mcg salmeterol/ actuation | 12-17 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg/28 mcg/day |
113 mcg fluticasone/14 mcg salmeterol/actuation | 12-17 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg/28 mcg/day | |
232 mcg fluticasone/14 mcg salmeterol/actuation | 12-17 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg/28 mcg/day | |
fluticasone propionate/salmeterol (AirDuo Digihaler) | 55 mcg fluticasone/ 14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg/28 mcg/day |
inhalation powder: 113 mcg fluticasone/14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg/28 mcg/day | |
inhalation powder: 232 mcg fluticasone/14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg/28 mcg/day | |
mometasone/formoterol (Dulera) | inhalation aerosol: 50 mcg/5 mcg/ actuation | 5-11 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 200 mcg/ 20 mcg/ day |
inhalation aerosol: 100 mcg/5 mcg/ actuation | 12-17 years of age: patients on medium-dose inhaled corticosteroids: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 400 mcg/20 mcg/day | |
200 mcg/5 mcg/actuation | 12-17 years of age: patients on high-dose inhaled corticosteroids: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 800 mcg/20 mcg/day |
Number of maximum actuations per day based on dose of salmeterol and formoterol, and independent of inhaled corticosteroid dose.
2. Duration of Therapy
ICS, both as individual agents and as combination therapy, are FDA-approved for managing chronic asthma and COPD and may be continued indefinitely, as both COPD and asthma are chronic, lifelong processes22. Additionally, current guideline recommendations include the use of combined formoterol and budesonide as maintenance and rescue therapy for most patients with asthma, including the use of this combination as needed23. However, days’ supply per canister is limited based on the number of actuations per canister combined with the maximum recommended dose per day. Recommended days’ supply for available ICS as monotherapy or combined with long-acting beta2-agonists are summarized in Tables 5 and 6. Fluticasone is available as both the furoate and propionate salts; fluticasone propionate is available as four different formulations in three dosage strengths per formulation. Each dosage strength is associated with a maximum recommended dose (cited in Tables 1 and 3) which is used in combination with the number of actuations per drug canister to calculate days’ supply. Fluticasone/salmeterol inhalation powder formulations have also been approved for asthma management (AirDuo RespiClick and AirDuo Digihaler) with three different dosage formulations available; days’ supply can be calculated using dosages provided in Tables 2 and 4. Combined therapy with fluticasone furoate and vilanterol is available as two blister strips, with fluticasone in one strip and vilanterol in the second strip; similarly, triple therapy with fluticasone furoate, umeclidinium, and vilanterol is available as two blister strips, with fluticasone in one strip and umeclidinium and vilanterol in the second strip. Excessive use of ICS may be identified based on refill frequency. Inappropriate supply of ICS will be reviewed by monitoring refill requests.
Drug Name | # of Actuations Per Canister | Days’ Supply (based on maximum dose per day)+ |
---|---|---|
beclomethasone dipropionate HFA aerosol 40 mcg/actuation (10.6 g canister) | 120 |
|
80 mcg/actuation (10.6 g canister) | 120 |
|
budesonide inhalation powder 90 mcg/actuation (165 mg canister) |
60 |
|
180 mcg/actuation (225 mg canister) | 120 |
|
ciclesonide inhalation aerosol 80 mcg/actuation (6.1 g canister) |
60 |
|
160 mcg/actuation (6.1 g canister) | 60 |
|
fluticasone furoate dry powder inhaler 50 mcg/actuation 30 blisters |
30 | 30 |
100 mcg/actuation 30 blisters |
30 | 30 |
200 mcg/actuation 30 blisters |
30 | 30 |
fluticasone propionate HFA aerosol 44 mcg/actuation (10.6 g canister) |
120 | 30 days (child) |
110 mcg/actuation (12 g canister) | 120 | 7.5 days (adults, adolescents) |
220 mcg/actuation (12 g canister) | 120 | 15 days (adults, adolescents) |
fluticasone propionate dry powder inhaler 50 mcg/actuation 60 blisters |
60 | 15 days (child) |
100 mcg/actuation 60 blisters |
60 | 30 days (child) |
250 mcg/actuation 60 blisters |
60 | 7.5 days (adults, adolescents) |
fluticasone propionate dry powder inhaler (Digihaler®) 55 mcg/actuation (0.9 g canister) |
60 | 30 days (adults, adolescents) |
113 mcg/actuation (0.9 g canister) | 60 | 30 days (adults, adolescents) |
232 mcg/actuation (0.9 g canister) | 60 | 30 days (adults, adolescents) |
mometasone inhalation aerosol 50 mcg/actuation (13 g canister) |
120 | 30 days (child) |
100 mcg/actuation (13 g canister) | 120 | 30 days (adults, adolescents) |
200 mcg/actuation (13 g canister) | 120 | 30 days (adults, adolescents) |
mometasone inhalation powder 110 mcg/actuation (135 mg canister) | 30 | 30 (child) BD alone, ICS: 7.5 days (adults, adolescents) OCS: 3.75 days (adults, adolescents) |
mometasone inhalation powder 220 mcg/actuation
|
|
|
Legend:
- + calculated based on canister size and maximum dose allowed per day (summarized in Tables 1 & 3)
- BD = bronchodilator
- ICS = inhaled corticosteroids
- OCS = oral corticosteroids
Drug | # of Actuations Per Canister | Days’ Supply (based on maximum dose per day)+ |
---|---|---|
budesonide/formoterol inhalation aerosol# 80 mcg/4.5 mcg/actuation |
120 | 30 |
160 mcg/4.5 mcg/actuation | 120 | 30 |
budesonide/ glycopyrrolate/ formoterol fumarate inhalation aerosol 160 mcg/9 mcg/4.8 mcg/inhalation | 120 | 30 |
fluticasone propionate/ salmeterol xinafoate inhalation aerosol^ 45 mcg fluticasone/21 mcg salmeterol / actuation |
120 60 |
30 15 |
115mcg fluticasone/21 mcg salmeterol/ actuation | 120 60 |
30 15 |
230 mcg fluticasone/21 mcg salmeterol/ actuation | 120 60 |
30 15 |
fluticasone propionate/salmeterol inhalation powder* 100 mcg fluticasone/50 mcg salmeterol/ actuation 60 blisters |
60 | 30 |
250 mcg fluticasone/50 mcg salmeterol/ actuation 60 blisters |
14 60 |
7 30 |
500 mcg fluticasone/50 mcg salmeterol/ actuation 60 blisters |
14 60 |
7 30 |
fluticasone/salmeterol inhalation powder 55 mcg/14 mcg/actuation |
60 | 30 |
113 mcg/14 mcg/actuation | 60 | 30 |
232 mcg/14 mcg/actuation | 60 | 30 |
fluticasone furoate/ umeclidinium/ vilanterol inhalation powder~ 100 mcg/62.5 mcg/25 mcg/actuation
|
30 |
30 |
200 mcg/62.5 mcg/25 mcg/actuation
|
14 30 |
14 30 |
fluticasone furoate/vilanterol inhalation powder $ 100 mcg/25/mcg/actuation
|
14 30 |
14 30 |
200 mcg/25 mcg/actuation
|
14 30 |
14 30 |
mometasone furoate/formoterol inhalation aerosol# 50 mcg/5 mcg/actuation |
120 | 30 |
100 mcg/5 mcg/actuation |
120 |
15 30 |
200 mcg/5 mcg/actuation |
120 |
15 30 |
Legend:
- + calculated based on canister size and maximum allowed dose per day (summarized in Tables 2 & 4)
- * Salmeterol inhalation powder, alone or in combination with fluticasone as Advair Diskus®, may be used in children greater than 4 years of age
- # Budesonide/formoterol indicated in children 6 years of age and older and mometasone/formoterol inhalation aerosols is indicated for children 5 years of age and older
- ^ Fluticasone/salmeterol inhalation aerosol only indicated for children greater than or equal to 12 years of age
- $ Fluticasone/vilanterol powder not indicated for use in children
3. Duplicative Therapy
Concurrent use of inhaled corticosteroids with systemic corticosteroids may result in augmented adverse effects, especially when high doses of inhaled corticosteroids are utilized1-11.
When using single maintenance and reliever therapy (SMART), the “2020 Focused Updates to the Asthma Management Guidelines” recommends using a single inhaled corticosteroid (ICS)/ long acting beta2-agonist combination inhaler as the preferred therapy as opposed to using a separate ICS inhaler. Additionally, the guidelines recommend intermittent use of a single ICS inhaler for patients 12 years of age and older with mild persistent asthma in certain situations when the patient is not already using ICS controller therapy24. The Global Initiative for Asthma (GINA) “Global Strategy for Asthma Management and Prevention” guidelines recommend the use of combination ICS-LABA with budesonide and formoterol as maintenance and rescue therapy for most patients23.
The concomitant use of two or more inhaled corticosteroids for the treatment of asthma is not recommended and will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug interactions considered clinically relevant for inhaled corticosteroids with or without beta agonists are summarized in Table 7. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level+ |
---|---|---|---|---|
budesonide, budesonide/salmeterol, fluticasone, fluticasone/salmeterol,fluticasone/vilanterol, mometasone, mometasone/ formoterol | strong CYP3A4 inhibitors (e.g., azole antifungals, erythromycin, clarithromycin, protease inhibitors) | potential for increased steroid concentrations with risk for excessive adrenal suppression and Cushing syndrome development | concurrent administration not recommended by Advair HFA®/Advair Diskus®, Flovent® Diskus by manufacturers; Flovent® HFA not recommended with ritonavir; for all others, adjunctively administer combination cautiously; monitor patients for signs/symptoms of corticosteroid excess | budesonide, mometasone: moderate; fluticasone: major (CP) |
steroids | quinolones | increased potential for serious tendonitis, tendon rupture with concurrent therapy | closely monitor patients requiring combination therapy; discontinue quinolone if tendon pain develops | moderate (CP) |
systemic steroids | bupropion | potential increased seizure risk due to systemic steroid-induced lowering of seizure threshold | utilize only recommended bupropion dosages; initiate bupropion therapy with low doses and titrate slowly when combination therapy warranted; closely monitor patients for seizure development | moderate (CP) |
budesonide/ formoterol, fluticasone/salmeterol, fluticasone/vilanterol, mometasone/formoterol | MAOIs* (including linezolid) | concurrent administration of MAOIs with beta agonists may increase risk of tachycardia, hypomania, or agitation due to potentiation of effects on vascular system | administer combination cautiously or within 2 weeks of MAOI discontinuation; observe patients for adverse effects | severe (CP) |
budesonide/ formoterol, fluticasone/salmeterol, fluticasone/vilanterol, mometasone/formoterol | TCAs^ | concurrent administration of TCAs with beta agonists may potentiate effects on cardiovascular system and increase risk of adverse events | cautiously administer TCAs and beta agonists together, including within 2 weeks of TCA discontinuation; monitor patients and observe for changes in blood pressure, heart rate and ECG | moderate (CP) |
budesonide/formoterol, fluticasone/salmeterol, fluticasone/vilanterol, mometasone/formoterol | beta blockers | concurrent administration may decrease effectiveness of beta-adrenergic blocker or beta-2 agonists like formoterol, salmeterol | combination not recommended in asthma/COPD patients; if adjunctive therapy necessary, utilize cardioselective beta blocker (e.g., atenolol, bisoprolol) | major (CP) |
budesonide/formoterol, fluticasone/salmeterol, fluticasone/vilanterol, mometasone/formoterol | diuretics | potential for worsening of diuretic-associated hypokalemia and/or ECG changes with beta-agonist concurrent administration, especially with high beta-agonist doses | administer combination cautiously; monitoring potassium levels may be necessary | moderate (CP) |
Legend:
- +CP = Clinical Pharmacology
- COPD = chronic obstructive pulmonary disease
- ECG = electrocardiogram
- MAOIs = monoamine oxidase inhibitors
- TCAs = tricyclic antidepressants
5. References
- IBM Micromedex DRUGDEX (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/.
- Beclomethasone dipropionate HFA inhalation aerosol (QVAR Redihaler) package insert. Teva Respiratory, September 2022.
- Budesonide inhalation powder (Pulmicort Flexhaler) package insert. AstraZeneca, October 2019.
- Ciclesonide inhalation aerosol (Alvesco) package insert. Covis Pharma, February 2023.
- Fluticasone furoate inhalation powder (Arnuity Ellipta) package insert. GlaxoSmithKline, February 2020.
- Fluticasone propionate inhalation aerosol (Flovent HFA) package insert. GlaxoSmithKline, August 2021.
- Fluticasone propionate inhalation powder (Flovent Diskus) package insert. GlaxoSmithKline, June 2022.
- Fluticasone inhalation powder (ArmonAir™ Digihaler) package insert. Teva Respiratory, September 2022.
- Mometasone furoate HFA inhalation aerosol (Asmanex HFA) package insert. Merck & Co., June 2021.
- Mometasone furoate inhalation powder (Asmanex Twisthaler) package insert. Merck & Co., June 2021.
- Fluticasone/salmeterol inhalation aerosol (Advair HFA) package insert. GlaxoSmithKline, August 2021.
- Mometasone furoate/formoterol inhalation aerosol (Dulera) package insert. Merck & Co., June 2021.
- Fluticasone/salmeterol inhalation powder (Advair Diskus) package insert. GlaxoSmithKline, October 2020.
- Fluticasone/salmeterol inhalation powder (AirDuo RespiClick) package insert. Teva Pharmaceuticals, September 2022.
- Budesonide/formoterol fumarate inhalation aerosol (Symbicort) package insert. AstraZeneca, July 2019.
- Fluticasone/vilanterol inhalation powder (Breo Ellipta™) package insert. GlaxoSmithKline, July 2021.
- Fluticasone/umeclidinium/vilanterol inhalation powder (Trelegy Ellipta) package insert. GlaxoSmithKline, December 2022.
- Budesonide/ Glycopyrrolate/ formoterol fumarate inhalation aerosol (Breztri Aerosphere) package insert. January 2022.
- Fluticasone/salmeterol inhalation powder (Wixela Inhub) package insert. Mylan Pharmaceuticals, Inc., August 2022.
- Fluticasone/salmeterol inhalation powder (AirDuo Digihaler) package insert. Teva Pharmaceuticals, April 2022.
- Global Initiative for Chronic Obstructive Lung Disease. Global strategy for the diagnosis, management, and prevention of chronic obstructive lung disease. 2023 report. Available at: https://goldcopd.org/2021-gold-reports/. Accessed March 20, 2023.
- Global Initiative for Asthma. Global Strategy for Asthma Management and Prevention, 2022. Available from: https://ginasthma.org/gina-reports/. Accessed March 16, 2023.
- National Heart, Lung, and Blood Institute. 2020 focused updates to the asthma management guidelines: a report from the national asthma education and prevention program coordinating committee expert panel working group, 2021. Available from: https://www.nhlbi.nih.gov/health-topics/asthma-management-guidelines-2020-updates. Accessed March 20, 2023.
Aerosolized Agents - metered-dose inhalers: beta2 adrenergic drugs (long-acting)
Aerosolized Agents - metered-dose inhalers: beta2 adrenergic drugs (long-acting) - Index
Medications listed in the tables and non-FDA approved indications that may be included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 28, 2023
- April 23, 2021
- March 2019
- March 2017
- Oct. 2014
- Feb. 2013
- Oct. 2012
- Jan. 2011
- July 2007
- March 2003
- April 2002
- March 2001
- March 2000
- Feb. 1999
- March 1998
- March 1997
- Aug. 1995.
- Initially developed
- Jan. 1995
1. Dosage
Long-acting, selective beta2-agonists (LABAs) are FDA-approved for use as adjunctive therapy with long-term asthma control medications, such as inhaled corticosteroids (ICS), in managing reversible obstructive airways disease, including asthma and nocturnal asthma, in patients inadequately controlled with long-term asthma control medications. LABAs are contraindicated for use as monotherapy in asthma management due to an increased risk of asthma-related death as well as increased risks in asthma-related hospitalizations in pediatric and adolescent patients. Serevent Diskus® (salmeterol) is FDA-approved for asthma in adults and children four years and older when used with an ICS, and it is also FDA-approved for use to acutely prevent exercise-induced bronchospasm (EIB) on an as-needed basis. LABAs are FDA-approved for use in adults as maintenance therapy for bronchoconstriction associated with chronic obstructive pulmonary disease (COPD), including emphysema and chronic bronchitis. Striverdi Respimat® (olodaterol) is another LABA available without an ICS, and it is FDA-approved for the management of COPD. It does not have an FDA-approval for asthma.
LABAs combined with ICS are FDA-approved for use in adults and children as asthma maintenance therapy: Advair® HFA metered aerosol (fluticasone propionate/salmeterol) is FDA-approved for use in patients 12 years of age and older, and Dulera® (mometasone/formoterol) inhalation aerosol is FDA-approved for use in patients 5 years of age and older. Advair Diskus® (fluticasone propionate/salmeterol) inhalation powder is FDA-approved for use in asthma maintenance in patients 4 years of age and older. AirDuo RespiClick® and AirDuo Digihaler® (fluticasone/salmeterol) inhalation powders provide additional dosage strengths, and they have been approved for use in patients with asthma who are 12 years and older. Symbicort® (budesonide/formoterol) inhalation aerosol and Advair Diskus® (fluticasone propionate/salmeterol) are FDA-approved for use in adults as COPD maintenance therapy. Symbicort® is also FDA-approved for the management of asthma in adults and children 6 years of age and older. The combination Breo Ellipta® (fluticasone/ vilanterol) is FDA approved for the management of COPD and asthma in patients 18 years of age and older1,2,11. The Global Initiative for Asthma (GINA) “Global Strategy for Asthma Management and Prevention” guidelines recommend the use of combination ICS-LABA with budesonide and formoterol as maintenance and rescue therapy for most patients12.
Anoro Ellipta® (umeclidinium/vilanterol), Bevespi Aerosphere® (glycopyrrolate/formoterol), and Stiolto Respimat® (tiotropium/olodaterol) are indicated for use in adults as maintenance therapy for COPD but are not FDA-approved for use in asthma.
Additionally, a triple therapy inhaler containing fluticasone, umeclidinium and vilanterol, Trelegy Ellipta®, is approved for COPD management to treat airway obstruction and reduce exacerbations and for the maintenance treatment of asthma in patients 18 years and older.
Duaklir Pressair® (aclidinium bromide/ formoterol) is a long-acting beta agonist and long-acting muscarinic antagonist combination product approved for the management of COPD in adults.
1.1. Adults
To manage EIB in adults, one salmeterol 50 mcg inhalation is administered at least 30 minutes before exercise on an as needed basis and should not be repeated for at least 12 hours after administration of the previous dose. Patients receiving twice daily LABA doses chronically should not administer additional LABA doses for EIB management.
Maximum recommended adult daily doses for LABA use as monotherapy in asthma and COPD are summarized in Table 1. Prescribed dosages exceeding these guidelines will be reviewed.
LABA/ICS combinations are FDA-approved for use in asthma and COPD maintenance therapy. Advair Diskus® 250 mcg/50 mcg is the only fluticasone/salmeterol dose approved for use in adult patients with COPD. Symbicort® 80 mcg/4.5 mcg and 160 mcg/4.5 mcg are FDA-approved for use in asthma, while 160 mcg/4.5 mcg is the recommended strength for budesonide/formoterol in COPD. Advair HFA®, AirDuo RespiClick®, AirDuo Digihaler®, and Dulera® are FDA-approved for asthma management only.
Maximum adult daily dosages for LABA combination therapy are summarized in Table 2. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
olodaterol hydrochloride (Striverdi Respimat®) | inhalation aerosol: 2.5 mcg/actuation | COPD | 2 actuations once daily; total dose = 5 mcg/day |
salmeterol (Serevent Diskus®) | inhalation powder: 50 mcg/inhalation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 100 mcg/day |
COPD | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 100 mcg/day |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
aclidinium bromide/formoterol fumarate (Duaklir Pressair) | inhalation powder: 400 mcg/ 12 mcg/ inhalation | COPD | 2 actuations/day (1 actuation twice daily); total dose = 800 mcg/24 mcg/day |
budesonide/ formoterol ((Symbicort, generics) | inhalation aerosol: 80 mcg/4.5 mcg/ inhalation | Asthma | 4 actuations/day (2 actuations twice daily); total dose = 320 mcg/18 mcg/day |
inhalation aerosol: 160 mcg/4.5 mcg/inhalation | Asthma | 4 actuations/day (2 actuations twice daily); total dose = 640 mcg/18 mcg/day | |
COPD | 4 actuations/day (2 actuations twice daily); total dose = 640 mcg/18 mcg/day | ||
budesonide/ glycopyrrolate/ formoterol fumarate (Breztri Aerosphere) | inhalation aerosol: 160 mcg/9 mcg/4.8 mcg/inhalation | COPD | 4 actuations/day (2 actuations twice daily); total dose = 640 mcg/ 36 mcg/ 19.2 mcg/ day |
fluticasone propionate/salmeterol xinafoate (Advair HFA, generic) | inhalation aerosol: 45 mcg fluticasone/21 mcg salmeterol/inhalation | Asthma | 4 actuations/day (2 actuations twice daily); total dose = 180 mcg/84 mcg/day |
inhalation aerosol: 115 mcg fluticasone/21 mcg salmeterol/inhalation | 4 actuations/day (2 actuations twice daily); total dose = 460 mcg/84 mcg/day | ||
inhalation aerosol: 230 mcg fluticasone/21 mcg salmeterol/inhalation | 4 actuations/day (2 actuations twice daily); total dose = 920 mcg/84 mcg/day | ||
fluticasone propionate/ salmeterol (Advair Diskus, Wixela Inhub, generics) | inhalation powder: 100 mcg fluticasone/50 mcg salmeterol/ inhalation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 200 mcg/100 mcg/day |
inhalation powder: 250 mcg fluticasone/50 mcg salmeterol/inhalation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose =500 mcg/100 mcg/day | |
COPD | 2 actuations/day in divided doses (1 actuation twice daily); total dose =500 mcg/100 mcg/day | ||
inhalation powder: 500 mcg fluticasone/50 mcg salmeterol/inhalation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 1000 mcg/100 mcg/day | |
fluticasone propionate/salmeterol (AirDuo RespiClick) | inhalation powder: 55 mcg fluticasone/14 mcg salmeterol/inhalation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg/28 mcg/day |
inhalation powder: 113 mcg fluticasone/14 mcg salmeterol/inhalation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg/28 mcg/day | ||
inhalation powder: 232 mcg fluticasone/14 mcg salmeterol/inhalation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg/28 mcg/day | ||
fluticasone propionate/salmeterol (AirDuo Digihaler) | inhalation powder: 55 mcg fluticasone/ 14 mcg salmeterol/inhalation | Asthma | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg/28 mcg/day |
inhalation powder: 113 mcg fluticasone/14 mcg salmeterol/inhalation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg/28 mcg/day | ||
inhalation powder: 232 mcg fluticasone/14 mcg salmeterol/inhalation | 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg/28 mcg/day | ||
fluticasone furoate/umeclidinium/vilanterol (Trelegy Ellipta) | inhalation powder: 100 mcg/ 62.5 mcg/ 25 mcg/inhalation | Asthma | 1 actuation/day; total dose = 100 mcg/62.5 mcg/ 25 mcg/day |
COPD | 1 actuation/day; total dose = 100 mcg/62.5 mcg/ 25 mcg/day | ||
inhalation powder: 200 mcg/ 62.5 mcg/ 25 mcg/inhalation | Asthma | 1 actuation/day; total dose = 200 mcg/62.5 mcg/ 25 mcg/day | |
fluticasone furoate/vilanterol (Breo Ellipta, generics) | inhalation powder: 100 mcg fluticasone/25 mcg vilanterol/inhalation | Asthma | 1 actuation/day; total dose = 100 mcg/25 mcg/day |
inhalation powder: 200 mcg fluticasone/25 mcg vilanterol/inhalation | 1 actuation/day; total dose = 200 mcg/25 mcg/day | ||
inhalation powder: 100 mcg fluticasone/25 mcg vilanterol/inhalation | COPD | 1 actuation/day; total dose = 100 mcg/25 mcg/day | |
glycopyrrolate/ formoterol (Bevespi Aerosphere) | inhalation aerosol: 9 mcg glycopyrrolate/ 4.8 mcg formoterol/ actuation | COPD | 4 actuations/day in two divided doses (2 actuations twice daily); total dose = 36 mcg/19.2 mcg/day |
mometasone/ formoterol (Dulera) | inhalation aerosol: 100 mcg mometasone/5 mcg formoterol/inhalation | Asthma | for patients on medium-dose inhaled corticosteroids: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 400 mcg/20 mcg/day |
inhalation aerosol: 200 mcg mometasone/5 mcg formoterol/inhalation | patients on high-dose inhaled corticosteroids: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 800 mcg/20 mcg/day | ||
tiotropium/olodaterol (Stiolto Respimat) | inhalation aerosol: 2.5 mcg tiotropium/2.5 mcg olodaterol/inhalation | COPD | 2 actuations once daily (total dose = 5 mcg/5 mcg/day |
umeclidinium/vilanterol (Anoro Ellipta) | inhalation powder: 62.5 mcg umeclidinium/25 mcg vilanterol/inhalation | COPD | 1 actuation/day; total dose = 62.5 mcg/25 mcg/day |
1.2. Pediatrics
The safety and efficacy of inhalational salmeterol in children less than 4 years have not been established. Olodaterol is not approved for use in children as safety and efficacy of these agents have not been established in the pediatric population. Similarly, the glycopyrrolate/formoterol, aclidinium/formoterol, fluticasone/vilanterol, and the umeclidinium/vilanterol combination products are not FDA-approved for pediatric use as safety and efficacy have not been determined in this patient population for these inhalation combinations.
To prevent EIB in pediatric patients 4 years of age and older, one salmeterol 50 mcg inhalation is administered at least 30 minutes before exercise on an as-needed basis; doses should not be repeated for at least 12 hours after administration of the previous dose. Patients receiving twice daily LABA doses chronically should not administer additional LABA doses for EIB management.
Pediatric dosages for LABAs used as maintenance asthma therapy are summarized in Tables 3 and 4.
Drug Name | Dosage Form/Strength | Patient Age/Maximum Recommended Dosage |
---|---|---|
salmeterol (Serevent® Diskus®) | inhalation powder: 50 mcg/inhalation | Greater than or equal to 4 years of age: 2 actuations/day (1 actuation twice daily); total dose = 100 mcg/day |
Drug Name | Dosage Form/Strength | Patient Age/Maximum Recommended Dosage |
---|---|---|
budesonide/formoterol (Symbicort®) | inhalation aerosol: 80 mcg/4.5 mcg/ inhalation | 6 to 11 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 320 mcg/18 mcg/day |
Greater than or equal to 12 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 320 mcg/18 mcg/day | ||
inhalation aerosol: 160 mcg/4.5 mcg/inhalation | Greater than or equal to 12 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 640 mcg/18 mcg /day | |
fluticasone propionate/ salmeterol xinafoate (Advair HFA®) | inhalation aerosol: 45 mcg/21 mcg/ inhalation | Greater than or equal to 12 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 180 mcg/84 mcg/day |
inhalation aerosol: 115 mcg/21 mcg/ inhalation | Greater than or equal to 12 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 460 mcg/84 mcg/day | |
inhalation aerosol: 230 mcg/21 mcg/inhalation | Greater than or equal to 12 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 920 mcg /84 mcg/day | |
fluticasone propionate/ salmeterol (Advair Diskus®) | inhalation powder: 100 mcg/50 mcg/ inhalation | 4-11 years of age: 2 actuations/day (1 actuation twice daily); total dose = 200 mcg/100 mcg/day |
inhalation powder: 100 mcg/50 mcg/inhalation | Greater than or equal to 12 years of age: 2 actuations/day (1 actuation twice daily); total dose = 200 mcg/100 mcg/day | |
inhalation powder: 250 mcg/50 mcg/inhalation | Greater than or equal to 12 years of age: 2 actuations/day (1 actuation twice daily); total dose = 500 mcg/100 mcg/day | |
inhalation powder: 500 mcg/50 mcg/ inhalation | Greater than or equal to 12 years of age: 2 actuations/day (1 actuation twice daily); total dose = 1000 mcg/100 mcg/day | |
fluticasone propionate/salmeterol (AirDuo RespiClick®) | inhalation powder: 55 mcg fluticasone/14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg/28 mcg/day |
113 mcg fluticasone/14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg/28 mcg/day | |
232 mcg fluticasone/14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg/28 mcg/day | |
fluticasone propionate/salmeterol (AirDuo Digihaler®) | 55 mcg fluticasone/14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 110 mcg/28 mcg/day |
inhalation powder: 113 mcg fluticasone/14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 226 mcg/28 mcg/day | |
inhalation powder: 232 mcg fluticasone/14 mcg salmeterol/inhalation | Greater than or equal to 12 years of age: 2 actuations/day in divided doses (1 actuation twice daily); total dose = 464 mcg/28 mcg/day | |
mometasone/ formoterol (Dulera®) | inhalation aerosol: 50 mcg/5 mcg/ inhalation | 5-11 years of age: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 200 mcg/ 20 mcg/ day |
100 mcg/5 mcg/inhalation | Greater than or equal to 12 years of age: patients on medium-dose inhaled corticosteroids: 4 actuations/day in divided doses (2 actuations twice daily); total dose = 400 mcg/20 mcg/day | |
200 mcg/5 mcg/inhalation |
Legend:
- Number of maximum actuations per day based on dose of salmeterol and formoterol, and independent of inhaled corticosteroid dose.
2. Duration of Therapy
Generally, LABAs should only be used as maintenance therapy. Recent guideline updates recommend the combined use of formoterol and budesonide as maintenance and rescue therapy for most patients with asthma, including the use of this combination as needed12.
For maintenance therapy, daily administration of LABAs alone or in combination with ICS is warranted in asthma and COPD. Formoterol combination products, olodaterol monotherapy and combination products, salmeterol monotherapy and combination products, and vilanterol combination products are metered-dose inhalers designed to deliver a set number of inhalations based on the canister size as well as the medication prescribed. Tables 5 and 6 summarize the number of inhalations available LABA and LABA combination products provide, respectively, and the days’ supply per inhaler or blister package based on the maximum dose allowed per day (see Tables 1 through 4). Excessive use may be identified based on refill frequency. Inappropriate supply of salmeterol metered-dose inhalers, salmeterol/fluticasone blister packages, formoterol blister packages, budesonide/formoterol metered-dose inhalers, or mometasone/formoterol metered-dose inhalers will be monitored by reviewing excessive refills.
Drug | # of Actuations Per Canister | Days’ Supply (based on maximum dose per day) + |
---|---|---|
salmeterol dry powder inhaler * 60 blisters |
60 | 30 |
olodaterol inhalation aerosol ~ | 60 | 30 |
Legend:
- + calculated based on canister size/blister package size and maximum dose allowed per day
- * Salmeterol inhalation powder, alone or in combination with fluticasone, may be used in children less than 4 years of age
Drug | # of Actuations Per Canister | Days’ Supply (based on maximum dose per day) + |
---|---|---|
aclidinium bromide/ formoterol fumarate inhalation 400 mcg/12 mcg/inhalation |
60 | 30 |
budesonide/formoterol inhalation aerosol # 80 mcg/4.5 mcg/inhalation |
120 | 30 |
160 mcg/4.5 mcg/inhalation | 120 | 30 |
budesonide/ glycopyrrolate/ formoterol fumarate 160 mcg/9 mcg/4.8 mcg/inhalation | 120 | 30 |
fluticasone propionate/salmeterol xinafoate inhalation aerosol ^ 45 mcg fluticasone/21 mcg salmeterol/ inhalation |
60 120 |
15 30 |
115 mcg fluticasone/21 mcg salmeterol/inhalation | 60 120 |
15 30 |
230 mcg fluticasone/21 mcg salmeterol/inhalation | 60 120 |
15 30 |
fluticasone propionate/salmeterol inhalation powder * 100 mcg fluticasone/50 mcg salmeterol/ inhalation: 60 blisters |
60 | 30 |
250 mcg fluticasone/50 mcg salmeterol/inhalation: 60 blisters |
60 | 30 |
500 mcg fluticasone/50 mcg salmeterol/inhalation: 60 blisters |
60 | 30 |
fluticasone/salmeterol inhalation powder ^ 55 mcg/14 mcg/actuation (0.45 g canister) |
60 | 30 |
113 mcg/14 mcg/actuation (0.45 g canister) | 60 | 30 |
232 mcg/14 mcg/actuation (0.45 g canister) | 60 | 30 |
fluticasone furoate/ umeclidinium/vilanterol inhalation powder ~ 100 mcg/62.5 mcg/25 mcg/actuation (one strip contains fluticasone, one strip contains umeclidinium and vilanterol) 60 blisters (one strip contains fluticasone, one strip contains umeclidinium and vilanterol) |
14 30 |
14 |
200 mcg/62.5 mcg/25 mcg/actuation (one strip contains fluticasone, one strip contains umeclidinium and vilanterol) 60 blisters (one strip contains fluticasone, one strip contains umeclidinium and vilanterol) |
14 30 |
14 30 |
fluticasone furoate/vilanterol inhalation powder ~ 100 mcg/25 mcg/actuation (one strip contains fluticasone, one strip contains vilanterol) 60 blisters (one strip contains fluticasone, one strip contains vilanterol) |
14 30 |
14 30 |
200 mcg/25 mcg/actuation (one strip contains fluticasone, one strip contains vilanterol) 60 blisters (one strip contains fluticasone, one strip contains vilanterol) |
14 30 |
14 30 |
glycopyrrolate/formoterol inhalation aerosol ~ 9 mcg/4.8 mcg/actuation |
120 | 7 30 |
mometasone furoate/formoterol inhalation aerosol ^ 50 mcg/5 mcg/inhalation! |
120 | 30 |
100 mcg/5 mcg/inhalation | 120 | 15 30 |
200 mcg/5 mcg/inhalation | 120 | 15 30 |
tiotropium/ olodaterol inhalation aerosol ~ 2.5 mcg/ 2.5 mcg/inhalation |
60 | 30 5 |
umeclidinium/vilanterol inhalation powder ~ 14 blisters (one strip contains umeclidinium, one strip contains vilanterol) 60 blisters (one strip contains umeclidinium, one strip contains vilanterol) |
30 | 7 30 |
Legend:
- + calculated based on canister size/blister package size and maximum dose allowed per day
- ~ not indicated for use in children
- * Salmeterol inhalation powder, alone or in combination with fluticasone, may be used in children > 4 years of age
- # Budesonide/formoterol indicated for children > 6 years of age
- ^ Fluticasone/salmeterol inhalation aerosol and fluticasone/salmeterol inhalation powder as AirDuo® RespiClick and AirDuo Digihaler® as well as mometasone/formoterol inhalation aerosols only indicated for children > 12 years of age
- ! Mometasone furoate/ formoterol 50 mcg/ 5mcg/ inhalation is approved for children 5 years of age and older
3. Duplicative Therapy
Acute asthma exacerbations require treatment with short-acting beta2-adrenergic agents even though maintenance therapy with LABAs may be prescribed concomitantly. Patients may receive a long- and short-acting beta2-adrenergic drug concurrently for short time periods to manage acute attacks. LABAs used in conjunction with frequently administered short-acting beta2-adrenergic drugs (i.e., frequent refill of a short-acting beta2-adrenergic agonist within a 30-day time period) will be reviewed.
Current literature does not support the adjunctive use of multiple LABAs for prevention and control of asthma symptoms. Concomitant LABA use will be reviewed as clinical evidence does not validate improved outcome with conjunctive therapy.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for LABAs and combination products are summarized in Table 7. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level + |
---|---|---|---|---|
beta2-agonists | atomoxetine | concurrent administration may increase risk of cardiovascular adverse effects (e.g., tachycardia, hypertension); interaction may be less likely with inhaled beta2-agonists | monitor patients for increased cardiovascular adverse effects | 3-moderate (CP) |
beta2-agonists | beta blockers | concurrent administration may decrease effectiveness of beta-adrenergic blocker or beta-2 agonists | combination not recommended in asthma/COPD patients; if adjunctive therapy necessary, utilize cardioselective beta blocker (e.g., atenolol, bisoprolol) | 2-major (CP) |
beta2-agonists | diuretics, xanthine derivatives (e.g., theophylline), corticosteroids | potential for worsening of hypokalemia and/or ECG changes with beta2-agonist concurrent administration, especially with high beta2-agonist doses | administer combination cautiously, although common for xanthines and steroids to be administered adjunctively with beta2-agonists; monitor potassium levels as necessary | 3-moderate (CP) |
beta2-agonists | MAOIs (including linezolid) | concurrent administration may increase risk of tachycardia, hypomania, or agitation due to potentiation of effects on vascular system | administer combination cautiously or within 2 weeks of MAOI discontinuation; observe patients for adverse effects | 2-major (CP) |
beta2-agonists | QTc interval-prolonging medications (e.g., class I, III anti-arrhythmic, ziprasidone, dolasetron) | concurrent administration may increase risk of cardiotoxicity (e.g., life-threatening arrhythmias, cardiac arrest) due to potential for additive QTc interval prolongation and, rarely, torsades de pointes | administer combination cautiously | 3-moderate (CP) |
beta2-agonists | TCAs | concurrent administration may potentiate effects on cardiovascular system and increase risk of adverse events | cautiously administer together, including within 2 weeks of TCA discontinuation; monitor patients and observe for changes in blood pressure, heart rate and ECG | 3-moderate (CP) |
salmeterol, ICS | strong CYP3A4 inhibitors (e.g., ketoconazole, ritonavir, clarithromycin) | salmeterol, ICS extensively CYP3A4 metabolized; conjunctive administration may increase salmeterol, ICS serum levels and potential for increased adverse cardiovascular effects (salmeterol), steroid adverse effects (ICS) | avoid combination, if possible; if combination necessary, monitor for salmeterol, ICS adverse effects and adjust therapy as necessary | 2-major (CP) |
steroids | quinolones | increased potential for serious tendonitis, tendon rupture with concurrent therapy | closely monitor patients requiring combination therapy; discontinue quinolone if tendon pain develops | 3-moderate (CP) |
systemic steroids | bupropion | potential increased seizure risk due to systemic steroid-induced lowering of seizure threshold | utilize only recommended bupropion dosages; initiate bupropion therapy with low doses and titrate slowly when combination therapy warranted; closely monitor patients for seizure development | moderate (CP) |
Legend:
- +CP = Clinical Pharmacology
- COPD = chronic obstructive pulmonary disease
- ECG = electrocardiogram
- MAOIs = monoamine oxidase inhibitors
- TCAs = tricyclic antidepressants
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: March 16, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed March 16, 2023.
- Salmeterol xinafoate inhalation powder (Serevent® Diskus®) package insert. GlaxoSmithKline, February 2022.
- Olodaterol inhalation spray (Striverdi® Respimat®) package insert. Boehringer Ingelheim Pharmaceutical, Inc., November 2021.
- Fluticasone/salmeterol inhalation aerosol (Advair® HFA) package insert. GlaxoSmithKline, August 2021.
- Mometasone furoate/formoterol inhalation aerosol (Dulera®) package insert. Merck & Co., June 2021.
- Fluticasone/salmeterol inhalation powder (Advair Diskus®) package insert. GlaxoSmithKline, October 2020.
- Fluticasone/salmeterol inhalation powder (AirDuo RespiClick®) package insert. Teva Pharmaceuticals, September 2022.
- Fluticasone/salmeterol inhalation powder (AirDuo Digihaler®) package insert. Teva Pharmaceuticals, April 2022.
- Budesonide/formoterol fumarate inhalation aerosol (Symbicort®) package insert. AstraZeneca, July 2019.
- Fluticasone/vilanterol inhalation powder (Breo® Ellipta™) package insert. GlaxoSmithKline, July 2021.
- Global Initiative for Asthma. Global Strategy for Asthma Management and Prevention, 2022. Available from: https://ginasthma.org/gina-reports/. Accessed March 16, 2023.
- Umeclidinium/vilanterol inhalation powder (Anoro® Ellipta®) package insert. GlaxoSmithKline, October 2022.
- Glycopyrrolate/formoterol inhalation aerosol (Bevespi Aerosphere®) package insert. AstraZeneca, November 2020.
- Tiotropium/olodaterol (Stiolto® Respimat®) package insert. Boehringer-Ingelheim Pharmaceuticals, Inc., November 2021.
- Fluticasone/umeclidinium/vilanterol inhalation powder (Trelegy® Ellipta®) package insert. GlaxoSmithKline, December 2022.
- Aclidinium/ formoterol fumarate powder (Duaklir Pressair®) metered dose inhaler package insert. Circassia Pharmaceuticals, Inc., January 2022.
- Budesonide/ Glycopyrrolate/ formoterol fumarate inhalation aerosol (Breztri Aerosphere®) package insert. January 2022.
- Fluticasone/salmeterol inhalation powder (Wixela Inhub®) package insert. Mylan Pharmaceuticals, Inc., August 2022.
Aerosolized Agents - metered-dose inhalers: beta2 adrenergic drugs (short-acting)
Aerosolized Agents - metered-dose inhalers: beta2 adrenergic drugs (short-acting) - Index
Medications listed in the tables and non-FDA approved indications that may be included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 28, 2023
- April 23, 2021
- March 2019
- March 2017
- May 2016
- Feb. 2016
- July 2014
- Oct. 2012
- Oct. 2010
- Jan. 2008
- March 2003
- March 2002
- March 2001
- March 2000
- May 1999
- Feb. 1999
- Feb. 1998
- March 1997
- Aug. 1995
- Initially developed
- Jan. 1995
1. Dosage
1.1. Adults
Beta2-adrenergic drugs, used routinely in asthma management, can be identified as long-acting or short-acting agents. Both short- and long-acting compounds can be used to prevent bronchospasm. However, short-acting compounds are the drugs of choice for acute bronchospasm as these agents act within minutes to cause bronchodilation. Drugs in this category include albuterol and levalbuterol. For acute bronchospasm, treatment is initiated with a short-acting beta2-adrenergic agent either as a metered-dose inhaler or a nebulizer solution. Treatment of acute attacks is usually for a finite time period based on the intensity of the attack and/or the need for medical attention either through emergency department management or hospitalization. Usage is individualized based on patient characteristics..
Although not FDA-approved, beta2-selective adrenergic agents such as albuterol are effective in chronic obstructive pulmonary disease (COPD) maintenance therapy to improve lung function and mucociliary clearance. Albuterol has become one of the mainstays of therapy for acute exacerbations of chronic obstructive pulmonary disease COPD due to rapid onset of action as well as efficacy in producing bronchodilation.
For preventive/ maintenance therapy, albuterol is FDA-approved as preventive therapy for exercise-induced asthma. To manage exercise-induced bronchospasm (EIB) in adults, two 90 mcg albuterol inhalations are administered at least 15 to 30 minutes before exercise on an as-needed basis.
Ipratropium/albuterol combination therapy is FDA-approved for use as second-line therapy in adult COPD patients who continue to experience bronchospasm with an aerosol bronchodilator and require a second bronchodilator.
Maximum recommended daily doses for available inhalational beta2-adrenergic agents as monotherapy and combination therapy are summarized in Tables 1 and 2. Prescribed dosages exceeding these criteria will be reviewed.
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
albuterol aerosol solution (Proventil HFA®, Ventolin HFA, generic) | asthma, prevention of exercise-induced bronchospasm | aerosol (90 mcg albuterol base/actuation) | 12 actuations/day (total dose = 1080 mcg albuterol base) |
albuterol inhalation powder (ProAir RespiClick®, ProAir Digihaler) | asthma, prevention of exercise-induced bronchospasm | (90 mcg albuterol base/actuation) | 12 actuations/day (total dose = 1080 mcg albuterol base) |
levalbuterol (Xopenex HFA, generic) | asthma | aerosol (45 mcg levalbuterol free base/actuation) | 12 actuations/day (total dose = 540 mcg levalbuterol free base) |
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
ipratropium/ albuterol (Combivent Respimat®) | chronic obstructive pulmonary disease | inhalation spray (20 mcg ipratropium/ 100 mcg albuterol/ actuation) | 6 actuations/day (total dose = 120 mcg ipratropium/ 600 mcg albuterol) |
1.2. Pediatrics
Proventil HFA, Ventolin HFA, ProAir RespiClick, ProAir Digihaler, and generic albuterol HFA are FDA-approved for use in children 4 years of age and older for prevention/treatment of bronchospasm and prevention of exercise-induced bronchospasm1-6. Levalbuterol is FDA-approved for use in children 4 years of age and older for prevention/treatment of bronchospasm1, 7.;
To prevent EIB in pediatric patients 4 years of age and older, two albuterol 90 mcg inhalations are administered at least 15 to 30 minutes before exercise on an as-needed basis.
Combination therapy with ipratropium and albuterol is not FDA-approved for use in pediatric patients as safety and efficacy in this patient population have not been established.
Pediatric dosages for short-acting beta2-agonists used to manage acute asthma exacerbations are summarized in Table 3. Dosages exceeding these recommendations will be reviewed.
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
albuterol (Proventil HFA®, Ventolin HFA) | Asthma, prevention of exercise-induced bronchospasm | aerosol solution (90 mcg albuterol base/actuation) |
|
albuterol (ProAir RespiClick®, ProAir Digihaler®) | Asthma, prevention of exercise-induced bronchospasm | inhalation powder (90 mcg albuterol base/actuation) |
|
levalbuterol (Xopenex HFA®) | Asthma | aerosol (45 mcg levalbuterol free base/actuation) |
|
2. Duration of Therapy
Metered-dose inhalers are designed to deliver a set number of inhalations based on the canister size as well as the medication prescribed. Days’ supply for inhalational beta2-adrenergic agents is summarized in Table 4 and 5, based on the maximum recommended doses listed in Tables 1-3, and the number of actuations per canister or number of capsules per blister card listed in Tables 4 and 5. Excessive use may be identified based on refill frequency. Inappropriate supply of short-acting beta2-adrenergic agents will be monitored by reviewing excessive refills.
Drug | # of Actuations Per Canister | Days’ Supply (based on maximum dose per day) + |
---|---|---|
Albuterol (generic)
|
200 | ~ 16 days |
Albuterol (ProAir RespiClick®)
|
200 | ~16 days |
Albuterol (ProAir Digihaler®)
|
200 | ~16 days |
Albuterol (Proventil HFA®)
|
200 | ~16 days |
Albuterol (Ventolin HFA®)
|
60 200 |
5 days ~16 days |
Levalbuterol (Xopenex HFA®)
|
200 | ~ 16 days |
Legend:
- + calculated based on canister size and maximum dose allowed per day (summarized in Tables 1 and 2)
Drug | # of Actuations Per Canister | Days Supply (based on maximum dose per day) + |
---|---|---|
Ipratropium/albuterol (Combivent® Respimat®) (4 g cartridge) | 120 | 20 days |
3. Duplicative Therapy
The use of two or more metered-dose inhaler short-acting beta2-adrenergic compounds concurrently for prevention and control of asthma symptoms is not justified and will be reviewed. Nebulized short-acting beta2-adrenergic therapy is available for pediatric patients who are too ill or too young to obtain medication from an aerosolized metered-dose device. However, adjunctive administration of a short-acting beta2-adrenergic agonist metered-dose inhaler with a short-acting beta2-agonist nebulized bronchodilator is also not recommended and will be reviewed.
Acute asthma exacerbations require treatment with short-acting beta2-adrenergic agents even though maintenance therapy with a long-acting beta2-agonist like salmeterol may be prescribed concomitantly. Patients may receive a long- and short-acting beta2-adrenergic drug concurrently for short time periods to manage acute attacks. Patient profiles containing excessive prescriptions for a short-acting beta2-adrenergic drug (i.e., frequent refill of short-acting beta2-adrenergic agonist within a 30-day time period) in conjunction with long-acting beta2-agonists will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug interactions considered clinically relevant for short-acting beta2-adrenergic bronchodilators are summarized in Table 6. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level + |
---|---|---|---|---|
beta2-agonists | MAOIs (including linezolid) | concurrent administration of MAOIs with beta2-agonists may increase risk of tachycardia, hypomania, or agitation due to potentiation of effects on vascular system | administer combination cautiously or within 2 weeks of MAOI discontinuation; observe patients for adverse effects | 2-major (CP) |
beta2-agonists | TCAs | concurrent administration of TCAs with beta2-agonists may potentiate effects on cardiovascular system and increase risk of adverse events | cautiously administer TCAs and beta2-agonists together, including within 2 weeks of TCA discontinuation; monitor patients and observe for changes in blood pressure, heart rate and ECG | 3-moderate (CP) |
beta2-agonists | beta blockers | concurrent administration may decrease effectiveness of beta-adrenergic blocker or beta-2 agonists | combination not recommended in asthma/ COPD patients; if adjunctive therapy necessary, utilize cardioselective beta blocker (e.g., atenolol, bisoprolol) | 2-major (CP) |
beta2-agonists | diuretics | potential for worsening of diuretic- associated hypokalemia and/or ECG changes with beta2-agonist concurrent administration, especially with high beta2-agonist doses | administer combination cautiously; monitor potassium levels as necessary | 3-moderate (CP) |
beta2-agonists | atomoxetine | concurrent administration may increase risk of cardiovascular adverse effects (e.g., tachycardia, hypertension); interaction may be less likely with inhaled beta2-agonists | monitor patients for increased cardiovascular adverse effects | 3-moderate (CP) |
beta2-agonists | QTc interval-prolonging medications (e.g., class I, III anti-arrhythmic, tricyclic antidepressants, dolasetron) | concurrent administration may increase risk of cardiotoxicity (e.g., life-threatening arrhythmias, cardiac arrest) as arformoterol and formoterol may cause QTc interval prolongation and, rarely, torsades de pointes | administer combination cautiously | 2-major, 3-moderate (CP) |
ipratropium/albuterol | antimuscarinics | co-administration may produce additive anticholinergic effects and potential for increased adverse effects | cautiously administer ipratropium with other antimuscarinics; monitor for increased adverse effects | 3-moderate (CP) |
Legend:
- +CP = Clinical Pharmacology
- COPD = chronic obstructive pulmonary disease
- ECG = electrocardiogram
- MAOIs = monoamine oxidase inhibitors
- TCAs = tricyclic antidepressants
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed February 23, 2023.
- Albuterol sulfate HFA aerosol, metered package insert. Preferred Pharmaceuticals Inc., 2022.
- Albuterol inhalation aerosol (Proventil® HFA) package insert. Sandoz, September 2022.
- Albuterol inhalation aerosol (Ventolin® HFA) package insert. GlaxoSmithKline, August 2021.
- Albuterol inhalation powder (ProAir RespiClick®) package insert. Teva Respiratory, September 2022.
- Albuterol inhalation powder (ProAir Digihaler®) package insert. Teva Respiratory, December 2022.
- Levalbuterol inhalation aerosol (Xopenex HFA®) package insert. Sunovion Pharmaceuticals Inc., June 2020.
- Global Initiative for Asthma. Global Strategy for Asthma Management and Prevention, 2022. Available from: https://ginasthma.org/gina-reports/. Accessed February 23, 2023.
- Expert Panel Working Group of the National Heart, Lung, and Blood Institute (NHLBI) administered and coordinated National Asthma Education and Prevention Program Coordinating Committee (NAEPPCC). 2020 Focused Updates to the Asthma Management Guidelines: A Report from the National Asthma Education and Prevention Program Coordinating Committee Expert Panel Working Group. J Allergy Clin Immunol. 2020 Dec;146(6):1217-1270.
- Global Initiative for Chronic Obstructive Lung Disease. Global strategy for the diagnosis, management, and prevention of chronic obstructive lung disease. 2023 report. Available at: https://goldcopd.org/2023-gold-report-2/. Accessed February 23, 2023.
- Ipratropium/albuterol (Combivent® Respimat® Inhalation Spray) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., December 2021.
Angiotensin II Receptor Blockers
Angiotensin II Receptor Blockers - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Jan. 20, 2023
- Jan. 22, 2021
- Dec. 2018
- Dec. 2016
- Oct. 2014
- Dec. 2012
- March 2011
- April 2008
- July 2003
- July 2002
- Sept. 2001
- Sept. 2000
- July 1999
- June 1998
- July 1997
- Dec. 1996
- Initially developed
- April 1996
1. Dosage
1.1. Adults
Angiotensin II receptor blockers (ARBs) as monotherapy are FDA-approved for use in hypertension (all available ARBs), diabetic nephropathy (irbesartan, losartan), heart failure (candesartan, valsartan), stroke prophylaxis (losartan), cardiovascular risk reduction in patients unable to take angiotensin-converting enzyme (ACE) inhibitors (telmisartan), and post-myocardial infarction (valsartan). ARB combination therapy is FDA-approved for use in hypertension and stroke risk reduction in hypertensive patients as well as patients with left ventricular hypertrophy (Hyzaar®). Sacubitril/valsartan (Entresto®) combination therapy is FDA-approved to reduce the risk of cardiovascular death and hospitalization in chronic heart failure with reduced ejection fraction. The maximum recommended daily doses assigned to ARBs as monotherapy and combination therapy for adult patients are summarized in Tables 1 and 2. Patient profiles containing ARB dosage regimens exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
azilsartan (Edarbi®) | 40 mg, 80 mg tablets | hypertension | 80 mg/day |
candesartan (Atacand®, generics) | 4 mg, 8 mg, 16 mg, 32 mg tablets | heart failure | 32 mg/day |
hypertension | 32 mg/day | ||
irbesartan (Avapro®, generics) | 75 mg, 150 mg, 300 mg tablets | diabetic nephropathy | 300 mg/day |
hypertension | 300 mg/day | ||
losartan (Cozaar®, generics) | 25 mg, 50 mg, 100 mg tablets | diabetic nephropathy | 100 mg/day |
hypertension | 100 mg/day | ||
hypertension with left ventricular hypertrophy/ stroke prevention | 100 mg/day | ||
olmesartan (Benicar®, generics) | 5 mg, 20 mg, 40 mg tablets | hypertension | 40 mg/day |
telmisartan (Micardis®, generics) | 20 mg, 40 mg, 80 mg tablets | cardiovascular risk reduction/ stroke prevention/ myocardial infarction prevention | 80 mg/day |
hypertension | 80 mg/day | ||
valsartan (Diovan®, generics) | 40 mg, 80 mg, 160 mg, 320 mg tablets; 20 mg/5mL oral solution (generic only)* | heart failure | 320 mg/day in divided doses |
hypertension | 320 mg/day | ||
left ventricular dysfunction/failure after myocardial infarction | 320 mg/day in divided doses |
Legend:
- * Valsartan oral solution is not therapeutically equivalent to the tablet formulation and not substitutable on a mg-per-mg basis
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
amlodipine/ olmesartan (Azor, generics) | 5 mg/20 mg, 10 mg/20 mg, 5 mg/40 mg, 10 mg/40 mg tablets | hypertension | 10 mg/40 mg/day |
amlodipine/ valsartan (Exforge®, generics) | 5 mg/160 mg, 5 mg/320 mg, 10 mg/160 mg, 10 mg/320 mg tablets | hypertension | 10 mg/320 mg/day |
amlodipine/ valsartan/ hydrochlorothiazide (Exforge HCT, generics) | 5 mg/160 mg/12.5 mg, 10 mg/160 mg/12.5 mg, 5 mg/160 mg/25 mg, 10 mg/160 mg/25 mg, 10 mg/320 mg/25 mg tablets | hypertension | 10 mg/320 mg/25 mg/day |
azilsartan/ chlorthalidone (Edarbyclor) | 40 mg/12.5 mg, 40 mg/25 mg tablets | hypertension | 40 mg/25 mg/day |
candesartan/ hydrochlorothiazide (Atacand HCT, generic) | 16 mg/12.5 mg, 32 mg/12.5 mg, 32 mg/25 mg tablets | hypertension | 32 mg/25 mg/day |
irbesartan/ hydrochlorothiazide (Avalide, generic) | 150 mg/12.5 mg, 300 mg/12.5 mg tablets | hypertension | 300 mg/25 mg/day |
losartan/hydrochlorothiazide (Hyzaar®, generic) | 50 mg/12.5 mg, 100 mg/12.5 mg, 100 mg/25 mg tablets | hypertension | 100 mg/25 mg/day |
stroke prevention in hypertension with left ventricular hypertrophy | 100 mg/25 mg/day | ||
olmesartan/amlodipine/hydrochlorothiazide (Tribenzor®, generics) | 20 mg/5 mg/12.5 mg, 40 mg/5 mg/12.5 mg, 40 mg/5 mg/25 mg, 40 mg/10 mg/12.5 mg, 40 mg/10 mg/25 mg tablets | hypertension | 40 mg/10 mg/25 mg/day |
olmesartan/ hydrochlorothiazide (Benicar HCT®, generics) | 20 mg/12.5 mg, 40 mg/12.5 mg, 40 mg/25 mg tablets | hypertension | 40 mg/25 mg/day |
sacubitril/valsartan (Entresto®) | 24 mg/26 mg, 49 mg/51 mg, 97 mg/103 mg tablets | heart failure | 194 mg/206 mg/day in two divided doses |
telmisartan/ amlodipine (generics) | 40 mg/5 mg, 40 mg/10 mg, 80 mg/5mg, 80 mg/10 mg tablets | hypertension | 80 mg/10 mg/day |
telmisartan/ hydrochlorothiazide (Micardis HCT®, generics) | 40 mg/12.5 mg, 80 mg/12.5 mg, 80 mg/25 mg tablets | hypertension | 160 mg/25 mg/day |
valsartan/ hydrochlorothiazide (Diovan HCT®, generic) | 80 mg/12.5 mg, 160 mg/12.5 mg, 160 mg/25 mg, 320 mg/12.5 mg, 320 mg/ 25 mg tablets | hypertension | 320 mg/25 mg/day |
1.2. Pediatrics
Candesartan is FDA-approved to manage hypertension in children 1 to less than 17 years1,2,4. In 2021, the FDA expanded approval of valsartan to include patients 1 to 5 years for treatment of hypertension1,2,9. Losartan, olmesartan, and valsartan oral solution are FDA-approved to manage hypertension in pediatric patients 6 years of age and older1,2,6,7,10. Irbesartan is not FDA-approved for use in pediatric patients and has not demonstrated sustained efficacy in managing elevated blood pressure in patients 6 years and older1,2,5. Sacubitril/valsartan is FDA-approved to treat symptomatic heart failure with left ventricular systolic dysfunction in children 1 year and older1,2,12. Recommended dosages are summarized in Table 3. Dosages exceeding these recommendations will be reviewed.
Drug | Patient Characteristics | Maximum Daily Dosage |
---|---|---|
candesartan | 1 to less than 6 years of age: 6 to less than 17 years of age: Less than 50 kg: Greater than 50 kg: |
0.4 mg/kg/day 16 mg/day 32 mg/day |
losartan | 6 to 17 years of age: | 1.4 mg/kg/day to a maximum of 100 mg/day |
olmesartan | 6 to 16 years of age: Less than 35 kg: Greater than or equal to 35 kg: 17 years of age: |
20 mg/day 40 mg/day 40 mg/day |
valsartan (oral tablet) | 1 to 16 years of age: 17 years of age: |
4mg/kg/day to a maximum of 160 mg/day 320 mg/day |
valsartan (oral solution) | 6 to 16 years of age: 17 years of age: |
2.7 mg/kg/day in two divided doses to a maximum of 160 mg/day 320 mg/day |
Drug | Patient Characteristics | Maximum Daily Dosage |
---|---|---|
sacubitril/ valsartan (Entresto) | 1 to 17 years of age: Less than 40 kg: 40 to 49 kg: Greater than 50 kg: |
6.2mg/kg/day in two divided doses 144/156 mg/day in two divided doses 194/206 mg/day in two divided doses |
The safety and efficacy of azilsartan and telmisartan in pediatric patients have not been established1-3,8. The safety and efficacy of ARBs in combination with hydrochlorothiazide, aliskiren, or amlodipine in pediatric patients have not been established.
2. Duration of Therapy
There is no basis for limiting therapy duration for ARBs as reduction of cardiovascular mortality post-myocardial infarction, stroke risk reduction, managing hypertension, treating diabetic nephropathy, and managing heart failure requires chronic treatment.
3. Duplicative Therapy
Administration of two or more ARBs concurrently is not justified. Additional therapeutic benefit is not appreciated when multiple ARBs are utilized concomitantly. Patient profiles containing regimens comprised of two or more ARBs administered concurrently will be reviewed.
Recent studies have documented concurrent administration of ARBs and ACE inhibitors may result in an increased incidence of adverse effects (e.g., hypotension, hyperkalemia, syncope, renal failure) in patients with heart failure due to myocardial infarction or left ventricular dysfunction, as well as other patients at high risk for vascular events (e.g., diabetic patients) without added benefit. Additional studies have not documented significant benefit with ACE inhibitor-ARB combination therapy in managing hypertension or diabetic nephropathy. The American College of Cardiology/American Heart Association guidelines state that ARB-ACE inhibitor combination therapy may be considered in heart failure patients, not recently post myocardial infarction, who have not responded to target doses of an ACE inhibitor and beta blocker. The guidelines warn that routine combined use of an ACE inhibitor, an ARB, and an aldosterone antagonist is potentially harmful to patients with heart failure with a reduced ejection fraction. The 2017 focused update recommends an ACE inhibitor OR an ARB, but they do not explicitly address the use of both agents at the same time. Adjunctive administration of ARBs and ACE inhibitors should be considered cautiously, if at all, in these patient populations.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for ARBs are summarized in Table 4. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Table 4: ARB Drug-Drug Interactions
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
ARBs, nebivolol/ valsartan, sacubitril/valsartan | aliskiren | increased risk for renal impairment, hyperkalemia, and hypotension with adjunctive administration most likely due to additive effects; documented in ALTITUDE trial (type 2 diabetics with renal impairment had increased stroke, renal complications, hypotension when given ARBs and aliskiren concurrently) | combined administration in diabetics contraindicated by manufacturer; avoid combination in patients with CrCl less than 60 ml/min; use cautiously together in other patients and closely monitor renal function, serum potassium levels | contraindicated (DrugReax) - 2-major (CP) |
ARBs, nebivolol/ valsartan, sacubitril/valsartan | lithium | potential for enhanced lithium pharmacologic/adverse effects with combined administration; speculated that ARBs augment lithium reabsorption by decreasing lithium renal excretion | monitor patients for increased signs/symptoms of lithium toxicity and adjust lithium doses as necessary; may select alternate cardiovascular therapy that does not interact with lithium | major (DrugReax) - 3-moderate (CP) |
ARBs, nebivolol/valsartan, sacubitril/valsartan | nonsteroidal anti-inflammatory drugs | combined administration may increase risk for renal function deterioration and alter response to antihypertensives, especially in volume-depleted, elderly, or renally compromised patients, due to vasodilatory prostaglandin inhibition | monitor renal function, antihypertensive efficacy when combined administration required |
moderate (DrugReax) - 3-moderate (CP) |
ARBs, nebivolol/ valsartan, sacubitril/valsartan | potassium-sparing diuretics (e.g., amiloride, spironolactone, triamterene), potassium supplements | combined therapy may increase risk for hyperkalemia as ARBs reduce circulating aldosterone concentrations, resulting in potassium retention; elderly as well as patients with impaired renal function, diabetes, or high potassium diets may be at greater risk | measure serum potassium concentrations, monitor for signs and symptoms of hyperkalemia when administered concurrently, especially in patients with predisposing factors | moderate (DrugReax) - 2-major (CP) |
nebivolol/valsartan | CYP2D6 inhibitors (e.g., quinidine, fluoxetine, paroxetine) | adjunctive administration may result in enhanced nebivolol pharmacologic effects (e.g., reduced heart rate, hypotension) due to increased nebivolol serum levels as nebivolol is metabolized by CYP2D6 | combined use should be avoided; if concurrent administration necessary, monitor patients for unwanted pharmacologic/ adverse effects; adjust dosages as needed | major (DrugReax) - 2-major (CP) |
nebivolol/valsartan | hypotensive agents | concurrent administration may result in large reductions in sympathetic activity due to added beta-blocking activity; patients may have increased orthostasis and bradycardia | avoid nebivolol use with other beta blockers; withdraw nebivolol slowly over several days in patients prescribed clonidine concurrently | 2-major, 3-moderate (CP) |
nebivolol/valsartan | digitalis glycosides | co-administration may increase bradycardia risk as both nebivolol and digitalis glycosides reduce atrioventricular conduction and decrease heart rate | administer nebivolol with digitalis glycosides cautiously and monitor heart rate | moderate (DrugReax) - 3-moderate (CP) |
nebivolol/valsartan | calcium channel blockers | combined use of beta blockers like nebivolol with calcium channel blockers can be useful in some circumstances; however, combined administration may result in additive negative inotropic and/or chronotropic effects | if combined therapy needed, monitor heart rate and cardiac conduction; adjust doses as necessary | moderate (DrugReax) - 3-moderate (CP) |
Legend:
- * Clinical Pharmacology
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed October 10, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed October 10, 2022.
- Azilsartan tablets (Edarbi®) package insert. Arbor Pharmaceuticals, March 2020.
- Candesartan tablets (Atacand®) package insert. ANI Pharmaceuticals, Inc., June 2020.
- Irbesartan tablets (Avapro®) package insert. Sanofi-Aventis U.S., September 2021.
- Losartan tablets (Cozaar®) package insert. Organon, October 2021.
- Olmesartan tablets (Benicar®) package insert. Cosette Pharmaceuticals, Inc., February 2022.
- Telmisartan tablets (Micardis®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., July 2020.
- Valsartan tablets (Diovan®) package insert. Novartis Pharmaceuticals Corporation, April 2021.
- Valsartan oral solution package insert. Lifsa Drugs, April 2022.
- Losartan/hydrochlorothiazide tablets (Hyzaar®) package insert. Organon, June 2021.
- Sacubitril/valsartan tablets (Entresto®) package insert. Novartis Pharmaceuticals Corporation, February 2021.
- Amlodipine/Olmesartan tablets (Azor®) package insert. Cosette Pharmaceuticals, Inc., February 2022.
- Amlodipine/valsartan tablets (Exforge®) package insert. Novartis Pharmaceuticals Corporation, April 2021.
- Amlodipine/valsartan/hydrochlorothiazide tablets (Exforge HCT®) package insert. Novartis Pharmaceuticals Corportation, February 2021.
- Azilsartan/chlorthalidone tablets (Edarbyclor®) package insert. Arbor Pharmaceuticals, March 2020.
- Candesartan/hydrochlorothiazide tablets (Atacand HCT®) package insert. ANI Pharmaceuticals, Inc., May 2020.
- Irbesartan/hydrochlorothiazide tablets (Avalide®) package insert. Sanofi-Aventis U.S., September 2021.
- Olmesartan/amlodipine/hydrochlorothiazide tablets (Tribenzor®) package insert. Cosette Pharmaceuticals, Inc., February 2022.
- Olmesartan/hydrochlorothiazide tablets (Benicar HCT®) package insert. Cosette Pharmaceuticals, Inc., February 2022.
- Telmisartan/amlodipine tablets package insert. Torrent Pharmaceuticals, March 2022.
- Telmisartan/hydrochlorothiazide tablets (Micardis HCT®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., August 2020.
- Valsartan/hydrochlorothiazide tablets (Diovan HCT®) package insert. Novartis Pharmaceuticals Corporation, August 2020.
- The ONTARGET Investigators. Telmisartan, ramipril, or both in patients at high risk for vascular events. N Engl J Med. 2008;358:1547-59.
- Phillips CO, Kashani A, Ko DK, et al. Adverse effects of combination angiotensin II receptor blockers plus angiotensin-converting enzyme inhibitors for left ventricular dysfunction. A quantitative review of data from randomized clinical trials. Arch Intern Med. 2007;167:1930-6.
- Heidenreich P, Bozkurt B, Aguilar D, et al. 2022 AHA/ACC/HFSA Guideline for the Management of Heart Failure. J Am Coll Cardiol. 2022 May, 79 (17) e263–e421.
- Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol 2018;71:e127-e248.
- Amsterdam EA, Wenger NK, Brindis RG, et al. 2014 AHA/ACC guideline for the management of patients with non–ST-elevation acute coronary syndromes: a report of the American College of Cardiology/ American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2014;64:e139-e228.
Angiotensin-Converting Enzyme Inhibitors
Angiotensin II Receptor Blockers - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Initially developed
- June 1996
- Revision history
- Jan. 20, 2023
- Jan. 22, 2021
- Dec. 2018
- Dec. 2016
- Dec. 2014
- March 2013
- April 2011
- March 2011
- April 2008
- June 2003
- July 2002
- Sept. 2001
- June 2001
- June 2000
- July 1999
- June 1998
- June 1997
1. Dosage
1.1. Adults
Angiotensin-converting enzyme (ACE) inhibitors are FDA-approved for use in adults for diabetic nephropathy (captopril only), heart failure, hypertension, and improved survival/reduction of complications post-myocardial infarction. Combination therapy is FDA-approved for the management of hypertension. ACE inhibitors are available as monotherapy as well as combination products with a calcium channel blocker or hydrochlorothiazide. Adult maximum daily doses for ACE inhibitors are summarized in Tables 1 and 2 for mono- and combination therapy, respectively. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
benazepril (Lotensin®, generics) | 5 mg, 10 mg, 20 mg, 40 mg tablets | hypertension | 80 mg/day* |
captopril (generics) | 12.5 mg, 25 mg, 50 mg, 100 mg tablets | diabetic nephropathy/ proteinuria | 75 mg/day |
heart failure | 450 mg/day | ||
hypertension | 450 mg/day | ||
post-myocardial infarction | 150 mg/day | ||
enalapril (Vasotec®, generics; Epaned®) | 2.5 mg, 5 mg, 10 mg, 20 mg tablets; 1 mg/ml oral solution | asymptomatic left ventricular dysfunction | 20 mg/day |
heart failure | 40 mg/day | ||
hypertension | 40 mg/day | ||
fosinopril (generics) | 10 mg, 20 mg, 40 mg tablets | heart failure | 40 mg/day |
hypertension | 80 mg/day | ||
lisinopril (Zestril, generics; Qbrelis) | 2.5 mg, 5 mg, 10 mg, 20 mg, 30 mg, 40 mg tablets; 1 mg/ml oral solution | acute myocardial infarction | 10 mg/day |
heart failure | 40 mg/day | ||
hypertension | 80 mg/day | ||
moexipril (generics) | 7.5 mg, 15 mg tablets | hypertension | 30 mg/day |
perindopril (generics) | 2 mg, 4 mg, 8 mg tablets | hypertension |
16 mg/day elderly, renal function impairment: 8 mg/day |
myocardial infarction prophylaxis | 8 mg/day | ||
quinapril (Accupril®, generics) | 5 mg, 10 mg, 20 mg, 40 mg tablets | heart failure | 40 mg/day |
hypertension | 80 mg/day | ||
ramipril (Altace®, generics) | 1.25 mg, 2.5 mg, 5 mg, 10 mg capsules | heart failure (post myocardial infarction) | 10 mg/day |
hypertension | 20 mg/day | ||
myocardial infarction/ stroke prophylaxis in patients 55 years of age or older | 10 mg/day | ||
trandolapril (generics) | 1 mg, 2 mg, 4 mg tablets | hypertension | 8 mg/day |
post myocardial infarction (heart failure, left ventricular dysfunction) | 4 mg/day |
Legend:
- *Doses as high as 80 mg have provided increased response; however, experience with these higher dosages is limited.
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|
amlodipine/benazepril (Lotrel®, generics) |
|
10 mg/40 mg/day |
benazepril/hydrochlorothiazide (Lotensin HCT®, generics) |
|
20 mg/25 mg/day |
enalapril/hydrochlorothiazide (Vaseretic®, generics) |
|
20 mg/50 mg/day |
fosinopril/hydrochlorothiazide (generics) |
|
80 mg/50 mg/day |
lisinopril/hydrochlorothiazide (Zestoretic®, generics) |
|
80 mg/50 mg/day |
moexipril/hydrochlorothiazide (generics) |
|
30 mg/50 mg/day |
perindopril/amlodipine (Prestalia®) |
|
14 mg/10 mg/day |
quinapril/hydrochlorothiazide (Accuretic®, generics) |
|
40 mg/25 mg/day |
trandolapril/verapamil (generics) |
|
4 mg/240 mg/day |
1.2. Pediatrics
Select ACE inhibitors are FDA-approved for use to manage hypertension in pediatric patients. Maximum recommended ACE inhibitor doses for pediatric patients are summarized in Table 3. Dosages exceeding these recommendations will be reviewed.
Table 3: Pediatric Maximum Recommended Dosages for ACE inhibitors in Hypertension
Drug | Patient Characteristics | Maximum Daily Dosage |
---|---|---|
benazepril | 6 to 17 years of age | 0.6 mg/kg/day up to 40 mg/day |
enalapril | 1 month of age to 17 years of age | 0.58 mg/kg/day up to 40 mg/day |
fosinopril | 6 to 17 years of age (greater than 50 kg) | 40 mg daily |
lisinopril | 6 to 17 years of age | 0.6 mg/kg/day up to 40 mg/day |
2. Duration of Therapy
There is no basis for limiting ACE inhibitor therapy duration when utilized to manage hypertension, heart failure, and proteinuria associated with diabetic nephropathy, as these conditions require chronic treatment. The 2017 American College of Cardiology (ACC)/American Heart Association (AHA) focused update supports that ACE inhibitor use reduces cardiovascular morbidity and mortality in heart failure patients with reduced ejection fraction. Additionally, the ACC/AHA 2013 guidelines for ST-elevation myocardial infarction (STEMI) recommend immediate ACE inhibitor therapy within the first 24 hours) in patients with an anterior infarction, heart failure, or ejection fraction less than 0.40 who have no contraindications for ACE inhibitor use as well, as indefinite therapy with ACE inhibitors post-myocardial infarction for these patients. The ACC/AHA 2014 guidelines for unstable angina/non-STEMI patients recommend immediate ACE inhibitor therapy (within first 24 hours) in those with pulmonary congestion or left ventricular ejection fraction less than 0.40, and no hypotension or contraindications to ACE inhibitor therapy. These guidelines also recommend prolonged use of ACE inhibitors in patients with heart failure, left ventricular ejection fraction less than 0.40, hypertension, or diabetes mellitus without contraindications to ACE inhibitor therapy to reduce cardiovascular mortality.
3. Duplicative Therapy
The use of two or more ACE inhibitors concurrently is not justified. Additional therapeutic benefit is not realized when ACE inhibitors are used in combination. Patient profiles documenting the receipt of multiple ACE inhibitors will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for ARBs are summarized in Table 4. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Table 4: ACE Inhibitor Drug-Drug Interactions
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
ACE inhibitors | aliskiren | potential for additive hypotensive effects; increased hyperkalemia risk with this drug combination as both decrease serum aldosterone levels | administer drug combination cautiously; monitor serum potassium levels closely | moderate (DrugReax) 3-moderate (CP) |
ACE inhibitors | angiotensin II receptor blockers | potential for enhanced pharmacologic/ adverse effects (e.g., hypotension, hyperkalemia, changes in renal function) as both agents block renin-angiotensin-aldosterone system | avoid combination; if concurrent therapy necessary, monitor blood pressure, potassium and renal function and observe for adverse events | major (DrugReax) 2-major (CP) |
ACE inhibitors | antidiabetic agents | potential for enhanced hypoglycemic effects due to improved insulin sensitivity by ACE inhibitors | closely monitor blood glucose levels; reduced antidiabetic doses may be necessary | moderate (DrugReax) 3-moderate (CP) |
ACE inhibitors | azathioprine | increased risk of anemia, leukopenia with drug combination; mechanism unknown | avoid combination, if possible; if combined therapy necessary, monitor for myelosuppression | major (DrugReax) 2-major (CP) |
lisinopril | clozapine | potential for increased serum clozapine levels and enhanced pharmacologic, adverse effects; lisinopril may decrease clozapine renal elimination through unknown mechanism | assess clinical response, monitor serum clozapine levels if drug combination utilized | 3-moderate (CP) |
ACE inhibitors | cyclosporine | increased risk of acute renal failure, hyperkalemia with drug combination due to ACE inhibition, which causes decreased angiotensin II and aldosterone | closely monitor renal function and serum potassium levels | moderate (DrugReax) 3-moderate (CP) |
ACE inhibitors | entecavir | potential for increased entecavir serum levels and enhanced pharmacologic/ adverse effects due to ACE inhibitor effects on renal function |
monitor for increased adverse events if drug combination is administered | 3-moderate (CP) |
ACE inhibitors | eplerenone | increased risk of hyperkalemia as both agents decrease aldosterone levels | closely monitor serum potassium levels | 2-major (CP) |
ACE inhibitors | lithium | potential for increased serum lithium levels and enhanced pharmacologic, toxic effects, possibly due to decreased lithium clearance | avoid combination, if possible; if drug combination necessary, monitor serum lithium levels and observe for signs of lithium toxicity | moderate (DrugReax) 3-moderate (CP) |
ACE inhibitors | monoamine oxidase inhibitors | potential for additive hypotensive effects | monitor blood pressure closely, if drug combination utilized | 3-moderate (CP) |
ACE inhibitors | NSAIDs, salicylates, COX-2 inhibitors | potential for decreased antihypertensive effects, increased renal impairment risk (especially in patents dependent on renal prostaglandins for perfusion), with combined therapy due to inhibition of prostaglandin synthesis | monitor blood pressure, renal function, and clinical status if drug combination utilized; low-dose aspirin less likely to reduce ACE inhibitor antihypertensive, cardioprotective effects | moderate (DrugReax) 3-moderate (CP) |
ACE inhibitors | potassium-sparing diuretics, potassium salts | ACE inhibitors reduce aldosterone concentrations, resulting in increased potassium concentrations; increased hyperkalemia risk with drug combination due to additive pharmacologic effects | monitor serum potassium levels and signs/symptoms of hyperkalemia if drug combination administered; patients with renal failure, diabetes, advanced age may be at increased risk; use combination cautiously in heart failure patients | major (DrugReax) 2-major (CP) |
ACE inhibitors | pregabalin | combined therapy may increase risk of developing life-threatening angioedema with respiratory compromise | observe patients closely if drug combination utilized | 2-major (CP) |
ACE inhibitors | sacubitril/ valsartan (Entresto®) | concurrent administration may result in angioedema due to inhibition of bradykinin degradation | avoid drug combination; monitor blood pressure, renal function, and electrolytes if combined therapy is utilized | contraindicated (DrugReax) 1-contraindicated (CP) |
ACE inhibitors | trimethoprim | co-administration may increase risk of additive hyperkalemia due to decreased aldosterone synthesis by ACE inhibitor and potassium-sparing effect on distal nephron by trimethoprim | monitor serum potassium levels and monitor patients for signs/symptoms of hyperkalemia if drug combination administered | moderate (DrugReax) 2-major (CP) |
trandolapril/verapamil | flibanserin (Addyi®) | verapamil (CYP3A4 inhibitor) and flibanserin (CYP3A4 substrate) administered concurrently may result in increased serum flibanserin levels with resultant severe hypotension, syncope, sedation | avoid combined use; if adjunctive use necessary, discontinue CYP3A4 inhibitor for at least 2 weeks before initiating/reinitiating flibanserin therapy, or discontinue flibanserin at least 2 days before starting/restarting CYP3A4 inhibitor therapy | contraindicated (DrugReax) 1-severe (CP) |
trandolapril/verapamil | colchicine | colchicine is p-glycoprotein (P-gp) and CYP3A4 substrate; adjunctive use may result in increased colchicine serum concentrations and enhanced pharmacologic/ adverse effects due to P-gp and CYP3A4 inhibition by verapamil | avoid concurrent use; if combined use necessary, observe for serious colchicine adverse effects, including neuromuscular toxicity, and adjust colchicine dosages | contraindicated (DrugReax) 2-major (CP) |
trandolapril/verapamil | dofetilide (Tikosyn®) | concomitant administration may result in increased cardiotoxicity risk (e.g., torsades de pointes, QT interval prolongation, cardiac arrest) due to increased dofetilide absorption/serum levels | combined use is contraindicated | contraindicated (DrugReax) 1-severe (CP) |
Legend:
- *Clinical Pharmacology
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed October 10, 2022.
- IMB Micromedex DRUGDEX (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed October 10, 2022.
- Benazepril tablets (Lotensin) package insert. Validus Pharmaceuticals, January 2019.
- Benazepril tablets package insert. Amneal Pharmaceuticals, December 2020.
- Captopril tablets package insert. Camber Pharmaceuticals, Inc., July 2021.
- Enalapril tablets (Vasotec) package insert. Bausch Health US, December 2020.
- Enalapril oral solution (Epaned) package insert. Azurity Pharmaceuticals, Inc., March 2020.
- Fosinopril tablets package insert. Bryant Ranch Prepack, February 2022.
- Lisinopril tablets (Zestril) package insert. Almatica Pharma, March 2020.
- Lisinopril oral solution (Qbrelis) package insert. Azurity Pharmaceuticals, Inc., March 2020.
- Moexipril tablets package insert. Glenmark Pharmaceuticals, Inc., August 2021.
- Perindopril tablets package insert. Aurobindo Pharma, September 2019.
- Quinapril tablets (Accupril) package insert. Parke-Davis Division of Pfizer, Inc., May 2022.
- Ramipril capsules (Altace) package insert. Pfizer Laboratories Division of Pfizer, Inc., February 2022.
- Trandolapril tablets package insert. Aurobindo Pharma, July 2022.
- Benazepril/amlodipine capsules (Lotrel) package insert. Novartis Pharmaceuticals Corp., March 2022.
- Benazepril/amlodipine capsules package insert. Lupin Pharmaceuticals, Inc., August 2021.
- Benazepril/hydrochlorothiazide tablets (Lotensin HCT) package insert. Validus Pharmaceuticals, October 2020.
- Enalapril/hydrochlorothiazide tablets (Vaseretic) package insert. Bausch Health US, August 2020.
- Enalapril/hydrochlorothiazide tablets package insert. Bryant Ranch Prepack, December 2021.
- Fosinopril/hydrochlorothiazide tablets package insert. Aurobindo Pharma, February 2022.
- Lisinopril/hydrochlorothiazide tablets (Zestoretic) package insert. Almatica Pharma, July 2021.
- Perindopril/amlodipine tablets (Prestalia) package insert. Adhera Therapeutics, Inc., October 2019.
- Quinapril/hydrochlorothiazide tablets (Accuretic) package insert. Parke-Davis Division of Pfizer, December 2021.
- Trandolapril/verapamil tablets package insert. Glenmark Pharmaceuticals, Inc., September 2019.
- Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol 2018;71:e127-e248.
- O’Gara PT, Kushner FG, Ascheim DD, et al. 2013 ACCF/AHA guideline for the management of ST-elevation myocardial infarction: a report of the American College of Cardiology Foundation/ American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2013;61:e78-e140.
- Amsterdam EA, Wenger NK, Brindis RG, et al. 2014 AHA/ACC guideline for the management of patients with non–ST-elevation acute coronary syndromes: a report of the American College of Cardiology/ American Heart Association Task Force on Practice Guidelines. J Am Coll Cardiol. 2014;64:e139-e228.
- Heidenreich P, Bozkurt B, Aguilar D, et al. 2022 AHA/ACC/HFSA Guideline for the Management of Heart Failure. J Am Coll Cardiol. 2022 May, 79 (17) e263–e421.
Anti-depressants, oral (other)
Anti-depressants, oral (other) - Index
Medications listed in the tables and non-FDA approved indications that may be included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 28, 2023
- April 23, 2021
- March 2019
- March 2017
- April 2015
- March 2015
- June 2013
- July 2011
- Sep. 2009
- Aug. 2009
- March 2009
- Dec. 2003
- Nov. 2002
- Oct. 2002
- Nov. 2001
- Sept. 2001
- Oct. 2000
- Jan. 2000
- Oct. 1999
- Oct. 1998
- Sept. 1997
- Dec. 1996
- Initially developed
- Jan. 1995
1. Dosage
1.1. Adults
The FDA requires that all antidepressant drugs display a black box warning describing the potential for increased suicidal thinking and behavior when prescribed to young adults (18 to 24 years of age) with major depressive disorder (MDD) and other psychiatric disorders. In short-term clinical trials, the suicide risk was increased in young adults managed with antidepressants compared to those receiving placebo in the first few months of treatment. Suicide risk was not shown to increase in adults over 24 years of age, and patients 65 years of age and older manifested a decreased suicide risk. Patients of all ages prescribed antidepressant drugs should be closely monitored for changes in behavior, clinical worsening, or suicidality. When treating elderly patients, caution is indicated when administering these medications due to risk of hyponatremia 1-43.
Nonselective serotonin reuptake inhibitor monotherapy antidepressant drugs are FDA-approved for use in MDD, obsessive-compulsive disorder (OCD), generalized anxiety disorder (GAD), social anxiety disorder (SAD), and panic disorder (PD). Additionally, bupropion is FDA-approved for seasonal affective disorder (AD) and smoking cessation (SC), milnacipran is FDA-approved for fibromyalgia (F) management, and duloxetine is FDA-approved for neuropathic pain (NP), F, and chronic musculoskeletal pain in adults (CMP). Recently, doxepin has received FDA approval for insomnia in adults (I). Vilazodone, a selective serotonin reuptake inhibitor (SSRI) as well as a partial agonist at the 5-HT1A receptor, is FDA-approved for MDD. Levomilnacipran (Fetzima®), a serotonin and norepinephrine reuptake inhibitor (SNRI) and an enantiomer of milnacipran, has also been FDA-approved for use in treating MDD. The antidepressant agent, vortioxetine, an SSRI that also acts as an agonist at 5-HT1A receptors and an antagonist at 5-HT3 receptors, has gained FDA approval to manage MDD. Combination therapy is FDA-approved for severe depression, and moderate anxiety/agitation/depression 1-43.
Maximum recommended daily doses for antidepressant drugs in adults, including the elderly population, are summarized in Tables 1-6. Maximum recommended dosages for antidepressant combination therapy are summarized in Table 7. However, in all patients, the lowest effective antidepressant dose should be utilized to minimize unwanted adverse effects. Patient profiles with antidepressant dosages exceeding these recommendations will be reviewed.
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
amitriptyline | generics: 10 mg, 25 mg, 50 mg, 75 mg, 100 mg, 150 mg tablets | MDD |
|
amoxapine (generics) | 25 mg, 50 mg, 100 mg, 150 mg tablets | MDD |
|
clomipramine (Anafranil®, generics) | 25 mg, 50 mg 75 mg capsules | OCD |
|
desipramine (generics) | 10 mg, 25 mg, 50 mg, 75 mg, 100 mg, 150 mg tablets | MDD |
|
doxepin (generics) | 10 mg, 25 mg, 50 mg, 75 mg, 100 mg, 150 mg capsules; 10 mg/mL oral concentrate | MDD |
|
|
|||
|
|||
|
|||
doxepin (Silenor®) | 3 mg, 6 mg tablets | I |
|
imipramine (Tofranil®, generics) | generics:10 mg, 25 mg, 50 mg tablets; 75 mg 100 mg, 125 mg, 150 mg capsules Tofranil®: 10 mg, 25 mg tablets |
MDD |
|
imipramine pamoate (generics) | generics: 10 mg, 25 mg, 50 mg tablets; Tofranil®: 10 mg, 25 mg tablets | ||
nortriptyline (Pamelor®, generics) | 10 mg, 25 mg, 50 mg, 75 mg capsules; 10 mg/5 mL oral solution (generic only) | MDD |
|
protriptyline (generics) | 5 mg, 10 mg tablets | MDD |
|
trimipramine (generics) | 25 mg, 50 mg 100 mg capsules | MDD |
|
Legend:
- I = insomnia
- MDD = major depressive disorder
- OCD = obsessive-compulsive disorder
- * The maximum amoxapine dose in elderly patients and in most adults is 300 mg/day. Those patients Less than or equal to 65 years of age who have not responded adequately to a two-week trial utilizing 300 mg/day may receive a trial of 400 mg amoxapine per day.
- #Doxepin is also recommended for depression and anxiety associated with psychoneurosis, alcoholism, and organic disease.
- ^ May increase to 150 mg/day, if needed; doses over 200 mg are not recommended; doses usually do not exceed 100 mg/day in geriatric patients.
- ** When doses above 100 mg daily are administered, plasma levels of nortriptyline should be maintained in the optimum range of 50 ng/mL to 150 ng/mL.
- + Elderly patients should usually be given lower than average protriptyline doses. Elderly patients receiving protriptyline doses greater than 20 mg daily should receive close cardiac monitoring.
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
mirtazapine (Remeron®, generics) | 7.5 mg, 15 mg, 30 mg, 45 mg tablets; 15 mg, 30 mg, 45 mg orally disintegrating tablets | MDD |
|
Legend:
- MDD = major depressive disorder
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
isocarboxazid (Marplan®) | 10 mg tablets | MDD |
|
phenelzine (Nardil®, generics) | 15 mg tablets | Depression* |
|
selegiline (EMSAM®) transdermal patch | 6 mg/ 24 hours, 9 mg/ 24 hours, 12 mg/ 24 hours transdermal patch | MDD |
|
tranylcypromine (Parnate®, generics) | 10 mg tablets | MDD |
|
Legend:
- MDD = major depressive disorder
- ▪ Use MAOIs cautiously in elderly patients due to a greater risk of morbidity if hypertensive crisis develops.
- * Phenelzine has been found to be effective in depressed patients clinically characterized as "atypical,” “nonendogenous,” or “neurotic.”
- ^ Indicated for MDD in patients who have not responded adequately to other antidepressants.
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
desvenlafaxine (Pristiq®, generics) | 25 mg, 50 mg 100 mg 24-hour ER tablets | MDD |
|
duloxetine (Cymbalta®, Drizalma Sprinkle®, generics) | 30 mg, 60 mg delayed-release capsules Generic only: 20, 40 mg |
CMP, F, NP |
|
GAD, MDD |
|
||
levomilnacipran (Fetzima®) | 20 mg, 40 mg 80 mg, 120 mg 24-hour ER capsules | MDD |
|
milnacipran (Savella®)12.5 mg, 25 mg, 50 mg 100 mg tablets | 12.5 mg, 25 mg, 50 mg 100 mg tablets | F |
|
venlafaxine (generics) | 25 mg, 37.5 mg, 50 mg, 75 mg, 100 mg IR tablets | MDD |
|
venlafaxine (Effexor XR®, generics) | 37.5 mg, 75 mg, 150 mg 24-hour ER capsules |
|
|
SAD |
|
||
venlafaxine (generics) | 37.5 mg, 75 mg, 150 mg, 225 mg 24-hour ER tablets | MDD |
|
SAD |
|
Legend:
- CMP = chronic musculoskeletal pain
- F = fibromyalgia
- GAD = generalized anxiety disorder
- MDD = major depressive disorder
- NP = neuropathic pain
- PD = panic disorder
- SAD = social anxiety disorder
- ^ In studies, desvenlafaxine doses up to 400 mg per day were no more effective than 50 mg daily doses and were associated with increased adverse events.
- # Duloxetine doses of 120 mg, while effective, are no more effective than 60 mg daily doses.
- ~ The maximum recommended venlafaxine dose is 225 mg/day for moderately depressed outpatients. Dosages Greater than 225 mg/day in moderately depressed outpatients do not demonstrate additional efficacy. However, more severely depressed inpatients may respond to venlafaxine dosages up to 375 mg/day.
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
vilazodone (Viibryd®) | 10 mg, 20 mg, 40 mg tablets | MDD |
|
vortioxetine (Trintellix®) | 5 mg, 10 mg, 20 mg tablets | MDD |
|
Legend:
- MDD = major depressive disorder
-----
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
bupropion (generics) | 75 mg, 100 mg IR tablets | MDD |
|
bupropion (Forfivo XL®, Wellbutrin XL®, generics) | Wellbutrin XL®, generics: 150 mg, 300 mg 24-hour ER tablets Forfivo XL®, generics: 450 mg 24-hour-ER tablets |
MDD |
|
bupropion (Wellbutrin SR®, generics) | 100 mg, 150 mg, 200 mg 12-hour ER tablets | MDD |
|
bupropion (Aplenzin®) | 174 mg, 348 mg, 522 mg 24-hour ER tablets | MDD |
|
AD |
|
||
bupropion (Wellbutrin XL®, generics) | Wellbutrin XL®, generics: 150 mg, 300 mg 24-hour ER tablets | AD |
|
bupropion (generics) | 150 mg 12-hour ER tablets | SC |
|
nefazodone (generics) | 50 mg, 100 mg, 150 mg, 200 mg, 250 mg tablets | MDD |
|
trazodone (generics) | 50 mg, 100 mg, 150 mg, 300 mg IR tablets | MDD |
|
Legend:
- AD = seasonal affective disorder
- MDD = major depressive disorder
- SC = smoking cessation
Treatment Indication | Drug Name | Available Dosage Strengths | Maximum Recommended Dosage |
---|---|---|---|
severe depression | chlordiazepoxide/ amitriptyline (generics) | 5 mg/ 12.5 mg, 10 mg/25 mg tablets | 60 mg/150 mg/day * |
anxiety/agitation/depression | perphenazine/ amitriptyline (generics) | 2 mg/10 mg, 4 mg/10 mg, 2 mg/25 mg, 4 mg/25 mg, 4 mg/50 mg tablets | 16 mg/200 mg/day |
Legend:
- * Lower chlordiazepoxide/amitriptyline dosages and close monitoring are recommended in elderly patients due to greater risks for impaired cognitive/motor function.
1.2. Pediatrics
The FDA requires that all antidepressant drugs display a black box warning describing the potential for increased suicidal thinking and behavior when prescribed to children and adolescents with MDD and other psychiatric disorders. In short-term clinical trials, the suicide risk occurred twice as frequently with antidepressant-treated children/adolescents compared to those receiving placebo (4% vs. 2%, respectively) in the first few months of treatment. Pediatric patients prescribed antidepressant drugs should be closely monitored for changes in behavior.
Maximum recommended doses for non-SSRI antidepressants approved for use as monotherapy in pediatric patients are summarized in Tables 8-10. An additional column reflecting literature-based dosing included in the Texas Health and Human Services Psychotropic Medication Utilization Parameters for Children and Youth in Texas Public Behavioral Health (6th Version) is included in Tables 8-11. Dosages exceeding these recommendations will be reviewed.
Drug Name | Available Dosage Strengths | Treatment Indication | Literature Based Maximum Dosage | FDA Approved Maximum Recommended Dosage |
---|---|---|---|---|
amitriptyline (generics) | generics: 10 mg, 25 mg, 50 mg, 75 mg, 100 mg, 150 mg tablets | MDD | Reviewed but not included/ recommended |
|
clomipramine (Anafranil®, generics) | 25 mg, 50 mg 75 mg capsules | OCD | Age 10-17 years: 3 mg/kg/day or 200 mg/ day, whichever is less |
|
desipramine (Norpramin®, generics) | generics: 10 mg, 25 mg, 50 mg, 75 mg, 100 mg, 150 mg tablets Norpramin®: 10 mg, 25 mg tablets |
aa | Reviewed but not included/ recommended |
|
imipramine (Tofranil®, generics) | generics:10 mg, 25 mg, 50 mg tablets; Tofranil®: 10 mg, 25 mg, 50 mg tablets | MDD | Reviewed but not included/ recommended |
|
nocturnal enuresis |
|
|||
nortriptyline (Pamelor®, generics) | 10 mg, 25 mg, 50 mg, 75 mg capsules; 10 mg/5 mL oral solution (generic only) | MDD | Reviewed but not included/ recommended |
|
protriptyline | 5 mg, 10 mg tablets | MDD | Reviewed but not included/ recommended |
|
trimipramine (generics) | 25 mg, 50 mg 100 mg capsules | MDD | Reviewed but not included/recommended |
|
Legend:
- MDD = major depressive disorder
- OCD = obsessive-compulsive disorder
- ^ In general, lower dosages are recommended for these patients. Ten milligrams 3 times daily with 20 mg at bedtime may be satisfactory in adolescent and elderly patients who do not tolerate higher dosages.
- # imipramine pamoate is not approved for pediatric use
- * Adolescents should usually be given lower than average protriptyline doses
Drug Name | Available Dosage Strengths | Treatment Indication | Literature Based Maximum Dosage | FDA Approved Maximum Recommended Dosage |
---|---|---|---|---|
isocarboxazid (Marplan®) | 10 mg tablets | MDD | Not reviewed |
|
selegiline (EMSAM®) transdermal patch | 6 mg/ 24 hours, 9 mg/ 24 hours, 12 mg/ 24 hours transdermal patch | MDD | Age ≥ 12 years: 12 mg per 24 hours | Not approved for pediatric use |
Legend:
- MDD = major depressive disorder
Drug Name | Available Dosage Strengths | Treatment Indication | Literature Based Maximum Dosage | FDA Approved Maximum Recommended Dosage | |
---|---|---|---|---|---|
desvenlafaxine (Pristiq®, generics) | 25 mg, 50 mg 100 mg 24-hour ER tablets | Major depressive disorder | Age 7-17 years: 50 mg/day | Not approved for pediatric use | |
duloxetine (Cymbalta®, generics) | 20 mg, 30 mg, 40 mg 60 mg delayed-release capsules | General anxiety disorder | Age 7-17 years: 120 mg/day |
|
|
Fibromyalgia |
|
Drug Name | Available Dosage Strengths | Treatment Indication | Literature Based Maximum Dosage | FDA Approved Maximum Recommended Dosage |
---|---|---|---|---|
mirtazapine (Remeron®, generics) | 7.5 mg, 15 mg, 30 mg, 45 mg tablets; 15 mg, 30 mg, 45 mg orally disintegrating tablets | Major depressive disorder | Age greater than or equal to 3 years: 45 mg/day | Not approved for pediatric use |
1.3. Renal Impairment
Many antidepressants do not require significant dosage modifications in renal impairment. However, dosage guidelines for select non-SSRI antidepressants in renal impairment are available. Tables 12-15 summarizes dosage modifications and/or restrictions for specific non-SSRI antidepressant medications.
Drug Name | Dosage in Renal Impairment |
---|---|
Mirtazapine | Initiate with the lowest dosage and titrate slowly as renal clearance reduced by approximately 30% in moderate (Creatinine clearance 11-39 ml/min) and 50% in severe (Creatinine clearance less than 10 ml/min) renal impairment |
Drug Name | Dosage in Renal Impairment |
---|---|
Isocarboxazid | Contraindicated in severe renal impairment; use cautiously in moderate renal impairment due to potential accumulation of active metabolites |
Phenelzine | Contraindicated for use in severe renal impairment |
Drug Name | Dosage in Renal Impairment |
---|---|
Desvenlafaxine |
|
Duloxetine |
|
Levomilnacipran |
|
Milnacipran |
|
Venlafaxine |
|
Legend:
- CrCl = creatinine clearance
- ESRD = end-stage renal disease
- ER = extended-release
- IR = immediate-release
Drug Name | Dosage in Renal Impairment |
---|---|
Bupropion | Administer cautiously in renal impairment due to potential for accumulation and risk for adverse events (e.g., seizures); consider reduced dosage/dosage frequency Forfivo™ XL: not recommended in renal impairment as no lower dose available |
Trazodone | Use cautiously in patients with renal impairment |
Legend:
- CrCl = creatinine clearance
2. Duration of Therapy
There is no basis for limiting antidepressant therapy duration when used to manage MDD, OCD, GAD, PTSD, or PD as these disorders can all be characterized as chronic conditions. NP, CMP, and F are considered chronic conditions and may be used for the duration of the condition.
While clinical trials have not evaluated vilazodone use in MDD beyond 52 weeks, it is accepted that vilazodone therapy may exceed 52 weeks, as acute episodes of MDD require extended (several months or longer) drug therapy. Patients should be periodically assessed for continued need for vilazodone treatment33.
Duloxetine treatment duration in diabetic NP lasting greater than 6 months has not been evaluated in clinical trials. Additionally, duloxetine efficacy in CMP beyond 13 weeks has not been established in clinical trials.
Duloxetine use lasting greater than 12 months as F therapy has not been evaluated in clinical trials. Recent clinical trials have evaluated milnacipran use for up to one year in F with sustained results in pain management. F patients should be routinely evaluated for treatment effectiveness, with milnacipran therapy tapered and discontinued if positive treatment outcomes are no longer present.
3. Duplicative Therapy
The concurrent use of two antidepressant medications with the same spectrum of activity may not be justified. The concomitant use of two cyclic antidepressants, two MAOIs or two SNRIs will be reviewed.
The concurrent use of three or more antidepressants is not justified. Therefore, the adjunctive use of three or more antidepressants, including MAOIs, SNRIs, SSRIs, cyclic antidepressants, trazodone, bupropion, and nefazodone, will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. The following drug-drug interactions summarized in Table 16 are considered clinically relevant for antidepressants. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
bupropion | systemic corticosteroids | concurrent administration may increase seizure risk as both agents lower seizure threshold | reduce initial doses and titrate doses upward slowly; monitor closely for seizure activity | Moderate (CP) |
cyclic antidepressants, SNRIs, bupropion, levomilnacipran, milnacipran, nefazodone, trazodone, vilazodone, vortioxetine | monoamine oxidase inhibitors (MAOIs) | increased risk of serotonin syndrome (e.g., mental status changes, hyperpyrexia, restless, shivering, hypertonia, tremor) due to serotonin metabolism inhibition by monoamine oxidase | allow 14 days after MAOI discontinuation before initiating other antidepressant therapy; wait 5 weeks after discontinuing fluoxetine before initiating MAOIs | Contraindicated (CP) |
MAOIs | select CNS stimulants (amphetamines, atomoxetine, methylphenidate, and derivatives) | increased risk of hypertensive crisis due to additive effects on catecholamine neurotransmitters | avoid concurrent use; allow two weeks between discontinuing MAOIs and initiating CNS stimulant | contraindicated (CP) |
MAOIs | cyclobenzaprine | increased risk of hyperpyretic crisis, seizures, and death potentially due to additive adrenergic activity | avoid concurrent use; allow two weeks between discontinuing MAOIs and initiating cyclobenzaprine therapy | contraindicated (CP) |
MAOIs | morphine | increased risk of hypotension and enhanced CNS/respiratory depression as MAOIs amplify morphine pharmacologic effects | avoid concurrent use; allow two weeks between discontinuing morphine and initiating MAOI therapy | contraindicated (CP) |
MAOIs | sympathomimetics | increased risk of hypertensive crisis as MAOIs increase norepinephrine availability at neuronal storage sites as well as enhance adrenergic effects | avoid concurrent use; allow two weeks between discontinuing sympathomimetics and initiating MAOI therapy | contraindicated (CP) |
nefazodone (NZD) | carbamazepine | reduced NZD serum levels/antidepressant effects and increased carbamazepine (CBZ) serum levels and potential for toxicity due to induced CYP3A4-mediated NZD metabolism and inhibited CYP3A4-mediated CBZ metabolism | avoid concurrent use | contraindicated (CP) |
NZD | pimozide | enhanced pimozide pharmacologic effects and potential for cardiovascular toxicity due to NZD-mediated CYP3A4 inhibition | avoid concurrent use | contraindicated (CP) |
SNRIs, vilazodone, vortioxetine | anticoagulants | co-administration may increase bleeding risk due to impaired platelet aggregation most likely resulting from platelet serotonin depletion | patients should be monitored for signs/symptoms of bleeding (including INR) if combined therapy necessary | moderate (CP) |
SNRIs, vortioxetine, vilazodone | antiplatelet agents | adjunctive administration may increase bleeding risk due to impaired platelet aggregation most likely resulting from platelet serotonin depletion | patients should be monitored for signs/symptoms of bleeding if combined therapy necessary | moderate (CP) |
SNRIs | drugs with serotonergic properties (e.g., antipsychotics, dextromethorphan, tramadol, triptans) or dopamine antagonist properties (e.g., phenothiazines, metoclopramide) | combined use may increase risk of serotonin syndrome or neuroleptic malignant syndrome (NMS) | cautiously administer concurrently and closely observe for signs/symptoms of serotonin syndrome or NMS, especially with treatment initiation or dosage increases | contraindicated (CP) |
Vilazodone Vortioxetine |
drugs with serotonergic properties (e.g., antipsychotics, dextromethorphan, tramadol, triptans) or dopamine antagonist properties (e.g., phenothiazines, metoclopramide) | combined use may increase risk of serotonin syndrome or neuroleptic malignant syndrome (NMS). Platelet aggregation may be impaired due to platelet serotonin depletion, possibly increasing the risk of a bleeding complication | cautiously administer concurrently and closely observe for signs/symptoms of serotonin syndrome or NMS, especially with treatment initiation or dosage increases | Moderate (CP) |
SNRIs, vortioxetine | tramadol | increased risk of serotonin syndrome and seizures due to increased nervous system serotonin concentrations (additive effects on serotonin, SSRI inhibition of CYP2D6-mediated tramadol metabolism) as well as potential reduced seizure threshold with SNRIs, SSRIs | avoid concurrent use | Moderate (CP) |
TCAs | pimozide | increased risk of pimozide toxicity including cardiotoxicity (QT prolongation) due to elevated plasma concentrations or additive effects on QT interval | avoid concurrent use | contraindicated (CP) |
TCAs, duloxetine | select phenothiazines (thioridazine) | increased risk of somnolence, bradycardia and serious cardiotoxicity (QT prolongation, torsades de pointes) due to potential additive effects on QT interval prolongation; increased thioridazine serum concentrations/decreased thioridazine elimination and potential for serious cardiac arrhythmias due to CYP2D6 inhibition by duloxetine, fluoxetine, or paroxetine | avoid concurrent use; if adjunctive use necessary, monitor for increased pharmacologic/toxic effects; adjust dose as necessary | contraindicated (CP) |
vilazodone | CYP3A4 inducers | combined administration may result in reduced vilazodone serum levels and decreased pharmacologic effects, as vilazodone is primarily metabolized by CYP3A4 | monitor for decreased pharmacologic effects and adjust doses as necessary | moderate (CP) |
vilazodone | CYP3A4 inhibitors | adjunctive administration may result in increased vilazodone serum levels and enhanced pharmacologic/adverse effects, as vilazodone is primarily metabolized by CYP3A4 | monitor for increased pharmacologic/adverse effects; reduce vilazodone dose to 20 mg daily when prescribed concurrently with strong (e.g., ketoconazole) CYP3A4 inhibitors; reduce vilazodone dose to 20 mg daily when co-administered with moderate (e.g., erythromycin) CYP3A4 inhibitors and intolerable adverse effects are present | major (CP) |
vortioxetine | strong CYP2D6 inducers | combined administration may result in reduced vortioxetine serum levels and decreased pharmacologic effects, as vortioxetine is primarily metabolized by CYP2D6 as well as QTC prolongation with concurrent use of Thioridazine | monitor for decreased pharmacologic effects; increase the vortioxetine dose (by no more than 3x the recommended dose) if strong CYP2D6 inducer administered concurrently for more than 14 days; reduce vortioxetine dose to original dose within 14 days of CYP2D6 inducer discontinuation | major (CP) |
vortioxetine | strong CYP2D6 inhibitors | adjunctive administration may result in increased vortioxetine serum levels and enhanced pharmacologic/adverse effects, as vortioxetine is primarily metabolized by CYP2D6 | Reduce vortioxetine dose by 50% when administered concurrently with strong CYP2D6 inhibitor; reduce vortioxetine dose to original dose when CYP2D6 inhibitor discontinued | major (CP) |
Amitripityline/Perphenazine | cisapride | increased risk of QT prolongation and increased risk for arrythmia | avoid concurrent use | Contraindicated (CP) |
Legend:
- #CP = Clinical Pharmacology
- CNS = central nervous system
- SNRIs = serotonin and norepinephrine reuptake inhibitors
- TCAs = tricyclic antidepressants
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: February 22, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed February 22, 2021.
- Amitriptyline HCL package insert. Advanced Rx, October 27, 2022.
- Amitriptyline (Elavil) package insert. Thompson Medical Solutions LLC, April 13, 2016.
- Amoxapine tablets package insert. Actavis Pharma, Inc., February 28, 2015
- Clomipramine package insert. Amneal Pharmaceuticals NY LLC, October 26, 2021.
- Clomipramine (Anafranil) package insert. SpecGx LLC, February 17, 2020.
- Desipramine package insert. Amneal Pharmaceuticals NY LLC, October 26, 2021.
- Desipramine (norpramine) package insert. Validus Pharmaceuticals LLC, January 26, 2021.
- Doxepin package insert. Strides Pharma Science Limited, September 7, 2022.
- Doxepin (Silenor) package insert. Currax Pharmaceuticals LLC, November 2, 2022.
- Imipramine tablets package insert. Carilion Materials Management, November 22, 2011.
- Imipramine (Tofranil) capsules package insert. Thompson Medical Solutions LLC, December 23, 2016.
- Imipramine capsules package insert. Hikma Pharmaceuticals USA Inc, October 11th, 2021
- Nortriptyline package insert. Direct Rx, October 5, 2022.
- Nortriptyline (Pamelor) package insert. SpecGc LLC, February 17, 2020.
- Protriptyline package insert. Epic Pharma, LLC, June 10, 2020.
- Trimipramine package insert. Breckenridge Pharmaceutical, Inc., October 21, 2022.
- Mirtazapine package insert. Apotex Corp., January 30, 2023.
- Mirtazapine (Remeron) package insert. Organon LLC., June 1, 2022.
- Isocarboxazid (Marplan) package insert. Validus Pharmaceuticals LLC, January 28, 2022.
- Phenelzine package insert. Novel Laboratories, Inc.,September 30, 2014.
- Phenelzine (Nardil) package insert. Park Davis Div of Pfizer Inc, December 9, 2020.
- Selegiline (Emsam) package insert. Mylan Specialty L.P., May 15, 2020.
- Tranylcypromine (parnate) package insert. Actavis Pharma, Inc., Augist 27, 2021.
- Desvenlafaxine (Pristiq) package insert. Wyeth Pharmaceuticals LLC, March 25, 2022.
- Duloxetine(Cymbalta) package insert. Eli Lilly and Company, September 20, 2021.
- Duloxetine(Drizalma) package insert. Sun Pharmaceutical Industries, Inc., July 28, 2021.
- Levomilnacipran(Fetzima) package insert. Allergan, Inc., September 20, 2021.
- Milnicipran (Savella) package insert. Allergan, Inc., December 23, 2022.
- Venlafaxine (Effexor XR) package insert. Wyeth Pharmaceuticals LLC., August 29, 2022.
- Venlafaxine (Effexor) package insert. Direct Rx, January 20, 2020.
- Vilazodone (Viibryd) package insert. Allergen, Inc., September 1, 2021.
- Vortioxetine (Trintellix) package insert/ Takeda Pharmaceuticals America, Inc., November 16, 2022.
- Bupropion (Wellbutrin SR) package insert. GlaxoSmithKline LLC, December 6, 2022.
- Bupropion (Wellbutrin SR) package insert. Bluepoint Laboratories, June 20, 2022.
- Bupropion (Aplenzin) package insert. Bausch Health US, LLC, March 2, 2022.
- Bupropion extended-release tablets (Forfivo XL®) package insert. Almatica Pharmaceuticals, December 31,2019.
- Nefazodone package insert. Ranbaxy Pharmaceuticals Inc., December 24, 2008.
- Trazodone package insert. Accord Healthcare, Inc., December 23, 2021.
- Chlordiazepoxide and amitriptyline package insert. Micro Labs Limited, January 19, 2023.
- Perphenazine and amitriptyline package insert. Mylan Pharmaceuticals Inc., September 26, 2019.
- Clomipramine capsules (Anafranil) package insert. Mallinckrodt, January 2023
- Texas Health and Human Services. Psychotropic medication utilization parameters for children and youth in Texas public behavioral health (6th version), June 2019. Available at: https://hhs.texas.gov/sites/default/files/documents/doing-business-with-hhs/provider-portal/facilities-regulation/psychiatric/psychotropic-medication-utilization-parameters.pdf. Accessed February 5, 2023.
Anti-depressants, selective serotonin reuptake inhibitors
Anti-depressants, selective serotonin reuptake inhibitors - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 28, 2023
- April 23, 2021
- March 2019
- Initially developed
- March 2017
1. Dosage
1.1. Adults
The FDA requires that all antidepressant drugs display a black box warning describing the potential for increased suicidal thinking and behavior compared to placebo when prescribed to young adults (18 to 24 years of age) with MDD and other psychiatric disorders. In short-term clinical trials, the suicide risk was increased in young adults managed with antidepressants compared to those receiving placebo in the first few months of treatment. Suicide risk was not shown to increase in adults over 24 years of age, and patients 65 years of age and older manifested a decreased suicide risk. Patients of all ages prescribed antidepressant drugs should be closely monitored for changes in behavior, clinical worsening, or suicidality1-2.
Citalopram is FDA approved for treatment of Major Depressive Disorder (MDD), Escitalopram is FDA approved for Generalized Anxiety Disorder (GAD) and MDD. Fluoxetine is FDA approved for Bipolar I Disorder (BD), Bulimia Nervosa (BN), Obsessive Compulsive Disorder (OCD), Panic Disorder (PD), Premenstrual Dysphoric Disorder (PMDD), and MDD. Fluvoxamine is FDA approved for OCD. Paroxetine is FDA approved for Seasonal Affective Disorder (SAD), Post Traumatic Stress Disorder (PTSD), Vasomotor Symptoms associated with Menopause (VMS), GAD, MDD, OCD, PDD, and PMDD. Sertraline is FDA approved for MDD, OCD, PD, SAD, PTSD, and PMDD. Olanzapine/Fluoxetine is FDA approved for Treatment Resistant Depression (TRD) and BD1-17.
Maximum recommended daily doses for SSRI antidepressant drugs in adults, including the elderly population, are summarized in Tables 1 and 2 for both monotherapy and SSRI combination therapy, respectively. However, in all patients, the lowest effective antidepressant dose should be utilized to minimize unwanted adverse effects. Patient profiles with SSRI antidepressant dosages exceeding these recommendations will be reviewed.
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
citalopram (Celexa®, generics) | 10 mg, 20 mg, 40 mg tablets; 30 mg capsule; 10 mg/ 5 mL oral solution | MDD |
|
escitalopram (Lexapro®, generics) | 5 mg, 10 mg, 20 mg tablets; 5 mg/5 mL oral solution | GAD, MDD |
|
fluoxetine (Prozac®, generics) | 10 mg, 20 mg, 40 mg capsules; 10 mg, 20 mg, 40 mg, 60 mg tablets; 20 mg/5 mL solution | MDD, OCD |
|
BN, PD |
|
||
BD, TRD |
|
||
fluoxetine (Prozac® Weekly, generics) | 90 mg delayed-release capsules | MDD |
|
fluoxetine (Prozac Pulvules®) | 10 mg, 20 mg, 40 mg pulvules | MDD, OCD |
|
BN, PD |
|
||
BD, TRD |
|
||
fluoxetine (generics) | 10 mg, 20 mg capsules | PMDD |
|
fluvoxamine (generics) | IR: 25 mg, 50 mg, 100 mg tablets ER: 100 mg, 150 mg 24-hour ER capsules |
OCD |
|
paroxetine mesylate (Pexeva®) | 10 mg, 20 mg, 30 mg tablets | GAD, MDD |
|
OCD, PD |
|
||
paroxetine HCl (Paxil®, generics) | 10 mg, 20 mg, 30 mg, 40 mg tablets, 10 mg/ 5 mL suspension | OCD, PD |
|
MDD, PTSD |
|
||
SAD |
|
||
GAD |
|
||
paroxetine HCl (Paxil CR®, generics) | 12.5 mg, 25 mg, 37.5 mg 24-hour ER tablets | MDD |
|
PD |
|
||
SAD |
|
||
PMDD |
|
||
Paroxetine mesylate (Brisdelle®, generics) | 7.5 mg capsule | VMS |
|
sertraline (Zoloft®, generics) | 25 mg, 50 mg, 100 mg tablets; 20 mg/mL oral concentrate | MDD, OCD, PD, SAD, PTSD |
|
PMDD |
|
Legend:
- BD = bipolar I disorder;
- BN = bulimia nervosa
- CR = controlled-release
- ER = extended-release
- GAD = generalized anxiety disorder
- IR = immediate-release
- MDD = major depressive disorder
- OCD = obsessive-compulsive disorder
- PD = panic disorder
- PMDD = premenstrual dysphoric disorder
- PTSD = posttraumatic stress disorder
- SAD = social anxiety disorder
- VMS = vasomotor symptoms associated with menopause
- * Fluvoxamine IR doses greater than 100 mg daily should be administered in divided doses, if dose is unequal larger doses should be given at bedtime
- ++ Data do not confirm that paroxetine doses greater than 20 mg/day are more effective
- + Lower doses may be required in elderly patients
- ^ In combination with olanzapine
Treatment Indication | Drug Name | Available Dosage Strengths | Maximum Recommended Dosage |
---|---|---|---|
BD, TRD | olanzapine/ fluoxetine (Symbyax®, generics) | 3 mg/ 25 mg, 6 mg/ 25 mg, 12 mg/25 mg, 6 mg/ 50 mg, 12 mg/ 50 mg capsules |
|
Legend:
- BD = bipolar I disorder
- TRD = treatment-resistant depression
1.2. Pediatrics
The FDA requires that all antidepressant drugs display a black box warning describing the potential for increased suicidal thinking and behavior when prescribed to children and adolescents with MDD and other psychiatric disorders. In short-term clinical trials, the suicide risk occurred twice as frequently with antidepressant-treated children/adolescents compared to those receiving placebo (4% vs. 2%, respectively) in the first few months of treatment. Pediatric patients prescribed antidepressant drugs should be closely monitored for changes in behavior.
Citalopram and paroxetine are not FDA-approved for use in pediatric patients as safety and effectiveness in this age group have not been well established. The olanzapine/fluoxetine combination is FDA-approved in pediatric patients.
Maximum pediatric recommended doses for SSRI antidepressants approved for use as monotherapy and combination therapy are summarized in Tables 3 and 4, respectively. An additional column reflecting literature-based dosing included in the Texas Health and Human Services Psychotropic Medication Utilization Parameters for Children and Youth in Texas Public Behavioral Health (6th Version) is included in Tables 3 and 4. Dosages exceeding these recommendations will be reviewed.
Drug Name | Available Dosage Strengths | Treatment Indication | Literature Based Maximum Dosage | FDA Approved Maximum Recommended Dosage |
---|---|---|---|---|
citalopram (Celexa®) | 10 mg, 20 mg, 40 mg tablets; 30 mg capsule; 10 mg/ 5 mL oral solution |
|
|
|
escitalopram (Lexapro®, generics) | 5 mg, 10 mg, 20 mg tablets; 5 mg/5 mL oral solution | MDD |
|
|
fluoxetine (Prozac®, generics) | 10 mg, 20 mg, 40 mg capsules; 10 mg, 20 mg, 60 mg tablets; 20 mg/5 mL solution | MDD |
|
|
OCD |
|
|
||
fluoxetine (Prozac Pulvules®) | 10 mg, 20 mg, 40 mg pulvules | BD |
|
|
MDD |
|
|
||
OCD |
|
|
||
fluvoxamine (generics) | IR: 25 mg, 50 mg, 100 mg tablets | OCD |
|
|
Fluvoxamine controlled release (Luvox CR®, generics) | CR: 100 mg, 150 mg | OCD |
|
|
sertraline (Zoloft®, generics) | 25 mg, 50 mg, 100 mg tablets; 20 mg/mL oral concentrate | OCD | Age greater than or equal to 6 years: 200 mg/day | 6 to 17 years of age: 200 mg/day |
Legend:
- BD = bipolar I disorder
- IR = immediate-release
- MDD = major depressive disorder
- OCD = obsessive-compulsive disorder
- # Fluvoxamine IR doses > 50 mg daily should be administered in divided doses, if the two doses are unequal the larger dose should be given at bedtime
- ^ In combination with olanzapine
Treatment Indication | Drug Name | Available Dosage Strengths | Literature Based Maximum Dosage | FDA Approved Maximum Recommended Dosage |
---|---|---|---|---|
BD | olanzapine/ fluoxetine (Symbyax®, generics) | 3 mg/ 25 mg, 6 mg/ 25 mg, 12 mg/25 mg, 6 mg/ 50 mg, 12 mg/ 50 mg capsules | Age 10-17 years: 12 mg olanzapine/50 mg fluoxetine once daily | 10 to 17 years of age: 12 mg/50 mg per day |
Legend:
- BD = bipolar I disorder
1.3. Renal Impairment
Many antidepressants do not require significant dosage modifications in renal impairment. However, dosage guidelines for select SSRIs in renal impairment are available. Table 5 summarizes dosage modifications and/or restrictions for specific SSRI antidepressant medications.
Drug Name | Dosage in Renal Impairment |
---|---|
Citalopram |
|
Escitalopram |
|
Paroxetine (Paxil®, Pexeva®, Paxil CR®) |
|
Legend:
- CR = controlled-release
- IR = immediate-release
2. Duration of Therapy
There is no basis for limiting antidepressant therapy duration when used to manage MDD, OCD, GAD, PTSD, or PD as these disorders can all be characterized as chronic conditions.
Clinical trials have documented fluoxetine efficacy in BN management for up to 52 weeks. Fluoxetine has demonstrated efficacy in PMDD for up to 6 months when administered continuously and up to 3 months when administered intermittently. Paroxetine and sertraline have demonstrated efficacy in PMDD for up to 6 months and 12 months, respectively, in clinical trials. Patients should be assessed periodically to determine need for continued treatment. However, the potential exists for PMDD symptoms to worsen with advancing age until patients reach menopause. Patients responding to fluoxetine, paroxetine, or sertraline therapy for PMDD may benefit from chronic administration.
Paroxetine treatment for VMS exceeding 24 weeks has not been evaluated in clinical trials. Additionally, paroxetine dosages used to manage VMS are not FDA-approved to manage psychiatric conditions, as the dose contained in Brisdelle® is lower than the recommended doses used to manage psychiatric disorders. Patients requiring paroxetine for psychiatric disorders should discontinue Brisdelle® and initiate therapy with a paroxetine formulation FDA-approved for psychiatric use.
3. Duplicative Therapy
The concurrent use of two SSRI antidepressant medications with the same spectrum of activity may not be justified and will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. The following drug-drug interactions summarized in Table 6 are considered clinically relevant for SSRI antidepressants. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
fluoxetine | ergot derivatives | increased risk of ergotism due to fluoxetine inhibition of CYP3A4-mediated ergot metabolism | avoid concurrent use | moderate (CP) |
SSRIs | anticoagulants | co-administration may increase bleeding risk due to impaired platelet aggregation most likely resulting from platelet serotonin depletion | patients should be monitored for signs/symptoms of bleeding (including INR) if combined therapy necessary | major (DrugReax) 3-moderate (CP) |
SSRIs | drugs with serotonergic properties (e.g., antipsychotics, tramadol, triptans) or dopamine antagonist properties (e.g., phenothiazines, metoclopramide) | combined use may increase risk of serotonin syndrome or neuroleptic malignant syndrome (NMS) | cautiously administer concurrently and closely observe for signs/symptoms of serotonin syndrome or NMS, especially with treatment initiation or dosage increases | moderate(CP) |
SSRIs | MAOIs | increased risk of serotonin syndrome (e.g., mental status changes, hyperpyrexia, autonomic instability, neuromuscular symptoms, seizures and/or gastrointestinal symptoms, restless, shivering, hypertonia, tremor) due to serotonin metabolism inhibition by monoamine oxidase | allow 14 days after MAOI discontinuation before initiating other antidepressant therapy; wait 5 weeks after discontinuing fluoxetine before initiating MAOIs | contraindicated (CP) |
SSRIs | tramadol | increased risk of serotonin syndrome and seizures due to increased nervous system serotonin concentrations (additive effects on serotonin, SSRI inhibition of CYP2D6-mediated tramadol metabolism) as well as potential reduced seizure threshold with SNRIs, SSRIs | avoid concurrent use | moderate (CP) |
SSRIs | pimozide | increased risk of pimozide toxicity including cardiotoxicity (QT prolongation) due to elevated plasma concentrations or additive effects on QT interval | avoid concurrent use | contraindicated (DrugReax) 1-severe (CP) |
SSRIs | select phenothiazines (mesoridazine, thioridazine) | increased risk of somnolence, bradycardia and serious cardiotoxicity (QT prolongation, torsades de pointes) due to potential additive effects on QT interval prolongation; increased thioridazine serum concentrations/ decreased thioridazine elimination and potential for serious cardiac arrhythmias due to CYP2D6 inhibition by duloxetine, fluoxetine, or paroxetine | avoid concurrent use; if adjunctive use necessary, monitor for increased pharmacologic/toxic effects; adjust dose as necessary | contraindicated (CP) |
Citalopram, Escitalopram | Chlorpromazine | Increased risk of QT prolongation and torsade’s de pointes. SSRIs may increase serum concentration of chlorpromazine leading to phenothiazine related reactions. Increased risk for serotonin syndrome. | Avoid concurrent use. If adjunctive use is necessary, ECG monitoring is recommended. Monitor for increased pharmacologic/toxic effects; adjust dose as necessary | Major (CP) |
SSRI | Chlorpromazine | Increased risk of QT prolongation and torsade’s de pointes. SSRIs may increase serum concentration of chlorpromazine leading to phenothiazine related reactions. Increased risk for serotonin syndrome. | Should be avoided if possible. If adjunctive use is necessary, ECG monitoring is recommended. Monitor for increased pharmacologic/toxic effects; adjust dose as necessary | Major (CP) |
Legend:
- MAOI = monoamine oxidase inhibitor
- SNRI = serotonin-norepinephrine reuptake inhibitor
- SSRI= selective serotonin reuptake inhibitor
- # CP = Clinical Pharmacology
5. References
- IBM Micromedex DRUGDEX (electronic version). IBM Watson health, Greenwood Village, Colorado, USA. Available at: www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: January 18th, 2023)
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2021. Available at: http://clinicalpharmacologyip.com.ezproxy.lib.utexas.edu/. Accessed January 18, 2023.
- Citalopram [Package Insert]. Morristown. NJ: Almatica Pharma LLC.https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=2f815b0c-6da7-cb61-e89c-7de628092d0d&audience=consumer. February 2022.
- Citalopram capsules [Package Insert]. Morristown. NJ: Almatica Pharma LLC. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=2f815b0c-6da7-cb61-e89c-7de628092d0d. February 2022.
- Escitalopram [Package Insert]. East Windsor. NJ: Aurobindo Pharma Limited. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=d5fbc8ce-bd41-4bd0-b413-0dea97e596c3&type=display. October 2021.
- Prozac [Package Insert]. Indianapolis, IN: Dista Products Company. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=2f815b0c-6da7-cb61-e89c-7de628092d0d&audience=consumer. February 2022.
- Prozac [Package Insert]. Bachupally, India: Dr. Reddys’ Laboratory Limited. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=887fc670-db67-4cfe-967b-46b38375dae5&type=display. June 2021.
- Prozac [Package Insert]. Bachupally, India: Dr. Reddys’ Laboratory Limited. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=887fc670-db67-4cfe-967b-46b38375dae5&type=display. June 2021.
- Fluoxetine [Package Insert]. Indrad, India: Torrent Pharmaceuticals Limited. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=dcebc7cf-6f95-4f7a-a22b-c7d2e0f04d74&type=display. November 2022.
- Fluvoxamine Maleate Extended Release [Package Insert]. Princeton, NJ: Bion Pharma Inc. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=9924422b-7c90-42bf-a680-ffd92063d5f0&type=display. October 2020.
- Pexeva [Package Insert]. Roswell, GA: Sebela Pharmaceutics Inc. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=50fe88bd-f0dd-5fad-e054-00144ff8d46c&type=display. July 5, 2022.
- Paxil CR [Package Insert]. Toronto, ON: Apotex Inc. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=483bd97f-c4d0-4e23-aaa8-6334f4471e0c&type=display. December 6, 2022.
- Paxil [Package Insert]. Toronto, ON: Apotex Inc. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=584ace29-6e40-432f-950f-ab7e98653d32&audience=professional. December 6, 2022.
- Brisdelle [Package Insert]. Roswell, GA: Sebela Pharmaceutics Inc. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=50361fc8-8fba-1c45-e054-00144ff88e88&type=display. June 16, 2022.
- Fluvoxamine Maleate [Package Insert]. Toronto, ON: Apotex Inc. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=6Eeb14df-6fcf-a737-5359-5744eb4accea&audience=consumer. November 2021.
- Sertraline [Package Insert]. Morristown, NJ: Almatica Pharma LLC. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=8c8bcba9-eaeb-aa44-f9ea-b580de55a439&type=display. October 4, 2021.
- Symbyax [Package Insert]. Indianapolis, IN: Lilly USA LLC. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=6b28c424-0b7e-4b75-b090-f116b113554e&type=display. December 23, 2021.
- Texas Health and Human Services. Psychotropic medication utilization parameters for children and youth in Texas public behavioral health (6 version), June 2019. Available at: https://hhs.texas.gov/sites/default/files/documents/doing-business-with-hhs/provider-portal/facilities-regulation/psychiatric/psychotropic-medication-utilization-parameters.pdf. Accessed January 18, 2023.
- National Institutes of Health. (n.d.). DailyMed. U.S. National Library of Medicine. Retrieved January 18, 2023, from https://dailymed.nlm.nih.gov/dailymed/index.cfm
- DRUGS@FDA: FDA-approved drugs. FDA. (n.d.). Retrieved January 18, 2023, from https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm
Anti-diabetic Agents (oral)
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- October 21, 2022; September 2020; September 2018; September 2016; August 2014; July 2014; October 2012; January 2011; February 2008; November 2007; June 2003; July 2002; September 2001; June 2001; June 2000; July 1999; June 1998; June 1997; June 1996; September 1995.
- Initially developed
- April 1994
1. Dosage
Oral antidiabetic agents are FDA-approved for use in patients with type 2 diabetes as monotherapy or in combination with other oral antidiabetic agents or insulin, when the single agent alone, in addition to diet and exercise, does not provide sufficient glycemic control.
1.1. Adults
Alpha glucosidase inhibitors such as acarbose inhibit the ability of alpha glucosidase to convert nonabsorbable dietary starch and sucrose into absorbable glucose, which results in slower glucose absorption and reduced postprandial glucose levels1-4.
Metformin is an oral biguanide antihyperglycemic agent that improves glycemic control by decreasing hepatic glucose production and intestinal glucose absorption as well as improving insulin sensitivity through increased peripheral glucose uptake and utilization1,2,5-8.
The bile acid sequestrant, colesevelam, is FDA-approved for use to manage primary hyperlipidemia as well as type 2 diabetes as an adjunct to diet and exercise. The mechanism by which colesevelam lowers hemoglobin A1c (HbA1c) and improves glycemic control is unknown1,2,9.
DPP-IV inhibitors reduce inactivation of incretin hormones and improve glycemic control in type 2 diabetic patients without significant weight gain. The incretin hormones, glucagon-like peptide (GLP-1) and glucose-dependent insulinotropic peptide (GIP), have been identified as important factors in glucose homeostasis. Released from the gut postprandially, GLP-1 and GIP stimulate insulin secretion from pancreatic beta cells in response to normal or elevated blood glucose concentrations. GLP-1 also lowers glucagon excretion from pancreatic beta cells, which results in reduced hepatic glucose production, reduced appetite, slowed gastric emptying, and improved β-cell function1,2,10-13 .
Bromocriptine, a dopamine agonist, is FDA-approved as Cycloset® to manage glycemic control in type 2 diabetes as an adjunct to diet and exercise through a currently undetermined mechanism1,2,14 .
Although GLP-1 agonists are primarily administered as a subcutaneous injection, semaglutide (Rybelsus®) received FDA approval as the first oral GLP-1 agonist used for the management of type 2 diabetes. Of note, semaglutide has not demonstrated a reduction in adverse cardiovascular outcomes while several injectable formulations have1,2,15,16.
Meglitinides, such as nateglinide and repaglinide, stimulate insulin secretion by inhibiting ATP-sensitive potassium channels in pancreatic beta-cells1,2,17,18.
Sodium-glucose co-transporter 2 (SGLT2) inhibitors work by inhibiting SGLT2 transporters in the proximal renal tubule and reduce reabsorption of filtered glucose causing increased glucose excretion and lower serum glucose concentrations. Recent studies regarding these medications have provided the support for the addition of new indications. Canagliflozin, empagliflozin, and dapagliflozin have demonstrated a reduction of risk of cardiovascular death and reduction of risk of hospitalization for heart failure in patients with type 2 diabetes. Additionally, canagliflozin and dapagliflozin also have a new indication for the reduction of major cardiovascular events, and reduction of risk of sustained eGFR decline and end-stage renal disease in patients with type 2 diabetes. Empagliflozin and dapagliflozin have additional FDA approvals for patients without type 2 diabetes mellitus1,2,19-22 .
Oral sulfonylureas reduce blood glucose by stimulating insulin from pancreatic beta-cells as well as increasing responsiveness in insulin-sensitive tissues1,2,23-27.
Thiazolidinediones are potent agonists of peroxisome proliferator-activated receptor-gamma (PPAR-gamma), receptors important for insulin action which are in adipose tissue, the liver, and skeletal muscle. Activation of these receptors affects the transcription of genes responsible for control of glucose and lipid metabolism. These agents, in the presence of insulin, decrease insulin resistance in the liver and at peripheral sites and improve insulin-dependent glucose disposal and reduce hepatic glucose output1,2,28,29.
Thiazolidinediones have been associated with an increased risk of congestive heart failure most likely due to a greater incidence of fluid retention/edema associated with this drug class. Patients should be closely monitored for signs and symptoms of CHF, and thiazolidinedione dosages reduced or discontinued should symptoms develop. Thiazolidinediones are contraindicated for use in NYHA Class III or IV heart failure and are not recommended in patients with symptomatic heart failure1,2,28,29.
Female patients treated with thiazolidinediones may be at increased risk for developing fractures. These agents have been shown to stimulate formation of more adipocytes rather than osteoblasts in bone. Thiazolidinediones may also decrease hip and femoral neck bone mineral density in older diabetic patients. Fractures currently reported with thiazolidinedione use have been limited to the humerus, hand, and foot in female patients only. Further assessment of thiazolidinedione adverse skeletal effects is necessary to determine the risk-benefit ratio of these agents in diabetic patients. Female patients at higher fracture risk should be considered for bone mineral density assessment and bone strengthening therapies (e.g., calcium, vitamin D, bisphosphonates) prior to therapy initiation with thiazolidinediones1,2,28,29.
Maximum recommended daily doses for available oral antidiabetic agents, both as monotherapy and as combination therapy, are summarized in Tables 1 and 2. Prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Therapeutic Indications | Maximum Recommended Dosage |
---|---|---|---|
acarbose (generics) | 25 mg, 50 mg, 100 mg tablets | type 2 diabetes |
|
miglitol (generics) | 25 mg, 50 mg, 100 mg tablets | type 2 diabetes | 300 mg/day, in three divided doses |
Drug Name | Dosage Form/Strength | Therapeutic Indications | Maximum Recommended Dosage |
---|---|---|---|
metformin (generics) | 500 mg, 850 mg, 1000 mg immediate-release tablets | type 2 diabetes | 2550 mg/day |
metformin (Fortamet®, Glumetza®, various generics) | 500 mg, 750 mg, 1000 mg extended-release tablets | type 2 diabetes | 2000 mg/day (2500 mg/day Fortamet®) |
metformin (Riomet®, generics) | 500 mg/5 mL oral solution | type 2 diabetes | 2550 mg/day |
Drug Name | Dosage Form/Strength | Therapeutic Indication | Maximum Recommended Dosage |
---|---|---|---|
colesevelam (Welchol®, generic)) | 625 mg tablets | type 2 diabetes | 3.75 g/day, in single or two divided doses |
colesevelam (Welchol®, generic)) | 3.75 g powder packet for oral suspension# | type 2 diabetes | 3.75 g/day as single dose |
Legend:
- # dissolve in 4-8 ounces of water, fruit juice or diet soda and administer with a meal
Drug Name | Dosage Form/Strength | Therapeutic Indication | Maximum Recommended Dosage |
---|---|---|---|
alogliptin (Nesina®, generics) | 6.25 mg, 12.5 mg, 25 mg tablets | type 2 diabetes | 25 mg/day |
linagliptin (Tradjenta®) | 5 mg | type 2 diabetes | 5 mg/day |
saxagliptin (Onglyza®) | 2.5 mg, 5 mg tablets | type 2 diabetes | 5 mg/day |
sitagliptin (Januvia®) | 25 mg, 50 mg, 100 mg tablets | type 2 diabetes | 100 mg/day |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
bromocriptine (Cycloset®) | 0.8 mg tablets | type 2 diabetes mellitus | 4.8 mg/day |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
semaglutide (Rybelsus®) | 3 mg, 7 mg, 14 mg tablets | type 2 diabetes | 14 mg/day |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
nateglinide (generics) | 60 mg, 120 mg tablets | type 2 diabetes | 360 mg/day, in three divided doses |
repaglinide (generics) | 0.5 mg, 1 mg, 2 mg tablets | type 2 diabetes | 16 mg/day (in divided doses before meals, up to 4 times daily depending on meal number) |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
Canagliflozin (Invokana®) | 100 mg, 300 mg tablets | type 2 diabetes* | 300 mg/day |
dapagliflozin (Farxiga®) | 5 mg, 10 mg tablets | type 2 diabetes! | 10 mg/day |
empagliflozin (Jardiance®) | 10 mg, 25 mg tablets | type 2 diabetes# | 25 mg/day |
ertugliflozin (Steglatro®) | 5 mg, 15 mg tablets | type 2 diabetes | 15 mg/day |
Legend:
- * FDA approved to reduce the risk of major adverse cardiovascular events in adults with type 2 diabetes mellitus and established cardiovascular disease; to reduce the risk of end-stage kidney disease, doubling of serum creatinine, cardiovascular death, and hospitalization for heart failure in adults with type 2 diabetes mellitus and diabetic nephropathy with albuminuria
- ! FDA approved to reduce the risk of hospitalization for heart failure in adults with type 2 diabetes mellitus and either established cardiovascular disease or multiple cardiovascular risk factors, reduce the risk of cardiovascular death and hospitalization for heart failure in adults with heart failure with reduced ejection fraction (NYHA class II-IV), and to reduce the risk of sustained eGFR decline, end stage kidney disease, cardiovascular death, and hospitalization for heart failure in adults with chronic kidney disease at risk of progression
- # FDA approved to reduce the risk of cardiovascular death and hospitalization due to heart failure in adults with heart failure, and to reduce the risk of cardiovascular death in adults with type 2 diabetes mellitus and established cardiovascular disease
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
glimepiride (Amaryl®, generics) | 1 mg, 2 mg, 4 mg tablets | type 2 diabetes | 8 mg/day |
glipizide (generics) | 5 mg, 10 mg immediate-release tablets | type 2 diabetes | 40 mg/day |
glipizide (Glucotrol XL®, generics) | 2.5 mg, 5 mg, 10 mg extended-release tablets | type 2 diabetes | 20 mg/day |
glyburide (generics) | 1.25 mg, 2.5 mg, 5 mg non-micronized tablets | type 2 diabetes | 20 mg/day |
glyburide (Glynase®, generics) | 1.5 mg, 3 mg, 6 mg micronized tablets | type 2 diabetes | 12 mg/day |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
pioglitazone (Actos®, generics) | 15 mg, 30 mg, 45 mg tablets | type 2 diabetes | 45 mg/day |
rosiglitazone (Avandia®) | 2 mg, 4 mg tablets | Type 2 diabetes | 8 mg/day in single or two divided doses |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
alogliptin/metformin (Kazano®, generics) | 12.5 mg/500 mg, 12.5 mg/1000 mg tablets | type 2 diabetes | 25 mg/2000 mg/day |
alogliptin/pioglitazone (Oseni®, generics) | 12.5 mg/15 mg, 12.5 mg/30 mg, 12.5 mg/45 mg, 25 mg/15 mg, 25 mg/30 mg, 25 mg/45 mg tablets | type 2 diabetes | 25 mg/45 mg/day |
canagliflozin/metformin (Invokamet®) | 50 mg/500 mg, 50 mg/1000 mg, 150 mg/500 mg, 150 mg/1000 mg tablets | type 2 diabetes* | 300 mg/2000 mg/day in two divided doses |
canagliflozin/metformin (Invokamet® XR) | 50 mg/500 mg, 50 mg/1000 mg, 150 mg/500 mg, 150 mg/1000 mg extended-release tablets | type 2 diabetes* | 300 mg/2000 mg/day once daily |
dapagliflozin/ metformin (Xigduo® XR) | 2.5 mg/1000 mg, 5 mg/500 mg, 5 mg/1000 mg, 10 mg/500 mg, 10 mg/1000 mg tablets | type 2 diabetes! | 10 mg/2000 mg/day once daily |
dapagliflozin/saxagliptin (Qtern®) | 5 mg/ 5 mg, 10 mg/5 mg tablets | type 2 diabetes | 10 mg/5 mg/day once daily |
empagliflozin/ linagliptin (Glyxambi®) | 10 mg/5 mg, 25 mg/5 mg tablets | type 2 diabetes^ | 25 mg/5 mg/day |
empagliflozin/metformin (Synjardy®) | 5 mg/500 mg, 5 mg/1000 mg, 12.5 mg/500 mg, 12.5 mg/1000 mg tablets | type 2 diabetes^ | 25 mg/2000 mg/day in two divided doses |
empagliflozin/ metformin (Synjardy® XR) | 5 mg/ 1000 mg, 10 mg/1000 mg, 12.5 mg/1000 mg, 25 mg/1000 mg extended-release tablets | type 2 diabetes^ | 25 mg/2000 mg/day once daily |
empagliflozin/linagliptin/metformin (Trijardy® XR) | 5 mg/2.5 mg/1000 mg, 10 mg/5 mg/1000 mg, 12.5 mg/2.5 mg/1000mg, 25 mg/5 mg/1000 mg extended-release tablets | type 2 diabetes^ | 25 mg/ 5 mg/ 2000 mg daily |
ertugliflozin/metformin (Segluromet®) | 2.5 mg/500 mg, 2.5 mg/1000 mg, 7.5 mg/500 mg, 7.5 mg/1000 mg tablets | type 2 diabetes | 15 mg/2000 mg/day in two divided doses |
ertugliflozin/sitagliptin (Steglujan®) | 5 mg/100 mg, 15 mg/100 mg tablets | type 2 diabetes | 15 mg/100 mg/day once daily |
glipizide/ metformin (generics) | 2.5 mg/250 mg, 2.5 mg/500 mg, 5 mg/500 mg | type 2 diabetes |
|
glyburide/metformin (generics) | 1.25 mg/250 mg, 2.5 mg/500 mg, 5 mg/500 mg tablets | type 2 diabetes |
|
linagliptin/ metformin (Jentadueto®) | 2.5 mg/500 mg, 2.5 mg/850 mg, 2.5 mg/1000 mg immediate-release tablets | type 2 diabetes | 5 mg/2000 mg/day in two divided doses |
linagliptin/metformin (Jentadueto® XR) | 2.5 mg/1000 mg, 5 mg/1000 mg extended-release tablets | type 2 diabetes | 5 mg/2000 mg/day once daily |
pioglitazone/glimepiride (Duetact®, generics) | 30 mg/2 mg, 30 mg/4 mg tablets | type 2 diabetes | 30 mg/4 mg once daily |
pioglitazone/metformin (ActoPlus Met®, generics) | 15 mg/500 mg, 15 mg/850 mg immediate-release tablets | type 2 diabetes | 45 mg/2550 mg/day |
saxagliptin/metformin (Kombiglyze® XR) | 5 mg/500 mg, 5 mg/1000 mg, 2.5 mg/1000 mg extended-release tablets | type 2 diabetes | 5 mg/2000 mg/day |
sitagliptin/ metformin (Janumet®) | 50 mg/500 mg, 50 mg/1000 mg immediate-release tablets | type 2 diabetes | 100 mg/2000 mg/day in two divided doses |
sitagliptin/ metformin (Janumet XR®) | 50 mg/500 mg, 50 mg/1000 mg, 100 mg/1000 mg extended-release tablets | type 2 diabetes | 100 mg/2000 mg/day once daily |
Legend:
- * FDA approved to reduce the risk of major adverse cardiovascular events in adults with type 2 diabetes mellitus and established cardiovascular disease; to reduce the risk of end-stage kidney disease, doubling of serum creatinine, cardiovascular death, and hospitalization for heart failure in adults with type 2 diabetes mellitus and diabetic nephropathy with albuminuria
- ! FDA approved to reduce the risk of hospitalization for heart failure in adults with type 2 diabetes mellitus and either established cardiovascular disease or multiple cardiovascular risk factors, reduce the risk of cardiovascular death and hospitalization due to heart failure in adults with heart failure with reduced ejection fraction (NYHA class II-IV), and to reduce the risk of sustained eGFR decline, end stage kidney disease, cardiovascular death, and hospitalization for heart failure in adults with chronic kidney disease at risk of progression
- ^ Empagliflozin is FDA approved to reduce the risk of cardiovascular death in adults with type 2 diabetes mellitus and established cardiovascular disease
1.2. Pediatrics
Risperidone has been FDA-approved to manage symptoms of irritability in autistic children greater than 5 years of age and adolescents, and has recently gained FDA-approved indications for bipolar mania in children and adolescents 10 to 17 years of age and schizophrenia in adolescents 13 to 17 years of age. Aripiprazole has received recent FDA approval for treating Tourette’s disorder in pediatric patients 6 to 18 years of age, and is also FDA-approved for managing schizophrenia in adolescents 13 to 17 years of age, bipolar disorder with or without psychotic features in children 10 to 17 years of age, and irritability associated with autistic disorder in children 6 to 17 years of age. Olanzapine has been granted FDA approval for bipolar disorder and schizophrenia in adolescents 13 years of age and older. Quetiapine is FDA approved for acute treatment of bipolar disorder mania episodes in children and adolescents 10 to 17 years of age and schizophrenia management in adolescents 13 to 17 years of age. Paliperidone is approved FDA for the management of schizophrenia in adolescents 12 to 17 years of age. Lurasidone is approved for the management of depressed phase bipolar disorder in children 10 to 17 years of age, and it is approved for the management of schizophrenia in patients 13 to 17 years of age. Brexpiprazole, cariprazine, clozapine, iloperidone, Lumateperone, ziprasidone, and aripiprazole tablets with sensors (Abilify MyCite®) are not recommended for use in pediatric patients as safety and efficacy have not been established in this patient population. Additionally, pimavanserin is not approved for use in pediatric patients as Parkinson’s disease is typically not observed in pediatric patients, and safety and efficacy data are not available for pimavanserin in the pediatric population 1-25.
Atypical antipsychotic pediatric dosages are summarized in Table 3. An additional column reflecting literature-based dosing included in the Texas Health and Human Services Psychotropic Medication Utilization Parameters for Children and Youth in Texas Public Behavioral Health (6th Version) is included in Tables 3 1-21, 23, 26 and 4 26.
The olanzapine/fluoxetine combination has been approved for use in pediatric patients 10-17 years of age with depression associated with BD 1-4, 22. Recommended pediatric dosages are summarized in Table 4 1-4, 22, 26.
2. Renal Impairment
Acarbose should be avoided in patients with an estimated glomerular filtration rate (eGFR) less than 25 mL/minute/ 1.73m2. Miglitol should be avoided in patients with an eGFR less than 25 mL/minute/ 1.73m21-4.
Metformin should be used cautiously in patients with an eGFR below 60 mL/ minute/1.73m2. Renal function should be closely monitored in patients with an eGFR of 30-59 mL/ minute/1.73m2, with doses decreased by 50% in patients with an eGFR of 30-59 mL/ minute/1.73m2. Metformin doses should be discontinued in patients with an eGFR less than 30 mL/ minute/1.73m21,2,5-8.
In moderate renal impairment (CrCl 30 to 59 ml/min), alogliptin dosages should be reduced to 12.5 mg daily, while in patients with severe renal impairment (CrCl less than 30 ml/min), alogliptin dosages should not exceed 6.25 mg daily1,2,10.
Linagliptin dosages do not need to be adjusted for renal insufficiency. Patients on linagliptin combination therapy with a CrCl less than 30 ml/min may have increased risk of hypoglycemia and may need more frequent monitoring and/or dose adjustments1,2,11.
Saxagliptin dosages should be reduced to 2.5 mg once daily in patients with CrCl less than 45 ml/min or in patients prescribed a strong CYP3A4 inhibitor (e.g., ketoconazole)1,2,12.
Sitagliptin dosages should be adjusted in adult patients with renal insufficiency. Patients with CrCl 30 – 44 ml/min should receive sitagliptin 50 mg daily, while patients with severe renal insufficiency CrCl less than 30 ml/min or those patients with end stage renal disease requiring hemodialysis or peritoneal dialysis should receive sitagliptin 25 mg daily1,2,13.
Repaglinide should be initiated at a dose of 0.5 mg before each meal in patients with a CrCl between 20-39 mL/min1,2,18.
Canagliflozin doses in patients with renal impairment should be reduced to 100 mg daily when the estimated glomerular filtration rate (eGFR) is 30-59 ml/min/1.73 m2 and avoided when eGFR is less than 30 ml/min/1.73 m2. Patients may continue up to 100 mg daily of canagliflozin when eGFR is less than 30 ml/min/1.73 m2 if they have albuminuria greater than 300 mg/day1,2,19.
Dapagliflozin dosages should be adjusted in patients with renal impairment. For patients with an eGFR of 25-44 ml/min/1.73m2 the maximum dose is 10 mg daily. Initiating dapagliflozin in patients with an eGFR less than 25 ml/min/1.73m2 is not recommended. However, patients may continue therapy if eGFR declines to less than 25 ml/min/1.73m2. Dapagliflozin is contraindicated in patients on dialysis1,2,20.
Empagliflozin therapy should not be initiated in patients with eGFR less than 30 ml/min/1.73m2 for glycemic control if they do not have established cardiovascular disease or cardiovascular risk factors. Studies in patients with heart failure enrolled patients with an eGFR equal to or above 20 ml/min/1.73m2, and there is insufficient data to recommend use in patients with an eGFR below 20 ml/min/1.73m2. Empagliflozin is contraindicated in patients with an eGFR less than 20 ml/min/1.73m21,2,21.
Ertugliflozin therapy is not recommended in patients with an eGFR less than 45 mL/min/1.73m21,2,22.
Glimepiride should be initiated at 1 mg daily and slowly titrated in patients with renal impairment1,2,23.
Glyburide should be avoided in patients with renal impairment. If use is necessary, start at 1.25 mg daily conventional glyburide, 0.75 mg daily for micronized glyburide. All sulfonylurea medications should be initiated with caution and at a reduced starting dose to minimize the risk of hypoglycemic events1,2,23-27.
3. Duration of Therapy
4. Duplicative Therapy
Administering two or more oral sulfonylureas concurrently is not justified. The concomitant use of two or more oral sulfonylureas will be reviewed.
Combined administration of nateglinide or repaglinide and oral sulfonylureas is not justified as both drug classes stimulate insulin secretion. Adjunctive use of meglitinides and oral sulfonylureas will be reviewed.
The risk of hypoglycemia may increase when acarbose or miglitol is added to pre-existing oral hypoglycemic or insulin therapy. Blood glucose levels should be monitored closely when alpha glucosidase inhibitor therapy is initiated in patients already receiving oral hypoglycemic or insulin therapy.
Adjunctive administration of rosiglitazone and insulin is not recommended as a greater incidence of myocardial ischemic events was observed in clinical trials when rosiglitazone was added to insulin therapy.
Concurrent administration of thiazolidinediones or metformin with sulfonylureas may result in an increased frequency of hypoglycemic episodes. Blood glucose levels should be closely monitored if patients are prescribed thiazolidinediones or metformin and oral sulfonylureas concomitantly, and oral sulfonylurea dosage reductions should be considered.
Concurrent administration DDP-4 inhibitors and sulfonylureas, with or without metformin, have resulted in significant reductions in HbA1c and fasting plasma glucose compared to placebo. The risk of hypoglycemia with DDP-4 inhibitors in combination with metformin and TZDs is comparable to that observed with placebo; however, the incidence of hypoglycemia in patients prescribed DDP-4 inhibitors concurrently with sulfonylureas is greater than that seen with placebo. The incidence of hypoglycemia in patients prescribed DDP-4 inhibitors and insulin concurrently has not been adequately evaluated. Therefore, blood glucose levels should be closely monitored if patients are prescribed DDP-4 inhibitors and oral sulfonylureas or insulin concomitantly, and oral sulfonylurea dosage reductions should be considered.
Concomitant use of multiple SGLT2 inhibitors is not recommended due to similar pharmacologic mechanisms and increased risk of adverse events. Combined administration is not advised and will be reviewed.
The concurrent use of oral semaglutide when combined with an insulin secretagogue, such as a sulfonylurea, or insulin may increase the risk of hypoglycemia, including severe hypoglycemia. The risk of hypoglycemia may be reduced by decreasing the dose of the insulin secretagogue or insulin.
5. Drug-Drug Interactions
Patient profiles will be reviewed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for oral antidiabetic agents are summarized in Table 13. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level* |
---|---|---|---|---|
acarbose | digoxin | adjunctive administration may result in decreased digoxin levels; acarbose most likely impairs digoxin absorption | avoid concurrent administration; separate administration by 6 hours to avoid interaction; monitor digoxin levels | 2-major (CP) |
alpha-glucosidase inhibitors (AGIs) | intestinal adsorbents (e.g. charcoal) and digestive enzymes (e.g. amylase, pancreatin) | combined therapy may result in decreased AGI absorption, reduced pharmacologic effects | avoid concurrent administration; separate administration times | moderate (DrugReax) 2-major (CP) |
antidiabetic agents (ADAs) | ACE inhibitors/ angiotensin receptor blockers (ARBs) | combined therapy may result in increased risk of hypoglycemia, most likely due to ACE inhibitor/ARB improved insulin sensitivity | monitor glycemic control when initiating or changing therapy | 3-moderate (CP) |
ADAs | atypical antipsychotics (AAs) | combined therapy may result in loss of glycemic control; AAs may increase insulin resistance or inhibit beta cells | monitor for loss of glycemic control; adjust doses as necessary | 3-moderate (CP) |
ADAs | beta blockers (BB) | BB may prolong hypoglycemia (interference with mobilization of glycogen stores), promote hyperglycemia (inhibit insulin secretion/decrease tissue insulin sensitivity), as well as mask signs/symptoms of hypoglycemia | administer cautiously together; consider cardioselective BB due to lesser effects on glucose metabolism, less masking of hypoglycemic signs/ symptoms | moderate (DrugReax) 3-moderate (CP) |
ADAs | fluoroquinolones | combined administration may increase risk of hyper- or hypoglycemia; mechanism unknown | closely monitor serum glucose levels; adjust ADA doses as needed | major (DrugReax) 3-moderate (CP) |
ADAs | MAOIs | adjunctive therapy may result in additive glucose-lowering effects; MAOIs may stimulate insulin secretion | closely monitor serum glucose levels; decrease antidiabetic agent doses as necessary | moderate (DrugReax) 3-moderate (CP) |
ADAs | somatostatin analogues (SAs) (e.g., octreotide, pasireotide) | concurrent use may impair glucose regulation as SAs inhibit insulin and glucagon secretion; substantially increased blood glucose levels may result | monitor closely for changes in blood glucose control before and throughout SA therapy; adjust antidiabetic doses as needed | major (DrugReax) 2-major (CP) |
ADAs | thiazide diuretics | combined therapy may antagonize hypoglycemic effects of ADAs as thiazides increase blood glucose levels in dose-related manner | utilize lower thiazide doses, if possible; monitor serum glucose levels; adjust ADA doses as needed | 3-moderate (CP) |
bromocriptine | ergot alkaloids | combined therapy may increase risk of ergot toxicity (e.g., angina, paresthesias) as bromocriptine is ergot derivative | avoid using together | 1-severe (CP) |
bromocriptine | metoclopramide | combined therapy may attenuate bromocriptine pharmacological effects; metoclopramide is dopamine antagonist | avoid concurrent use | 2-major (CP) |
bromocriptine | select macrolides (e.g., clarithromycin, erythromycin) | potential for increased bromocriptine pharmacologic/ adverse effects due to decreased hepatic metabolism by macrolide | monitor patient for adverse effects; decrease bromocriptine dose as necessary | moderate (DrugReax) 3-moderate (CP) |
bromocriptine | serotonin-receptor agonists (e.g., sumatriptan) | increased risk of serious coronary ischemia due to potential for additive vasospasm | avoid concurrent administration within 24 hours of each other | 2-major (CP) |
bromocriptine | drugs metabolized by CYP3A4 (e.g., tacrolimus, cyclosporine, sirolimus) | potential for decreased cyclosporine/ sirolimus/ tacrolimus clearance, enhanced pharmacologic/ adverse effects; bromocriptine is CYP3A4 inhibitor | monitor for increased pharmacologic/adverse effects; consider reducing dose of CYP3A4 substrate | 2-major (CP) |
bromocriptine | first generation antipsychotics | decreased efficacy of bromocriptine due to antagonization of prolactin-lowering effects and elevation of prolactin levels with chronic administration of these antipsychotics | avoid concurrent administration together; closely monitor for adverse events if they must be co-administered | 2-major (CP) |
canagliflozin | UGT enzyme inducers (e.g., rifampin) | adjunctive administration may decrease canagliflozin AUC by 51% and reduce therapeutic efficacy as canagliflozin is metabolized through O-glucuronidation by several UGT enzymes (UGT1A9 and UGT2B4) | administer cautiously together; may increase canagliflozin dose to 300 mg daily during adjunctive therapy with UGT enzyme inducers or may consider alternative antidiabetic agents metabolized by different mechanisms | major (DrugReax) 2-major (CP) |
colesevelam | cyclosporine | decreased cyclosporine peak serum concentrations and AUC with combined therapy | administer cyclosporine at least 4 hours prior to colesevelam; monitor serum cyclosporine levels | 3-moderate (CP) |
colesevelam | oral contraceptives (OC) | decreased peak ethinyl estradiol/ norethindrone serum levels, AUC with combined therapy | administer OC at least 4 hours before colesevelam | 3-moderate (CP) |
colesevelam | thyroid hormones (TH) (e.g., levothyroxine, liothyronine) | combined therapy may cause reduced thyroid hormone absorption due to nonspecific binding to colesevelam | take TH at least 4 hours prior to colesevelam; monitor for adequate thyroid response; adjust TH dose as needed | moderate (DrugReax) 3-moderate (CP) |
glimepiride | voriconazole | combined therapy may increase glimepiride levels and risk of hypoglycemia; voriconazole inhibits CYP2C9, glimepiride metabolized by CYP2C9 | monitor for hypoglycemia; consider lowering glimepiride dose | major (DrugReax) 3-moderate (CP) |
glyburide, TZDs | bosentan | increased risk of elevated liver enzymes when used concurrently; bosentan, a CYP2C9 and CYP3A4 inducer, may decrease glyburide and TZD levels/reduce hypoglycemic effects; glyburide, rosiglitazone metabolized by CYP2C9, pioglitazone metabolized by CYP3A4 | combined therapy contraindicated; choose alternative ADA | glyburide -1-severe; TZDs - 2-major (CP) glyburide -contraindicated (DrugReax) |
linagliptin | CYP3A4 and p-glycoprotein inducers | combined therapy may significantly decrease linagliptin concentrations decrease efficacy; linagliptin metabolized by CYP3A4 | administer cautiously together; monitor serum glucose levels | rifampin, rifabutin, phenobarbital, phenytoin, carbamazepine, St. John’s wort - major (DrugReax) others - moderate (DrugReax) |
meglitinides, sulfonylureas, TZDs | CYP2C8 Inducers (e.g. rifamycins) | combined therapy may result in reduced ADA serum levels and loss of hypoglycemic control due to enhanced ADA hepatic metabolism by rifamycin | closely monitor serum glucose levels; adjust ADA dose as necessary | moderate (DrugReax) 4-minor (CP) |
metformin | dofetilide | increased risk of lactic acidosis; dofetilide decreases metformin elimination by competing for renal tubular transport system; potential for increased dofetilide serum concentrations and cardiotoxicity risk | manufacturer recommends avoiding concurrent use | 1-severe (CP) major (DrugReax) |
pioglitazone | tolvaptan | combined therapy may decreases tolvaptan concentrations; pioglitazone is CYP3A4 inducer, tolvaptan is metabolized by CYP3A4 | avoid concurrent use if possible; if combined therapy necessary, increase tolvaptan dose and monitor efficacy | major (DrugReax) |
repaglinide, TZDs | Strong CYP2C8 inhibitors (e.g. gemfibrozil, clopidogrel) | combined therapy increases potential for elevated repaglinide or TZD levels/amplified repaglinide or TZD hypoglycemic effects due to inhibition of CYP2C8; repaglinide, TZDs metabolized by CYP2C8 | avoid concurrent administration; if combination cannot be avoided, use lower repaglinide dose | contraindicated (DrugReax) 1-severe |
repaglinide | CYP3A4 inhibitors (e.g., rifamycins, macrolides, itraconazole) | combined therapy may significantly increase repaglinide concentrations and increase hypoglycemia risk; repaglinide metabolized by CYP3A4 | administer cautiously together; monitor for hypoglycemia; adjust repaglinide dose as necessary | itraconazole-major; others – moderate (DrugReax) 2-major (CP) |
repaglinide | cyclosporine | cyclosporine is CYP3A4 inhibitor, also inhibits uptake of repaglinide into liver by inhibiting OATP1B1, which increases risk of elevated repaglinide levels and hypoglycemia when given concurrently | administer cautiously together; closely monitor glycemic control; adjust repaglinide dose as necessary | 2-major (CP) |
repaglinide | isophane insulin (NPH) | combined therapy caused myocardial ischemia in clinical trials | avoid concurrent administration | 2-major (CP) |
rosiglitazone | nitrates | in clinical trials, increased risk of myocardial ischemia in patients receiving combined therapy | avoid concurrent administration (manufacturer recommendations) | 2-major (CP) |
saxagliptin | CYP3A4/5 inhibitors (e.g., ketoconazole, erythromycin, fluconazole) | combined therapy may increase saxagliptin levels and risk of hypoglycemia; saxagliptin metabolized by CYP3A4/5 | utilize lower saxagliptin dose (2.5 mg daily) with strong CYP3A4/5 inhibitors (e.g., ketoconazole); adjunctive therapy with moderate CYP3A4/5 inhibitors does not warrant dosage adjustments | 2-major (CP) |
sulfonylureas | methotrexate | concurrent administration may result in methotrexate displacement from protein binding sites and increased risk of methotrexate toxicity | consider avoiding combination; watch for signs of toxicity | 2-major (CP) |
sulfonylureas | sulfonamides | combined therapy may exaggerate sulfonylurea hypoglycemic effects; sulfonamides may inhibit sulfonylurea metabolism or displace sulfonylurea from protein binding site; glipizide, glyburide not significantly affected due to nonionic binding of these agents | use combination cautiously; closely monitor serum glucose levels, observe for signs/symptoms of hypoglycemia, reduce sulfonylurea dose as necessary | moderate (DrugReax) 3-moderate (CP) |
TZDs | insulins | combined therapy associated with increased risk of heart failure and/or edema and myocardial ischemic events | manufacturer recommends avoiding concurrent use | 2-major (CP) |
Legend:
- *CP = Clinical Pharmacology
6. References
- Clinical Pharmacology [database online]. Tampa, FL: Elsevier; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed September 6, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed September 6, 2022.
- Acarbose tablets (Acarbose®) package insert. Heritage Pharmaceuticals, Inc., March 2022.
- Miglitol tablets (Glyset®) package insert. Sun Pharmaceuticals, Inc., January 2020.
- Metformin Hydrochloride tablets package insert. Ascend Laboratories, February 2017.
- Metformin extended-release tablets (Fortamet®) package insert. Shionogi, Inc., March 2021.
- Metformin extended-release tablets (Glumetza®) package insert. Santarus, Inc., August 2019.
- Metformin oral solution (Riomet®) package insert. Sun Pharmaceutical Industries Inc., December 2018.
- Colesevelam tablets and packets for oral suspension (Welchol®) package insert. Cosette, October 2021.
- Alogliptin tablets (Nesina®) package insert. Takeda Pharmaceuticals America, Inc., March 2022.
- Linagliptin tablets (Tradjenta®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., April 2022.
- Saxagliptin tablets (Onglyza®) package insert. AstraZeneca AB, July 2021.
- Sitagliptin tablets (Januvia®) package insert. Merck & Co., Inc., July 2022.
- Bromocriptine tablets (Cycloset®) package insert. Santarus, Inc., November 2020.
- Semaglutide (Rybelsus®) tablets package insert. Novo Nordisk, June 2022.
- Husain M, Birkenfeld AL, Donsmark M, et al. Oral semaglutide and cardiovascular outcomes in patients with type 2 diabetes. New England Journal of Medicine. 2019;381(9):841-851.
- Nateglinide tablets package insert. Modavar Pharmaceuticals, LLC., March 2022.
- Repaglinide tablets package insert. Aurobindo Pharma Limited, February 2022.
- Canagliflozin tablets (Invokana®) package insert. Janssen Pharmaceuticals, Inc., November 2021.
- Dapagliflozin tablets (Farxiga®) package insert. AstraZeneca, July 2022.
- Empagliflozin tablets (Jardiance®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., March 2022.
- Ertugliflozin tablets (Steglatro®) package insert. Merck Sharp & Dohme, LLC., May 2022.
- Glimepiride tablets (Amaryl®) package insert. Sanofi Aventis US, LLC, January 2021.
- Glipizide tablets package insert. Actavis Pharma, Inc., April 2022.
- Glipizide XL extended-release tablets (Glucotrol® XL) package insert. Roerig, November 2021.
- Glyburide tablets package insert. Amneal Pharmaceuticals of New York, LLC., December 2019.
- Glyburide tablets (Glynase®) package insert. Pharmacia and Upjohn Company, LLC., October 2017.
- Pioglitazone tablets (Actos®) package insert. Takeda Pharmaceuticals North America, Inc., December 2021.
- Rosiglitazone tablets (Avandia®) package insert. GlaxoSmithKline, February 2019.
- Alogliptin/metformin hydrochloride tablets (Kazano®) package insert. Takeda Pharmaceuticals America, Inc., March 2022.
- Alogliptin/pioglitazone hydrochloride tablets (Oseni®) package insert. Takeda Pharmaceuticals America, Inc., March 2022.
- Canagliflozin/metformin tablets (Invokamet®) and canagliflozin/metformin extended-release tablets (Invokamet® XR) package insert. Janssen Pharmaceuticals, Inc., November 2021.
- Dapagliflozin/metformin hydrochloride extended-release tablets (Xigduo® XR) package insert. AstraZeneca Pharmaceuticals LP., April 2022.
- Dapagliflozin/saxagliptin tablets (Qtern®) package insert. AstraZeneca Pharmaceuticals LP., March 2022.
- Empagliflozin/linagliptin tablets (Glyxambi®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., March 2022.
- Empagliflozin/metformin hydrochloride tablets (Synjardy®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., March 2022.
- Empagliflozin/metformin hydrochloride extended-release tablets (Synjardy® XR) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., March 2022.
- Empagliflozin/linagliptin/metformin hydrochloride extended-release tablets (Trijardy® XR) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., June 2021.
- Ertugliflozin/metformin hydrochloride tablets (Segluromet®) package insert. Merck & Co., Inc., May 2022.
- Ertugliflozin/sitagliptin phosphate tablets (Steglujan®) package insert. Merck Sharp & Dohme, LLC., June 2022.
- Glipizide/metformin hydrochloride tablets package insert. Heritage Pharmaceuticals Inc., December 2020.
- Glyburide/metformin hydrochloride tablets package insert. Actavis Pharma, Inc., May 2020.
- Linagliptin/metformin hydrochloride tablets (Jentadueto®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., April 2022.
- Linagliptin/metformin hydrochloride extended-release tablets (Jentadueto® XR) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., October 2021.
- Glimepiride/pioglitazone tablets (Duetact®) package insert. Takeda Pharmaceuticals America, Inc., December 2021.
- Metformin hydrochloride/pioglitazone hydrochloride tablets (Actoplus Met®) package insert. Takeda Pharmaceuticals America, Inc., December 2021.
- Saxagliptin/metformin hydrochloride extended-release tablet (Kombiglyze® XR) package insert. AstraZeneca Pharmaceuticals LP., October 2019.
- Sitagliptin/metformin hydrochloride (Janumet®) package insert. Merck & Co., Inc., July 2022.
- Sitagliptin/metformin extended-release tablets (Janumet® XR) package insert. Merck & Co., Inc., July 2022.
- American Diabetes Association. 9. Pharmacologic approaches to glycemic treatment: standards of medical care in diabetes -2022. Diabetes Care. 2022;45(Suppl. 1):S125–S143.
Attention Deficit Disorder/Attention Deficit Hyperactivity Disorder Medications
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- October 21, 2022; September 2020; September 2018; December 2016; March 2015; February 2013; December 2012; May 2011; April 2011; March 2011; July 2008.
- Initially developed
- Oct. 2007
1. Dosage
1.1. Adults
The maximum adult recommended doses for available psychostimulants used in ADD/ADHD management are summarized in Table 1.
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|
amphetamine salts (mixed)*(Adderall®, generic) | 5 mg, 7.5 mg, 10 mg, 12.5 mg, 15 mg, 20 mg, 30 mg tablets | 60 mg/day |
amphetamine salts (mixed)*(Adderall XR®, generic) | 5 mg, 10 mg, 15 mg, 20 mg, 25 mg, 30 mg ER capsules | 20 mg/day |
amphetamine salts, mixed* (Mydayis®) | 12.5 mg, 25 mg, 37.5 mg, 50 mg ER capsules | 50 mg/day |
amphetamine (Adzenys XR-ODT®) | 3.1 mg, 6.3 mg, 9.4 mg, 12.5 mg, 15.7 mg, 18.8 mg extended-release (ER) orally disintegrating tablets | 12.5 mg once daily |
amphetamine (Dyanavel® XR) | 5 mg, 10 mg, 15 mg, 20 mg ER tablets; 2.5 mg/mL ER oral suspension | 20 mg once daily |
dexmethylphenidate (Focalin®, generic) | 2.5 mg, 5 mg, 10 mg tablets | 20 mg/day |
dexmethylphenidate (Focalin® XR, generic) | 5mg, 10 mg, 15 mg, 20 mg, 25 mg, 30 mg, 35 mg, 40 mg ER tablets | 40 mg/day |
dextroamphetamine (Xelstrym®) | 4.5 mg/9 hours, 9 mg/9 hours, 13.5 mg/ 9 hours, 18 mg/9 hours transdermal system | 18 mg/9 hours daily |
lisdexamfetamine (Vyvanse®) | 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 70 mg capsules; 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg chewable tablets | 70 mg/day |
methylphenidate (Adhansia XR®) | 25 mg, 35 mg, 45 mg, 55 mg, 70 mg, 85 mg ER capsules | 100 mg/ day |
methylphenidate (Aptensio XR®) | 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg ER capsules | 60 mg/day |
methylphenidate (Concerta®, generic) | 18 mg, 27 mg, 36 mg, 54 mg ER tablets | 72 mg/day |
methylphenidate (Jornay PM®) | 20 mg, 40 mg, 60 mg, 80 mg, 100 mg ER capsules | 100 mg/ day |
methylphenidate (Metadate® CD, generic) | 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg ER capsules | 60 mg/day |
methylphenidate (generic) | 10 mg, 20 mg ER tablets | 60 mg/day |
methylphenidate (Methylin®, generic) | 5 mg/5 mL (500 mL); 10 mg/5 mL (500 mL) IR oral solution | 60 mg/day |
methylphenidate (generic) | 2.5 mg, 5 mg, 10 mg immediate-release (IR) chewable tablets | 60 mg/day |
Methylphenidate (Relexxii®) | 18 mg, 27 mg, 36 mg, 45 mg, 54 mg, 63 mg, 72 mg ER tablets | 72 mg/day |
methylphenidate (Ritalin®, generic) | 5 mg, 10 mg, 20 mg IR tablets | 60 mg/day |
methylphenidate (Ritalin® LA, generic) | 10 mg, 20 mg, 30 mg, 40 mg, 60 mg (generic only) ER capsules | 60 mg/day |
methylphenidate (generic) | 20 mg sustained-release tablets | 60 mg/day |
methylphenidate (QuilliChew ER®) | 20 mg, 30 mg, 40 mg ER chewable tablets | 60 mg/day |
methylphenidate (Quillivant XR®) | 300 mg/60 ml, 600 mg/120 ml, 750 mg/150 ml, 900 mg/180 ml ER suspension | 60 mg/day |
serdexmethylphenidate & dexmethylphenidate (Azstarys®) | 26.1 mg/5.2 mg, 39.2 mg/7.8 mg, 52.3 mg/10.4 mg capsules | 52.3 mg/10.4 mg/ day |
Legend:
- * Mixed amphetamine salts are a 1:1:1:1 combination of dextroamphetamine sulfate, dextroamphetamine saccharate, amphetamine aspartate monohydrate and amphetamine sulfate
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|
atomoxetine (Strattera®, generics) | 10 mg, 18 mg, 25 mg, 40 mg, 60 mg, 80 mg, 100 mg capsules | 100 mg/day |
viloxazine (Qelbree®) | 100 mg, 150 mg, 200 mg ER capsules | 600 mg/day |
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|
guanfacine (Intuniv®, generics) | 1 mg, 2 mg, 3 mg, 4 mg ER tablets | 7 mg/day |
1.2. Pediatrics
Many ADHD medications are FDA-approved for use in pediatric patients. In addition to the maximum FDA recommended doses, there is a column with maximum recommended doses from other medical and pharmacological literature sources. This information is obtained through the Psychotropic Medication Utilization Parameters for Children and Youth in Texas Public Behavioral Health (6th Version)30. The Texas Vendor Drug Program’s Prior Authorization Criteria is set to approve maximum daily doses based off the recommendations outlined within this manual. Tables 3-5 summarize pediatric ADD/ADHD recommended daily doses based upon patient-specific characteristics including age and weight.
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage | Maximum Recommended Dosage (PMUP#) |
---|---|---|---|
amphetamine salts (mixed)* (Adderall®, generic) | 5 mg, 7.5 mg, 10 mg, 12.5 mg, 15 mg, 20 mg, 30 mg tablets | 3 -17 years of age: 40 mg/day |
|
amphetamine salts, mixed* (Adderall XR®, generic) | 5 mg, 10 mg, 15 mg, 20 mg, 25 mg, 30 mg ER capsules |
|
|
amphetamine salts, mixed* (Mydayis®) | 12.5 mg, 25 mg, 37.5 mg, 50 mg ER capsules | 13-17 years of age: 25 mg/day | greater than or equal to 13 years of age: 25 mg/day |
amphetamine (Adzenys XR-ODT®) | 3.1 mg, 6.3 mg, 9.4 mg, 12.5 mg, 15.7 mg, 18.8 mg extended-release oral disintegrating tablets |
|
|
amphetamine (Dyanavel XR®) | 5 mg, 10 mg, 15 mg, 20 mg ER tablets; 2.5 mg/mL ER oral suspension | 6-17 years of age: 20 mg/day | 6-17 years of age: 20 mg/ day |
amphetamine sulfate (Evekeo®) | 5 mg, 10 mg tablets | 3 -17 years of age: 40 mg/day | 3 -17 years of age: 40 mg/day |
amphetamine sulfate (Evekeo ODT®) | 5 mg, 10 mg, 15 mg, 20 mg oral disintegrating tablets | 3 -17 years of age: 40 mg/day | N/A |
dexmethylphenidate (Focalin®, generic) | 2.5 mg, 5 mg, 10 mg tablets | 6-17 years of age: 20 mg/day | greater than or equal to 6 years of age: 50 mg/day |
dexmethylphenidate (Focalin® XR, generic) | 5 mg, 10 mg, 15 mg, 20 mg, 25 mg, 30 mg, 35 mg, 40 mg ER tablets | 6-17 years of age: 30 mg/day | greater than or equal to 6 years of age: 50 mg/day |
dextroamphetamine (Dexedrine®, generic) | 5 mg, 10 mg tablets | 3-16 years of age: 40 mg/day |
|
dextroamphetamine (Dexedrine® Spansules, generic) | 5 mg, 10 mg, 15 mg ER capsules | 6-17 years of age: 40 mg/day |
|
dextroamphetamine (ProCentra®, generic) | 5 mg/5 ml oral solution | 3-16 years of age: 40 mg/day |
|
dextroamphetamine (Xelstrym®) | 4.5 mg/9 hours, 9 mg/9 hours, 13.5 mg/ 9 hours, 18 mg/9 hours transdermal system | 6-17 years of age: 18 mg/ 9 hours patch daily | N/A |
dextroamphetamine (Zenzedi®) | 2.5 mg, 5 mg, 7,.5 mg, 10 mg, 15 mg, 20 mg, 30 mg tablets | 3-16 years of age: 40 mg/day |
|
lisdexamfetamine (Vyvanse®) | 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 70 mg capsules; 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg chewable tablets | 6-17 years of age: 70 mg/day |
|
methamphetamine (Desoxyn®, generic) | 5 mg tablets | 6-17 years of age: 25 mg/day | N/A |
methylphenidate (Adhansia XR®) | 25 mg, 35 mg, 45 mg, 55 mg, 70 mg, 85 mg ER capsules | 6-17 years of age: 85 mg/day | N/A |
methylphenidate (Aptensio XR®) | 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg ER capsules | 6-17 years of age: 60 mg/day | † |
methylphenidate (Concerta®, generic) | 18 mg, 27 mg, 36 mg, 54 mg ER tablets | 6-12 years of age: 54 mg/day |
|
methylphenidate (Cotempla XR-ODT®) | 8.6 mg, 17.3 mg, 25.9 mg orally disintegrating tablets | 6-17 years of age: 51.8 mg/day | 6-17 years of age: 51.8 mg/day |
methylphenidate (Daytrana®) | 10 mg/9h, 15 mg/9h, 20 mg/9h, 30 mg/ 9h transdermal patches | 6-17 years of age: 30 mg/9 h/day |
|
methylphenidate (Jornay PM®) | 20 mg, 40 mg, 60 mg, 80 mg, 100 mg ER capsules | 6-17 years of age: 100 mg/day | greater than or equal to6 years of age: 100 mg once daily given in the evening |
methylphenidate (Metadate® CD, generic) | 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg ER capsules | 6-17 years of age: 60 mg/day | † |
methylphenidate (generic) | 10 mg, 20 mg ER tablets | 6-17 years of age: 60 mg/day | † |
methylphenidate (Methylin®, generic) | 5 mg/5 mL (500 mL); 10 mg/5 mL (500 mL) IR oral solution | 6-17 years of age: 60 mg/day | † |
methylphenidate (generic) | 2.5 mg, 5 mg, 10 mg immediate-release (IR) chewable tablets | 6-17 years of age: 60 mg/day | † |
methylphenidate (Relexxii®) | 18 mg, 27 mg, 36 mg, 45 mg, 54 mg, 63 mg, 72 mg ER tablets |
|
N/A |
methylphenidate (Ritalin®, generic) | 5 mg, 10 mg, 20 mg IR tablets | 6-17 years of age: 60 mg/day | † |
methylphenidate (Ritalin LA®, generic) | 10 mg, 20 mg, 30 mg, 40 mg, 60 mg (generic only) ER capsules | 6-17 years of age: 60 mg/day | † |
methylphenidate (generic) | 20 mg sustained-release tablets | 6-17 years of age: 60 mg/day | † |
methylphenidate (QuilliChew ER®) | 20 mg, 30 mg, 40 mg ER chewable tablets | 6-17 years of age: 60 mg/day | † |
methylphenidate (Quillivant XR®) | 300 mg/60 ml, 600 mg/120 ml, 750 mg/150 ml, 900 mg/180 ml ER suspension | 6-17 years of age: 60 mg/day | † |
serdexmethylphenidate & dexmethylphenidate (Azstarys®) | 26.1 mg/5.2 mg, 39.2 mg/7.8 mg, 52.3 mg/10.4 mg capsules | 6-17 years of age: 52.3 mg/10.4 mg daily | N/A |
serdexmethylphenidate & dexmethylphenidate (Azstarys®) | 26.1 mg/5.2 mg, 39.2 mg/7.8 mg, 52.3 mg/10.4 mg capsules | 6-17 years of age: 52.3 mg/10.4 mg daily | N/A |
Legend:
- # Psychotropic Medication Utilization Parameters
- * Mixed amphetamine salts are a 1:1:1:1 combination of dextroamphetamine sulfate, dextroamphetamine saccharate, amphetamine aspartate monohydrate and amphetamine sulfate
- † PMUP recommends the following literature based maximum methylphenidate dosing:
- 3-5 years of age: 22.5 mg/day
- Greater than or equal to 6 years of age & less than or equal to50 kg: 60 mg/day
- Greater than or equal to 6 years of age & greater than 50 kg: 100 mg/day
- Any dose of methylphenidate exceeding 60 mg/day should be used with caution, and with attentive monitoring
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage | Maximum Recommended Dosage (PMUP#) |
---|---|---|---|
atomoxetine (Strattera®, generics) | 10 mg, 18 mg, 25 mg, 40 mg, 60 mg, 80 mg 100 mg capsules |
|
greater than or equal to 6 years of age: 1.8 mg/kg/day or 100 mg/day, whichever is less |
viloxazine (Qelbree®) | 100 mg, 150 mg, 200 mg | 6-17 years of age: 400 mg/day | N/A |
Legend:
- # Psychotropic Medication Utilization Parameters
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage | Maximum Recommended Dosage (PMUP#) |
---|---|---|---|
clonidine (Kapvay®) | 0.1 mg ER tablets | 6-17 years of age: 0.4 mg/ day | Greater than 6 years of age: 0.4 mg/ day |
guanfacine (Intuniv®, generic) | 1 mg, 2 mg, 3 mg, 4 mg ER tablets |
|
|
Legend:
- # Psychotropic Medication Utilization Parameters
2. Duration of Therapy
Attention-deficit/hyperactivity disorder (ADHD) is defined in DSM-V-TR as a persistent pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development41 . While many of the approved medications improve inattention, hyperactivity, and impulsivity, symptoms may persist lifelong with less pronounced hyperactivity. Therefore, treatment often lasts well into adulthood, and ADHD is considered a chronic disorder.
3. Duplicative Therapy
The use of two or more psychostimulants concurrently for ADD/ADHD management is not justified. Additional therapeutic benefit is not realized when ADHD stimulant medications are used in combination. Additionally, guanfacine extended-release tablets should not be prescribed concurrently with other guanfacine-containing products due to increased risks of additive pharmacologic/adverse effects, including hypotension. Extended-release guanfacine and extended-release clonidine have supporting evidence and FDA approval for use as adjunctive therapy with stimulant medications. Additionally, there is limited evidence supporting the efficacy and safety of using atomoxetine as adjunctive therapy to stimulant medications in the management of ADHD.42 Patient profiles documenting receipt of multiple ADHD medications or multiple guanfacine-containing products will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens that may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically significant for ADD/ADHD medications are summarized in Table 7. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level* |
---|---|---|---|---|
amphetamines, amphetamine-related compounds, dexmethylphenidate, methylphenidate, serdexmethylphenidate | antihypertensive agents | combined administration decreases hypotensive effect of antihypertensive agents | closely monitor blood pressure and adjust antihypertensive therapy doses as necessary | 2- major (CP) |
amphetamines, amphetamine-related compounds | CYP2D6 Inhibitors | co-administration results in increased exposure to amphetamine and amphetamine related compounds | initiate at lower doses and monitor for signs and symptoms of serotonin syndrome, particularly after initiation and after dose increases. If serotonin syndrome occurs discontinue amphetamine or amphetamine related compound and CYP2D6 inhibitor | 3- moderate (CP) major-(Micromedex) |
amphetamines, amphetamine-related compounds, dexmethylphenidate, methylphenidate, serdexmethylphenidate | monoamine oxidase inhibitors (MAOIs) and drugs with MAOI-like actions (e.g., procarbazine) | combined administration increases risk of enhanced vasopressor effects and hypertensive crisis due to increased norepinephrine availability; amphetamines, dexmethyl-phenidate, and methylphenidate potentiate catecholamine neurotransmitter effects, while MAOIS block catecholamine degradation and increase norepinephrine levels at nerve receptor sites | concurrent administration as well as amphetamine, dexmethyl-phenidate, methylphenidate, or serdexmethylphenidate administration within 14 days of MAOI use is contraindicated | contraindicated (DrugReax) 1-severe (CP) |
amphetamines, amphetamine-related compounds | phenothiazines | co-administration results in decreased effectiveness of both drug classes | avoid combination, if possible | 2-major (CP) major (DrugReax) |
amphetamines, amphetamine-related compounds | SSRIs, SNRIs | combined administration may produce additive pharmacologic effects and increase risk of serotonin syndrome as amphetamines may stimulate serotonin release in central nervous system (CNS) | administer cautiously together and observe for signs/ symptoms of serotonin syndrome; discontinue therapy and treat as necessary if serotonin syndrome develops | major (DrugReax) 2-major (CP) |
amphetamines, amphetamine-related compounds | TCAs | adjunctive administration may potentiate amphetamine pharmacologic/ adverse effects including hypertension, other cardiac effects, and CNS stimulation due to additive effects on norepinephrine release/activity | administer combination cautiously; observe for increased adverse effects | moderate (DrugReax) 2-major (CP) |
amphetamines, amphetamine-related compounds | urinary alkalinizers | combination results in increased renal tubular absorption of amphetamines and amphetamine-related compounds, decreased urinary excretion and the potential for enhanced amphetamine therapeutic/ adverse effects | combination should be avoided | 2-major (CP) moderate (DrugReax) |
atomoxetine | albuterol | combined administration may produce increased heart rate, blood pressure due to unknown mechanism | administer combination cautiously; monitor blood pressure and heart rate | major (DrugReax) 3-moderate (CP) |
atomoxetine | MAOIs | co-administration may result in additive serotonergic effects/ increased risk of serotonin syndrome as atomoxetine inhibits serotonin reuptake and MAOIs inhibit catecholamine breakdown | concomitant administration as well as atomoxetine administration within 14 days of MAOI use contraindicated | contraindicated (DrugReax) 1-severe (CP) |
clonidine | mirtazapine | co-administration may result in hypertension | monitor for signs of intense sweating, facial flushing, frequent headaches, racing, or pounding heartbeat | major (DrugReax) |
clonidine | beta blockers | co-administration may result in sinus bradycardia & exaggerated clonidine withdrawal response | monitor heart rate when combined with beta blocker therapy. Gradual withdrawal of beta blocker recommended before discontinuing clonidine | major (DrugReax) |
clonidine | calcium channel blockers | co-administration may result in sinus bradycardia | monitor heart rate when combined with calcium channel blocker therapy | major (DrugReax) |
dexmethylphenidate, methylphenidate, serdexmethylphenidate | risperidone | concomitant administration may increase risk of extrapyramidal symptoms during doses changes of either medication | monitor for signs of extrapyramidal symptoms | major (Micromedex) |
dexmethylphenidate, methylphenidate, serdexmethylphenidate | halogenated anesthetics | Concomitant use may increase risk of sudden blood pressure and heart rate increases during surgery | Avoid use in patients being treated with anesthetics on the day of surgery | major (Micromedex) |
dexmethylphenidate, methylphenidate, serdexmethylphenidate | select anticonvulsants [e.g., phenobarbital, hydantoins (e.g., phenytoin) and primidone] | adjunctive administration may increase serum anticonvulsant levels of select anticonvulsants due to unknown mechanism; dexmethylphenidate, methylphenidate may also lower seizure threshold | monitor serum anticonvulsant levels closely and monitor patients for increased adverse effects; adjust anticonvulsant doses as needed; also monitor seizure frequency | moderate (DrugReax) 2-major, 3-moderate (CP) |
dexmethylphenidate, methylphenidate, serdexmethylphenidate | warfarin | co-administration may increase warfarin serum levels and enhance pharmacologic/adverse effects, including bleeding | closely monitor INR with combined therapy and adjust warfarin doses as necessary | moderate (DrugReax) 3-moderate (CP) |
guanfacine | antihypertensive agents | combined administration may result in additive hypotensive effects | closely monitor blood pressure and adjust doses as necessary | 3-moderate (CP) |
guanfacine | CNS depressants | combined administration may result in additive pharmacologic (sedative) effects | administer cautiously together | 3-moderate (CP) |
guanfacine | strong CYP3A4 inhibitors (e.g., ketoconazole) | adjunctive administration may result in increased guanfacine concentrations and the potential for enhanced pharmacologic/ adverse effects as guanfacine is metabolized by CYP3A4 | administer cautiously together and monitor for increased pharmacologic effects (e.g., hypotension, bradycardia, sedation) | unknown |
guanfacine | CYP3A4 inducers (e.g., rifampin, phenytoin) | concurrent administration reduces guanfacine AUC by 70% and may result in decreased guanfacine serum levels and reduced pharmacologic/clinical effects (guanfacine metabolized by CYP3A4) | monitor for loss of guanfacine clinical effects; increased guanfacine doses may be necessary | 3-moderate (CP) |
guanfacine | valproic acid (VA) | combined administration may result in increased VA serum levels, potentially due to competition for glucuronidation metabolic pathway | monitor for additive CNS effects; VA dosage adjustments may be required | unknown |
methylphenidate | bupropion | concurrent use may result in increased seizure risk | if combination is necessary, closely monitor patient | major (DrugReax) 2-major (CP) |
methylphenidate | carbamazepine | co-administration may result in reduced methylphenidate serum levels and decreased pharmacologic effects due to unknown mechanism; methylphenidate may also lower seizure threshold | closely monitor patient response to methylphenidate therapy, monitor seizure frequency, and adjust methylphenidate doses as necessary with this drug combination | moderate (DrugReax) 2-major (CP) |
viloxazine | CYP1A2 substrates, sensitive or narrow therapeutic range | viloxazine is a strong CYP1A2 inhibitor, increasing total exposure to sensitive CYP1A2 substrates | concurrent use is contraindicated | contraindicated (Micromedex) |
viloxazine | CYP1A2 substrates, moderate sensitive | viloxazine is a strong CYP1A2 inhibitor, increasing total exposure to sensitive CYP1A2 substrates | concurrent administration is not recommended. Dose reduction may be warranted if coadministered | major (Micromedex) |
viloxazine | MAOI | increased risk of potentially life-threatening hypertensive crisis | concurrent administration is contraindicated | contraindicated (Micromedex) |
Legend:
- * CP = Clinical Pharmacology, Micromedex, product labeling
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed September 21, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed September 21, 2022.
- Amphetamine mixed salts tablets (Adderall®) package insert. Teva Pharmaceuticals USA, Inc., February 2022.
- Amphetamine mixed salts extended-release capsules (Adderall XR®) package insert. Takeda Pharmaceuticals America, Inc., March 2022.
- Amphetamine mixed salts extended-release capsules (Mydayis®) package insert. Takeda Pharmaceuticals America, Inc., March 2022.
- Amphetamine extended-release orally disintegrating tablets (Adzenys XR-ODT®) package insert. Neos Therapeutics, Inc., March 2022.
- Amphetamine extended-release oral suspension (Dyanavel® XR) package insert. Nextwave Pharmaceuticals, Inc., May 2022.
- Dexmethylphenidate tablets (Focalin®) package insert. Novartis Pharmaceuticals Corp., June 2022.
- Dexmethylphenidate extended-release capsules (Focalin® XR) package insert. Novartis Pharmaceuticals Corp., June 2021.
- Dextroamphetamine transdermal system (Xelstrym®) package insert. Noven Therapeutics, LLC., March 2022.
- Lisdexamfetamine capsule and chewable tablets (Vyvanse®) package insert. Takeda Pharmaceuticals America, Inc., March 2022.
- Methylphenidate extended release capsules (Adhansia XR®) package insert. Adlon Therapeutics LP, July 2022.
- Methylphenidate extended-release capsules (Aptensio XR®) package insert. Rhodes Pharmaceuticals, June 2021.
- Methylphenidate extended-release tablets (Concerta®) package insert. Janssen Pharmaceuticals, Inc., April 2022.
- Methylphenidate extended-release capsules (Jornay PM®) package insert. Ironshore Pharmaceuticals, Inc., March 2022.
- Methylphenidate extended-release capsules (Metadate CD®) package insert. Lannett Company, Inc., April 2022.
- Methylphenidate extended-release tablets package insert. KVK-Tech, Inc., April 2021.
- Methylphenidate oral solution (Methylin®) package insert. Shionogi Pharma, Inc., July 2021.
- Methylphenidate chewable tablets package insert. Camber Pharmaceuticals, Inc., August 2021.
- Methylphenidate extended-release tablets (Relexxii®) package insert. Vertical Pharmaceuticals, LLC. November 2021.
- Methylphenidate tablets (Ritalin®) package insert. Novartis Pharmaceuticals Corp., June 2021.
- Methylphenidate extended-release capsules (Ritalin LA®) package insert. Novartis Pharmaceuticals Corp., June 2021.
- Methylphenidate tablets, extended-release tablets package insert. Ascend Laboratories, LLC., December 2019.
- Methylphenidate extended-release chewable tablets (QuilliChew® XR) package insert. NextWave Pharmaceuticals, Inc. June 2021.
- Methylphenidate extended-release oral suspension (Quillivant® XR) package insert. NextWave Pharmaceuticals, Inc. June 2021.
- Serdexmethylphenidate and dexmethylphenidate capsules (Azstarys®) package insert. Corium, Inc., May 2022.
- Atomoxetine (Strattera®) package insert. Eli Lilly and Company, January 2022.
- Viloxazine extended-release capsules (Qelbree®) package insert. Supernus Pharmaceuticals, Inc., May 2022.
- Guanfacine extended-release tablets (Intuniv®) package insert. Takeda Pharmaceuticals America Inc., January 2021.
- Texas Health and Human Services. Psychotropic medication utilization parameters for children and youth in Texas Public Behavioral Health (6th version). June 2019. Accessed September 22, 2022. Available at: https://www.hhs.texas.gov/sites/default/files/documents/doing-business-with-hhs/provider-portal/facilities-regulation/psychiatric/psychotropic-medication-utilization-parameters.pdf.
- Amphetamine sulfate tablets (Evekeo®) package insert. Arbor Pharmaceuticals. January 2022.
- Amphetamine sulfate oral disintegrating tablets (Evekeo ODT®) package insert. Arbor Pharmaceuticals. March 2022.
- Dextroamphetamine tablets package insert. Aurolife Pharma, LLC., January 2022.
- Dextroamphetamine extended-release capsules (Dexedrine® Spansule) package insert. Amneal Pharmaceuticals, LLC., January 2022.
- Dextroamphetamine oral solution (ProCentra®) package insert. Independence Pharmaceuticals, June 2022.
- Dextroamphetamine tablets (Zenzedi®) package insert. Arbor Pharmaceuticals, LLC, January 2022.
- Methamphetamine tablets (Desoxyn®) package insert. Key Therapeutics, September 2022.
- Methylphenidate extended-release orally disintegrating tablets (Cotempla XR-ODT®) package insert. Neos Therapeutics, Inc., July 2021.
- Methylphenidate transdermal system (Daytrana®) package insert. Noven Pharmaceuticals, June 2021.
- Clonidine extended-release tablets (Kapvay®) package insert. Concordia Pharmaceuticals, Inc., August 2021.
- Diagnostic and Statistical Manual of Mental Disorders: DSM-5-TR. 5th ed., American Psychiatric Association, 2022.
- Wolraich ML, Hagan JF, Allan C, et. al. Subcommittee on Children and Adolescents with Attention-Deficit/Hyperactive Disorder; clinical practice guideline for the diagnosis, evaluation, and treatment of attention-deficit/hyperactivity disorder in children and adolescents. Pediatrics. October 2019; 144 (4): e20192528. 10.1542/peds.2019-2528.
Atypical Anti-psychotics (long-acting injectable)
Atypical Anti-psychotics (long-acting injectable) - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Oct. 13, 2023
- Oct. 22, 2021
- Sept. 2019
- Initially developed
- Sept. 2017
1. Dosage
1.1. Adults
Long-acting injectable (LAI) second generation (atypical) antipsychotics are FDA-approved drugs to treat psychiatric disorders. All of the LAI atypical antipsychotics are used to treat schizophrenia1-14 . Invega Sustenna has an additional indication
for treating schizoaffective disorder 1-3. Both Abilify Maintena, Abilify Asimtufii, Risperdal Consta, and Rykindo have an additional indication for treating bipolar I disorder1,2,4-7. Invega Hafyera is approved for the management of schizophrenia in adult patients, and it is administered every six months1,2,12. Perseris is a monthly injection of risperidone approved for the management of schizophrenia in adults1,2,14. Aristada Initio was approved for the initiation of Aristada, and is only given once in combination with single 30 mg oral dose of aripiprazole1,2,9,10. Recommended treatment dosages for LAI atypical antipsychotics are summarized in Table 1.
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
Aripiprazole (Abilify Asimtufii) | 720 mg, 960 mg intramuscular (IM) injection | Schizophrenia, bipolar I disorder (maintenance therapy) | 960 mg IM once every two months |
Aripiprazole (Abilify Maintena) | 300 mg, 400 mg intramuscular (IM) injection | Schizophrenia, bipolar I disorder (maintenance therapy) | 400 mg IM once monthly |
Aripiprazole lauroxil (Aristada, Aristada Initio) | 441 mg, 662 mg, 675 mg, 882 mg, 1064 mg IM injection | Schizophrenia | 1064 mg IM every two months |
Olanzapine (Zyprexa Relprevv) | 210 mg, 300 mg, 405 mg IM injection | Schizophrenia | 300 mg IM every two weeks or 405 mg every 4 weeks |
Paliperidone palmitate (Invega Hafyera) | 1,092 mg, 1,560 mg IM injection | Schizophrenia in patients who have been treated on Invega Sustenna for at least four months or Invega Trinza for at least one three month cycle | 1,560 mg IM every 6 months |
Paliperidone palmitate (Invega Sustenna) | 39 mg, 78 mg, 117 mg, 156 mg, 234 mg IM injection | Schizophrenia, schizoaffective disorder | 234 mg IM once monthly |
Paliperidone palmitate (Invega Trinza) | 273 mg, 410 mg, 546 mg, 819 mg IM injection | Schizophrenia in patients who have been treated on Invega Sustenna® for at least four months | 819 mg IM once every 3 months |
Risperidone (Perseris) | 90 mg, 120 mg IM injection | Schizophrenia | 120 mg IM every month |
Risperidone (Risperdal Consta) | 12.5 mg, 25 mg, 37.5 mg, 50 mg IM injection | Schizophrenia, bipolar I disorder (maintenance therapy) | 50 mg IM every 2 weeks |
Risperidone (Rykindo) | 25 mg, 37.5 mg, 50 mg IM injection | Schizophrenia, bipolar I disorder (maintenance therapy) | 50 mg IM every 2 weeks |
Risperidone (Uzedy) | 50 mg, 75 mg, 100 mg, 125 mg, 150 mg, 200 mg, 250 mg subcutaneous (SubQ) injection | Schizophrenia | 125 mg SubQ once monthly or 250 mg SubQ every 2 months |
Abilify Maintena and Abilify Asimtufii dosages must be modified in patients prescribed CYP3A4 or CYP2D6 inhibitors, or in those patients identified as CYP poor metabolizers. Abilify Maintena and Abilify Asimtufii should be avoided in patients prescribed CYP3A4 inducers concurrently1,2,4,5. Abilify Asumtufii should be avoided in patients taking CYP2D6 and CYP3A4 inhibitors concurrently. Recommended Abilify Maintena and Abilify Asumtufii dosages when prescribed concurrently with CP450-modifying medications are summarized in Table 2.
Factors | Dosage Adjustment |
---|---|
Abilify Maintena® 300 mg intramuscular administration | |
Strong CYP3A4 or CYP2D6 inhibitor (greater than 14 days) | Reduce to 200 mg |
CYP3A4 and CYP2D6 inhibitor together (greater than 14 days) | Reduce to 160 mg |
CYP3A inducer (greater than 14 days) | Avoid use |
Abilify Maintena® 400 mg intramuscular administration | |
Strong CYP3A4 or CYP2D6 inhibitor (greater than 14 days) | Reduce to 300 mg |
CYP3A4 and CYP2D6 inhibitor together (greater than 14 days) | Reduce to 200 mg |
CYP3A inducer (greater than 14 days) | Avoid use |
Abilify Maintena® in CYP2D6 poor metabolizers | |
Known CYP2D6 poor metabolizers | Reduce to 300 mg |
Known CYP2D6 poor metabolizer taking a CYP3A4 inhibitor | Reduce to 200 mg |
Abilify Asumtufii® 960 mg intramuscular administration | |
Concomitant use with strong CYP2D6 inhibitors | 720 mg once every 2 months |
Concomitant use with strong CYP3A4 inhibitors | 720 mg once every 2 months |
Concomitant use with strong CYP2D6 inhibitors and strong CYP3A4 inhibitors | Avoid use |
Concomitant use with CYP3A4 inducers | Avoid use |
Abilify Asumtufii in CYP2D6 poor metabolizers | |
Known CYP2D6 poor metabolizers | 720 mg once every 2 months |
nown CYP2D6 poor metabolizers taking concomitant CYP3A4 inhibitors | Avoid use |
Aristada dosages must be modified in patients prescribed CYP3A4 or CYP2D6 inhibitors as well as CYP3A4 inducers concurrently. Aristada Initio only comes in one dosage strength, and it should be avoided in patients who are known CYP2D6 poor metabolizers or taking strong CYP3A4 inhibitors, strong CYP2D6 inhibitors, or strong CYP3A4 inducers.1,2,9,10 Recommended Aristada dosages when prescribed concurrently with CP450-modifying medications are summarized in Table 3.
Factors | Dosage Adjustment |
---|---|
Strong CYP3A inhibitor | Reduce Aristada dose to the next lowest strength; if patient is taking 441 mg, no dosage adjustment required |
Strong CYP2D6 inhibitor | Reduce Aristada dose to next lowest strength; if patient is taking 441 mg, no dosage adjustment required |
Known CYP2D6 poor metabolizer taking a strong CYP3A inhibitor | If patient is taking 662 or 882 mg, reduce the dose to 441 mg; if patient is taking 441 mg, no dosage adjustment required |
Known CYP2D6 poor metabolizer taking a strong CYP2D6 inhibitor | No dose adjustment needed |
Both a strong CYP2D6 inhibitor and CYP3A inhibitor | Avoid using in patients who are taking 662 or 882 mg; if patient is taking 441 mg, no dosage adjustment needed |
CYP3A4 inducers | No dose adjustment is needed for the 662 mg or 882 mg dosages; if patient is taking 441 mg, increase dose to 662 mg |
Aristada Initio should be avoided in patients who are known CYP2D6 poor metabolizers or taking strong CYP3A4 inhibitors, strong CYP2D6 inhibitors, or strong CYP3A4 inducers.
1.2. Pediatrics
Safety and efficacy of LAI atypical antipsychotics for use in children younger than 18 years of age have not been established 1-14. The Psychotropic Medication Utilization Parameters for Children and Youth in Texas Public Behavioral Health (6th Version) does not provide dosing recommendations for long-acting injectable atypical antipsychotics 14.
2. Duration of Therapy
If the patient is tolerating the LAI atypical antipsychotic, then there is no basis for limiting treatment length for approved psychiatric disorders as schizophrenia, schizoaffective disorder, and bipolar I disorder are chronic, lifelong diseases 1-13.
3. Duplicative Therapy
Co-administration of two or more LAI atypical antipsychotics is not justified due to limited additional therapeutic benefit and increased risk of adverse effects 1-13.
Patient profiles containing concomitant prescriptions for two or more LAI atypical antipsychotics will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for LAI atypical antipsychotics are summarized in Table 6. Only those drug-drug interactions classified as clinical significance of severe or those considered life-threatening which have not yet been classified will be reviewed 1-13.
Table 6: Select LAI Atypical Antipsychotic Drug-Drug Interactions
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
Aripiprazole | Citalopram | Increased risk of QT prolongation and serotonin syndrome because aripiprazole is a partial agonist of 5-HT1A and citalopram is a selective serotonin reuptake inhibitor | Avoid use | Major (DrugReax) 2-major(CP) |
Aripiprazole | Strong CYP3A4 inhibitors (e.g., clarithromycin, ketoconazole) | Increased risk of aripiprazole overexposure because aripiprazole is metabolized by CYP3A4 | Monitor patient closely and adjust aripiprazole dosages as needed | Major (DrugReax) 3-moderate (CP) |
Long-acting injectable atypical antipsychotics (LAI AAs) | CNS depressants | Increased risk of respiratory and central nervous system depression due to additive pharmacologic effects | Use cautiously together; observe patients for enhanced CNS adverse effects | Major (DrugReax) 3-moderate (CP) |
LAI AAs | Metoclopramide | Increased risk of extrapyramidal reactions or neuroleptic malignant syndrome | Avoid use | Contraindicated (DrugReax) 1-severe,2-major (CP) |
LAI AAs | QT interval- prolonging medications (e.g. posaconazole) | Increased risk of QT interval prolongation | Avoid use; if combined use necessary, administer cautiously together and monitor closely | Contraindicated (DrugReax) 1-severe,2-major,3-moderate (CP) |
Olanzapine | Agents that lower seizure threshold (e.g. clomipramine) | Increased seizure risk because psychotropic drugs may reduce the seizure threshold | Use caution when administered concomitantly | Major (DrugReax) 3-moderate (CP) |
Atypical antipsychotics | CYP3A4 and CYP1A2 inducers (e.g. carbamazepine) | Concomitant use can lead to decreased serum concentrations of atypical antipsychotics | Monitor treat efficacy and adjust atypical antipsychotic dosages as needed | Major (DrugReax) 2-major (CP) |
Olanzapine (CYP1A2 substrate) | CYP1A2 inhibitor (e.g. fluvoxamine) | Increased olanzapine serum concentrations | Monitor patient closely and adjust olanzapine dosages as needed | Major (DrugReax) 2-major (CP) |
Risperidone | Serotonergic agents (e.g. linezolid) | Increased risk of serotonin syndrome | Monitor patients for serotonin syndrome | Major (DrugReax) 2-major (CP) |
Risperidone, Olanzapine | Lithium | Increased extrapyramidal symptoms; encephalopathy and brain damage have occurred in case reports due to unknown mechanism | Monitor patients closely for symptoms and monitor lithium levels | Major (DrugReax) 3-moderate (CP) |
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: September 11, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed September 11, 2023.
- Paliperidone palmitate extended-release injection suspension (Invega® Sustenna®) package insert. Janssen Pharmaceuticals, July 2022.
- Aripiprazole intramuscular extended-release injection (Abilify Asimtufii®) package insert. Otsuka America Pharmaceutical, Inc., August 2023.
- Aripiprazole intramuscular extended-release injection (Abilify Maintena®) package insert. Otsuka America Pharmaceutical, Inc., February 2023.
- Risperidone long-acting injection (Risperdal Consta®) package insert. Janssen Pharmaceuticals, Inc., February 2021.
- Risperidone extended-release intramuscular microsphere injection (Rykindo®) package insert. Shandong Luye Pharmaceutical Co., ltd., May 2023.
- Risperidone extended-release subcutaneous injection (Uzedy®) package insert. Teva Pharmaceuticals, Inc., May 2023.
- Aripiprazole lauroxil intramuscular extended-release injection (Aristada®) package insert. Alkermes, Inc., March 2021.
- Aripiprazole lauroxil intramuscular extended-release (Aristada Initio®) package insert. Alkermes, Inc., March 2021.
- Olanzapine extended release injectable suspension (Zyprexa® Relprevv™) package insert. Eli Lilly and Company, November 2021.
- Paliperidone palmitate extended-release injection suspension (Invega Hafyera®) package insert. Janssen Pharmaceuticals, August 2021.
- Paliperidone palmitate extended-release suspension (Invega Trinza®) package insert. Janssen Pharmaceuticals, August 2021.
- Risperidone long-acting injection (Perseris®) package insert. Indivior Inc., December 2022.
- The Parameters Workgroup of the Psychiatric Executive Formulary Committee, Health and Specialty Care Division, Texas Health and Human Services Commission. Psychotropic medication utilization parameters for children and youth in Texas public behavioral health (6th version). (June 2019) Available at: https://hhs.texas.gov/sites/default/files/documents/doing-business-with-hhs/provider-portal/facilities-regulation/psychiatric/psychotropic-medication-utilization-parameters.pdf. Accessed September 17, 2023.
Atypical Anti-psychotics (oral)
Atypical Anti-psychotics (oral) - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Oct. 13, 2023
- Oct. 22, 2021
- Sept. 2019
- Sept. 2017
- Sept. 2015
- Dec. 2013
- Feb. 2012
- June 2010
- May 2010
- March 2007
- Dec. 2006
- Oct. 2006
- May 2003
- April 2002
- April 2001
- April 2000
- March 1999
- March 1998
- Initially developed
- Feb. 1997
1. Dosage
1.1. Adults
Oral atypical antipsychotics are FDA-approved for use in schizophrenia, bipolar I disorder (BD), bipolar disorder with mixed episodes or depressive episodes, bipolar mania, schizoaffective disorder (SD), adjunctive therapy in major depressive disorder (MDD), treatment-resistant schizophrenia, and irritability associated with autism.1-14 Cariprazine (Vraylar) is approved to treat schizophrenia and manic or mixed episodes associated with BD.1,15 Aripiprazole tablets with sensors (Abilify MyCite) are approved to track medication com pliance1,16.
Pimavanserin (Nuplazid) is an oral atypical antipsychotic that is indicated for use to manage hallucinations and delusions seen with Parkinson’s disease psychosis1,17. Olanzapine combination therapy is FDA-approved for use in managing treatment-resistant depression as well as acute depressive episodes associated with bipolar I disorder1,18. Secuado (asenapine) Transdermal System is a topical patch that is FDA approved for the management of schizophrenia in adult patients.1, 19 Additionally, Caplyta (lumateperone) is a once daily oral capsule that is FDA approved for the management of schizophrenia in adult patients1,20.
Maximum recommended adult doses for atypical antipsychotics are summarized in Table 1. Dosages exceeding these recommendations will be reviewed.
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
Aripiprazole (Abilify, Abilify MyCite system, generics) |
| Schizophrenia, BD |
|
MDD | 15 mg/day | ||
Asenapine (Saphris®, Secuado® Transdermal System, generics) |
| Schizophrenia, BD |
|
Brexpiprazole (Rexulti®) | 0.25 mg, 0.5 mg, 1 mg, 2 mg, 3 mg, 4 mg tablets | Schizophrenia | 4 mg once daily |
MDD | 3 mg once daily | ||
Agitation associated with dementia due to Alzheimer’s disease | 3 mg once daily | ||
Cariprazine (Vraylar®) | 1.5 mg, 3 mg, 4.5 mg 6 mg capsules | Bipolar major depression, BD (acute mixed/manic episodes), schizophrenia | 6 mg once daily |
BD (acute mixed/manic episodes), schizophrenia | 6 mg once daily | ||
Clozapine (Clozaril, generics, Versacloz) |
| Schizophrenia (treatment-resistant), reducing recurrent suicidal behavior in schizophrenia and schizoaffective disorder (SD) |
|
Iloperidone (Fanapt®) | 1 mg, 2 mg, 4 mg, 6 mg, 8 mg, 10 mg 12 mg IR tablets | Schizophrenia | 24 mg/day, in divided doses |
Lumateperone (Caplyta®) | 10.5 mg, 21 mg, 42 mg capsules | Schizophrenia, bipolar depression | 42 mg/day |
Lurasidone (Latuda®) | 20 mg, 40 mg, 60 mg, 80 mg, 120 mg IR tablets | Schizophrenia | 160 mg/day, with food (at least 350 calories) |
Bipolar depression | 120 mg/day, with food (at least 350 calories) | ||
Olanzapine (Zyprexa®, Zyprexa Zydis®, generics) | 2.5 mg, 5 mg, 7.5 mg, 10 mg, 15 mg, 20 mg IR tablets | Schizophrenia, BD, treatment-resistant depression | 5 mg, 10 mg, 15 mg, 20 mg ODTs 20 mg/day, as a single dose |
Paliperidone (Invega®) | 1.5 mg, 3 mg, 6 mg, 9 mg extended-release (ER) tablets | Schizophrenia, SD | 12 mg/day |
Pimavanserin (Nuplazid®) | 10 mg tablets, 34 mg capsules | Hallucinations and delusions associated with Parkinson’s disease psychosis | 34 mg once daily |
Quetiapine (Seroquel®, Seroquel XR®, generics) |
| Schizophrenia, BD (acute manic episodes, maintenance) |
|
Schizophrenia | 750 mg/day, in two or three divided doses | ||
Bipolar depression |
| ||
Quetiapine (Seroquel XR®, generics) | MDD | ER: 300 mg/day, as a single dose | |
Risperidone (Risperdal®, Risperdal M-TAB®, generics) |
| Schizophrenia | 8 mg/day in 1 or 2 divided doses * |
Bipolar mania | 6 mg/day | ||
Ziprasidone (Geodon®, generics) | 20 mg, 40 mg, 60 mg, 80 mg IR capsules | Schizophrenia | 200 mg/day, in two divided doses + |
BD | 160 mg/day, in two divided doses |
Legend:
- # ingestible event marker (IEM) embedded in each MyCite® tablet; to be dispensed with MyCite® patch (wearable sensor that detects signal frim IEM sensor) and MyCite App
- * doses up to 16 mg/day have demonstrated efficacy in clinical trials; however, doses of 4 to 8 mg/day tended to produce the maximal effect
- + doses up to 320 mg daily have been used safely but greater efficacy not noted with higher dosages
Lybalvi is an oral combination product containing olanzapine and samidorphan that is FDA approved for the management of acute mixed or manic episodes in bipolar 1 disorder, maintenance therapy in bipolar 1 disorder, and for the management of schizophrenia1,21. Samidorphan that binds to mu, kappa, and delta opioid receptors. Samidorphan is a mu-opioid receptor antagonist, and it demonstrates partial agonist activity on kappa, and delta-opioid receptors. The major metabolites of samidorphan also have an affinity for opioid receptors, however, neither metabolite is thought to contribute to the pharmacologic effects of the drug1, 21. Doses exceeding the maximum adult recommended doses summarized in Table 2 will be reviewed.
Drug Name | Available Dosage Strengths | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
Olanzapine/ fluoxetine (Symbyax, generics ) |
| Bipolar depression, treatment-resistant depression | Olanzapine 18 mg/ fluoxetine 75 mg once daily in evening, without regard to meals |
Olanzapine/ samidorphan (Lybalvi®) |
| Schizophrenia, BD | Olanzapine 20 mg/ samidorphan 10 mg once daily |
1.2. Pediatrics
Risperidone is FDA-approved to manage symptoms of irritability in autistic children greater than 5 years of age and adolescents, and is approved for bipolar mania in children and adolescents 10 to 17 years of age and schizophrenia in adolescents 13 to 17 years of age1,6. Aripiprazole is FDA approved for treating Tourette’s disorder in pediatric patients 6 to 18 years of age, and is also FDA-approved for managing schizophrenia in adolescents 13 to 17 years of age, bipolar disorder with or without psychotic features in children 10 to 17 years of age, and irritability associated with autistic disorder in children 6 to 17 years of age1,9. Olanzapine is FDA approved for bipolar disorder and schizophrenia in adolescents 13 years of age and older.1,10 Olanzapine is also FDA approved to treat depressive episodes associated with bipolar 1 disorder in patients 10 years of age and older when used in combination with fluoxetine1,18. Quetiapine is FDA approved for acute treatment of bipolar disorder mania episodes in children and adolescents 10 to 17 years of age and schizophrenia management in adolescents 13 to 17 years of age1,11,12. Paliperidone is approved FDA for the management of schizophrenia in adolescents 12 to 17 years of age1,8. Lurasidone is approved for the management of depressed phase bipolar disorder in children 10 to 17 years of age, and it is approved for the management of schizophrenia in patients 13 to 17 years of age1,13. Cariprazine, clozapine, iloperidone, lumateperone, ziprasidone, and aripiprazole tablets with sensors (Abilify MyCite) are not recommended for use in pediatric patients as safety and efficacy have not been established in this patient population. Additionally, pimavanserin is not approved for use in pediatric patients as Parkinson’s disease is typically not observed in pediatric patients, and safety and efficacy data are not available for pimavanserin in the pediatric population1-3,5,7,15-17,20.
Atypical antipsychotic pediatric dosages are summarized in Table 3. An additional column reflecting literature-based dosing included in the Texas Health and Human Services Psychotropic Medication Utilization Parameters for Children and Youth in Texas Public Behavioral Health (6th Version) is included in Tables 3 and 422.
Drug Name | Available Dosage Strengths | Treatment Indication | Literature Based Maximum Dosage | FDA Approved Maximum Recommended Dosage |
---|---|---|---|---|
Aripiprazole (Abilify,generics) |
| Schizophrenia |
| 13-17 years of age: 30 mg once daily |
BD | 10-17 years of age: 30 mg once daily | |||
Tourette’s disorder | 6-18 years of age:
| |||
Irritability associated with autism | 6-17 years of age: 15 mg/day as a single dose | |||
Asenapine (Saphris®) | 2.5 mg, 5 mg, 10 mg sublingual tablets | BD | Age greater than or equal to 10 years: 10 mg twice daily | 10-17 years of age: 20 mg/day, in two divided doses |
Brexpiprazole (Rexulti) | 0.25 mg, 0.5 mg, 1 mg, 2 mg, 3 mg, 4 mg tablets | Schizophrenia | Age 13-17 years: 4 mg/ day | |
Clozapine (Clozaril, generics, Versacloz) |
| Reserved for treatment resistant psychosis, following two failed trials of antipsychotic therapy with adequate dose/ duration |
| Not approved for children or adolescents |
Lurasidone (Latuda®) | 20 mg, 40 mg, 60 mg, 80 mg IR tablets | Schizophrenia, BD |
| 13 to 17 years of age: 80 mg/day, with food (at least 350 calories) |
Olanzapine (Zyprexa®, Zyprexa Zydis®, generics) |
| Schizophrenia, BD |
| 13 to 17 years of age: 20 mg once daily |
Paliperidone (Invega®) | 1.5 mg, 3 mg, 6 mg, 9 mg extended-release (ER) tablets | Schizophrenia | Adolescents (age greater than or equal to 12 years), schizophrenia:
| 12-17 years of age:
|
Quetiapine (Seroquel, generics, Seroquel XR) |
| BD - acute manic episodes |
| 10 to 17 years of age: 600 mg daily, once daily (ER tablets) or in 2 to 3 divided doses (IR tablets) |
Schizophrenia | 13 to 17 years of age: 800 mg daily, once daily (ER tablets) or in 2 to 3 divided doses (IR tablets) | |||
Risperidone (Risperdal, generics) |
| Bipolar mania |
| 10-17 years of age: 6 mg daily |
Schizophrenia | 13-17 years of age: 6 mg daily | |||
Irritability in autistic disorder | 5-17 years of age: 3 mg/day (no dosing data available for pediatric patients less than 15 kg) | |||
Ziprasidone (Geodon, generics) | 20 mg, 40 mg, 60 mg, 80 mg IR capsules | BP | Bipolar Disorder (age10-17 years)
| Not approved for children or adolescents |
The olanzapine/fluoxetine combination has been approved for use in pediatric patients 10-17 years of age with depression associated with BD1,18. Recommended pediatric dosages are summarized in Table 4.
Drug Name | Available Dosage Strengths | Literature Based Maximum Dosage | Treatment Indication | Maximum Recommended Dosage per Age Group |
---|---|---|---|---|
Olanzapine/ fluoxetine (Symbyax, generics) |
| Age 10-17 years: 12 mg olanzapine/50 mg fluoxetine once daily | Bipolar depression | 10-17 years of age: olanzapine 12 mg/ fluoxetine 50 mg once daily in evening, without regard to meals |
2. Duration of Therapy
Atypical antipsychotics are indicated for use in the management of schizophrenia and psychotic disorders. Therefore, there is no basis for limiting treatment duration with these atypical antipsychotics as these agents are utilized in the management of chronic disorders 1-44.
3. Duplicative Therapy
Combined therapy with multiple antipsychotic medications were evaluated in patients with treatment-resistant schizophrenia. Open studies, case reports, and clinical trials have observed favorable results following concurrent therapy with either atypical antipsychotics plus conventional antipsychotic agents or clozapine in conjunction with an additional atypical antipsychotic in clozapine-refractory patients. Further, controlled trials are necessary to identify patients and circumstances in which combination therapy should be utilized and the risks and benefits of concurrent therapy.
Neuroleptics should be used concomitantly during transitional periods lasting up to four weeks when switching patients to a different antipsychotic agent 1-44.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug interactions considered clinically relevant for atypical antipsychotics are summarized in Table 5 1-25. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
Aripiprazole | Citalopram | Increased risk of QT prolongation and serotonin syndrome because aripiprazole is a partial agonist of 5-HT1A and citalopram is a selective serotonin reuptake inhibitor | Avoid use | major (CP) |
Atypical antipsychotics (AAs) | Antihypertensive agents | Potential for enhanced antihypertensive effects due to AA-associated alpha1-adrenergic receptor antagonism | Use cautiously together; monitor for amplified hypotensive effects | moderate (CP) |
AAs | CNS depressants | Potential for additive CNS effects | Use cautiously together; observe patients for enhanced CNS adverse effects | moderate (CP) |
AAs (except pimavanserin) | Drugs affecting seizure threshold (e.g., tramadol) | Increased seizure risk as AAs have been associated with seizures (incidence varies) | Avoid drug combination if possible; if combination necessary, closely monitor patients for seizure activity and discontinue therapy as indicated | major (CP) |
AAs | Metoclopramide | Adjunctive therapy enhances potential for increased extrapyramidal symptoms (EPS) and neuroleptic malignant syndrome (NMS) as both agents block dopamine receptors | Combination contraindicated by metoclopramide manufacturer; if combination necessary, monitor for signs/ symptoms of EPS or NMS-discontinue metoclopramide if symptoms develop | severe (CP) |
Clozapine | Myelopsuppressive (antineoplastic) drugs | Potential for additive bone marrow suppressive effects | Concurrent administration contraindicated | severe (CP) |
Clozapine | Carbamazepine | Increased risk of additive bone marrow-suppressing effects, including agranulocytosis | Avoid concurrent use; choose alternative anticonvulsant | major (CP) |
Samidorphan | Opioids | Concurrent use may decrease opioid efficacy and precipitate opioid withdrawal | Concurrent administration is contraindicated | severe (CP) |
Select AAs (clozapine, olanzapine) | CYP1A2 inducers (e.g., carbamazepine**, phenobarbital, phenytoin, ritonavir*, rifampin) | Potential for reduced clozapine, olanzapine serum concentrations and worsening of psychosis | Monitor clozapine, olanzapine efficacy in patients; adjust doses as necessary when CYP1A2 inducer added, deleted, or changed to therapeutic regimen | major (CP) |
Select AAs (asenapine, clozapine, olanzapine) | CYP1A2 inhibitors (e.g., ciprofloxacin, fluvoxamine) | Potential for decreased AA clearance, increased AA serum concentrations and enhanced pharmacologic/ adverse effects (seizures, hypotension) as clozapine, olanzapine metabolized by CYP1A2 | If drug combination necessary, used reduced clozapine dosages and closely monitor for adverse events | major (CP) |
Select AAs (aripiprazole, brexpiprazole, cariprazine, clozapine, iloperidone, pimavanserin, quetiapine, ziprasidone) | CYP3A4 inhibitors (e.g., ketoconazole, ritonavir*) | Potential for decreased AA clearance, increased AA serum concentrations, and enhanced pharmacologic/ adverse effects as select AAs metabolized by CYP3A4 | Monitor for enhanced AA pharmacologic/ adverse effects and adjust doses as necessary (50% dose reduction recommended for aripiprazole, brexpiprazole, iloperidone) | major, moderate (CP) |
Select AAs (aripiprazole, brexpiprazole, clozapine, olanzapine, pimavanserin, quetiapine, risperidone, ziprasidone) | CYP3A4 inducers (e.g., carbamazepine**, phenytoin) | Potential for significant reductions in AA plasma concentrations (by as much as 50%) due to enhanced AA hepatic microsomal metabolism | Monitor AA efficacy in patients; adjust doses as necessary when CYP3A4 inducer added, deleted, or changed to therapeutic regimen (brexpiprazole dose should be doubled over 1-2 weeks when prescribed with CYP3A4 inducer) | major, moderate (CP) |
Select AAs (aripiprazole, brexpiprazole, iloperidone, risperidone) | CYP2D6 inhibitors (e.g., quinidine, select SSRIs, ritonavir) | Potential for decreased AA clearance and increased AA serum concentrations and enhanced pharmacologic/ adverse effects as select AAs metabolized by CYP2D6 | Monitor for enhanced AA pharmacologic/ adverse effects and adjust doses as necessary (recommended to reduce aripiprazole, brexpiprazole, iloperidone doses by 50% when administered in conjunction with CYP2D6 inhibitor) | major, moderate (CP) |
Select AAs (aripiprazole, asenapine, clozapine, iloperidone, olanzapine, paliperidone, pimavanserin, quetiapine, risperidone, ziprasidone) | QTc interval-prolonging medications | Potential for increased cardiotoxicity (e.g., torsades de pointes, cardiac arrest) due to additive QT interval prolongation | Avoid concurrent use; if combination necessary, closely monitor cardiac function; discontinue therapy in patients with QTc measurements greater than 500 msec | severe, major (CP) |
Legend:
- # CP = Clinical Pharmacology
- * Ritonavir inhibits clozapine metabolism through CYP3A4 inhibition, but induces olanzapine metabolism through CYP1A2 enzyme induction.
- ** Carbamazepine induces olanzapine metabolism through CYP1A2 enzyme induction and induces clozapine metabolism through CYP3A4 induction.
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed September 8, 2023.
- Clozapine tablets (Clozaril®) package insert. HLS Therapeutics (USA), Inc., May 2023.
- Clozapine oral suspension (Versacloz®) package insert. TruPharma, LLC, March 2023.
- Asenapine sublingual tablets (Saphris®) package insert. Allergan USA, Inc., October 2021.
- Ziprasidone capsules (Geodon®) package insert. Roerig, February 2022.
- Risperidone tablets, orally disintegrating tablets, oral solution (Risperdal®) package insert. Janssen Pharmaceuticals, Inc., August 2022.
- Iloperidone tablets (Fanapt®) package insert. Vanda Pharmaceuticals Inc., September 2021.
- Paliperidone extended-release tablets (Invega®) package insert. Janssen Pharmaceuticals, Inc., March 2022.
- Aripiprazole tablet, orally disintegrating tablet, oral solution (Abilify®) package insert. Otsuka America Pharmaceutical, Inc., November 2022.
- Olanzapine tablet, orally disintegrating tablet (Zyprexa®, Zyprexa® Zydis®) package insert. Eli Lilly and Company, February 2021.
- Quetiapine tablets (Seroquel®) package insert. AstraZeneca Pharmaceuticals, January 2022.
- Quetiapine extended-release tablets (Seroquel XR®) package insert. AstraZeneca Pharmaceuticals, January 2022.
- Lurasidone tablets (Latuda®) package insert. Sumitomo Pharma America, Inc., May 2022.
- Brexpiprazole (Rexulti®) package insert. Otsuka America Pharmaceutical, Inc., May 2023.
- Cariprazine capsules (Vraylar®) package insert. Remedyrepack, Inc., July 2021.
- Aripiprazole tablets with sensor (Abilify MyCite®) package insert. Otsuka America Pharmaceutical, Inc., February 2023.
- Pimavanserin tablets (Nuplazid®) package insert. Acadia Pharmaceuticals, Inc., November 2020.
- Olanzapine and fluoxetine hydrochloride capsule (Symbyax®) package insert. Eli Lilly and Company, August 2023.
- Asenapine extended-release transdermal film (Secuado®). Noven Therapeutics, LLC., November 2022.
- Lumateperone (Caplyta®) oral capsules package insert. Intra-Cellular Therapies, Inc., June 2023.
- Olanzapine and samidorphan (Lybalvi®) oral tablets package insert. Alkermes Inc., May 2021.
- The Parameters Workgroup of the Psychiatric Executive Formulary Committee, Health and Specialty Care Division, Texas Health and Human Services Commission. Psychotropic medication utilization parameters for children and youth in Texas public behavioral health (6th version). (June 2019) Available at: https://hhs.texas.gov/sites/default/files/documents/doing-business-with-hhs/provider-portal/facilities-regulation/psychiatric/psychotropic-medication-utilization-parameters.pdf. Accessed September 8, 2023.
Benzodiazepines (Oral, Nasal, Rectal)
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
Refer to the Sedative/Hypnotics criteria for sedative and hypnotic benzodiazepines.
- Revision history
- April 22, 2022; March 2020; March 2018; May 2017; Dec. 2014; March 2013; June 2011; Jan. 2009; April 2003; Dec. 2001; Dec. 2000; Dec. 1999; Nov. 1998; Nov. 1997; Dec. 1996.
- Initially developed
- Oct. 1993
1. Dosage
1.1. Adults
Non-sedative/hypnotic benzodiazepines and benzodiazepines with mixed indications are FDA-approved for use in the outpatient setting to manage anxiety (alprazolam, chlordiazepoxide, clorazepate, oral diazepam, lorazepam, oxazepam), panic disorder (alprazolam, clonazepam), acute musculoskeletal (MS) conditions including spasticity (oral diazepam), seizures [clobazam (Lennox-Gastaut syndrome), clonazepam, clorazepate, nasal, oral and rectal diazepam], and acute alcohol withdrawal (chlordiazepoxide, clorazepate, oral diazepam, oxazepam) 1-11. An oral film formulation of clobazam (Sympazan®) is FDA approved for adjunctive seizure management in Lennox-Gastaut syndrome 1,2,12. A diazepam nasal formulation (Valtoco®) is FDA-approved to treat intermittent frequent seizure episodes that differ from a patient’s usual seizure pattern 1,2,13. Nayzilam® is a nasal spray formulation of midazolam that is indicated for the acute treatment of intermittent, stereotypic episodes of frequent seizure activity that are distinct from a patient’s usual seizure pattern in patients with epilepsy 1,2,14. In November 2021, the FDA approved a once daily extended release formulation of lorazepam (Loreev XR®) that is approved for the treatment of anxiety disorders in adults who are already receiving three times daily dosing of lorazepam 1,2,15.
The chlordiazepoxide-amitriptyline combination is indicated for depression with associated anxiety symptoms, while chlordiazepoxide/clidinium is FDA-approved to control emotional and somatic factors in gastrointestinal disorders as well as adjunctive use in peptic ulcer disease, irritable bowel syndrome, and acute enterocolitis 1,2,16. Tables 1 1-15 and 2 1,2,16,17summarize the adult maximum recommended dosages for non-sedative/hypnotic benzodiazepines as monotherapy and combination therapy.
Table 1. Adult Benzodiazepine Maximum Recommended Daily Dosages: Monotherapy
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage* |
---|---|---|---|
alprazolam (Xanax®, generics) | 0.25 mg, 0.5 mg, 1 mg, 2 mg tablets, disintegrating tablets; 1 mg/ml oral solution | anxiety | Less than or equal to and greater than 65 years: 4 mg daily, in divided doses |
alprazolam (Xanax®, Xanax XR®, generics) | 0.25 mg, 0.5 mg, 1 mg, 2 mg tablets, disintegrating tablets; 0.5 mg, 1 mg, 2 mg, 3 mg extended-release tablets; 1 mg/ml oral solution | panic | Less than or equal to and greater than 65 years: 10 mg daily, in divided doses for immediate release formulations |
chlordiazepoxide (generics) | 5 mg, 10 mg, 25 mg capsule | alcohol withdrawal (AW) | Less than or equal to and greater than 65 years: 300 mg daily, in divided doses |
anxiety |
Less than 65 years: mild, moderate: 40 mg daily, in divided doses severe: 100 mg daily, in divided doses Greater than 65 years: 20 mg daily, in divided doses |
||
clobazam (Onfi®, Sympazan®, generics) | 10 mg, 20 mg tablets; 2.5 mg/mL suspension; 5 mg, 10 mg, 20 mg oral soluble film | seizures associated with Lennox-Gastaut syndrome |
Less than 65 years: Greater than 65 years: |
clonazepam (Klonopin®, generics) | 0.5 mg, 1 mg, 2 mg tablets; 0.125 mg, 0.25 mg, 0.5 mg, 1 mg, 2 mg disintegrating tablets | panic | Less than or equal to and greater than 65 years: 4 mg daily |
seizures | Less than or equal to and greater than 65 years: 20 mg daily | ||
clorazepate (Tranxene®, Tranxene T-Tab®, generics) | 3.75 mg, 7.5 mg, 15 mg tablets | AW | Less than or equal to and greater than 65 years: 90 mg daily |
anxiety | Less than or equal to and greater than 65 years: 60 mg daily | ||
seizures | Less than or equal to and greater than 65 years: 90 mg daily | ||
diazepam (nasal) (Valtoco®) | 5 mg as one 5 mg device, 10 mg as one 10 mg device, 15 mg as 2 x 7.5 mg devices, 20 mg as 2 x 10 mg devices nasal liquid | seizures | 28-50 kg: 10 mg as one spray in one nostril (equates to 0.2 mg/kg dose)^ 51-75 kg: 15 mg as 2 x 7.5 mg devices with one spray in each nostril (equates to 0.2 mg/kg dose)^ Greater than or equal to 76 kg^: 20 mg as 2 x 10 mg devices with one spray in each nostril (equates to 0.2 mg/kg dose)^ |
diazepam (oral) (Valium®, Diazepam Intensol®, generics) | 2 mg, 5 mg, 10 mg oral tablets; 5 mg/mL, 5 mg/5 mL oral solution | AW | Less than or equal to and greater than 65 years: 40 mg daily |
anxiety | Less than or equal to and greater than 65 years: 40 mg daily | ||
musculoskeletal conditions | Less than or equal to and greater than 65 years: 40 mg daily | ||
seizures | Less than or equal to and greater than 65 years: 40 mg daily | ||
diazepam (rectal) (Diastat®, Diastat AcuDial®, generics) | 2.5 mg, 10 mg, 20 mg rectal gel | seizures |
Less than or equal to and greater than 65 years: 0.2 mg/kg; may be repeated once 4-12 hours after initial dose+ |
lorazepam (Ativan®, Loreev XR®, generics) | 0.5 mg, 1 mg, 2 mg tablets; 1 mg, 1.5 mg, 2 mg, 3 mg extended-release capsules; 2 mg/mL solution |
anxiety | Less than or equal to and greater than 65 years: 10 mg daily, in divided doses |
lorazepam (Ativan®, generics) | insomnia due to anxiety or transient situational stress | Less than or equal to and greater than 65 years: 4 mg at bedtime | |
Midazolam (nasal) (Nayzilam®) | 5 mg nasal spray | seizures | Less than or equal to and greater than 65 years: 5 mg as one spray in one nostril! |
oxazepam (generics) | 10 mg, 15 mg, 30 mg capsule | AW | Less than or equal to 65 years: 120 mg daily in divided doses Greater than 65 years: 60 mg daily in divided doses# |
oxazepam | anxiety | Less than or equal to 65 years: mild, moderate: 60 mg daily in divided doses severe: 120 mg daily in divided doses Greater than 65 years: 60 mg daily in divided doses |
Legend:
- * Benzodiazepine doses should be reduced to lowest effective dose, if possible, in the elderly (patients greater than 65 years of age), to minimize oversedation; these patients are more sensitive to pharmacologic effects of these agents
- ^May give second diazepam nasal dose at least 4 hours after first dose, if necessary; may not use more than 2 doses to treat single episode; may not treat more than 1 episode/5 days or more than 5 episodes/month
- + Dose rounded up to nearest commercially available unit dose (in multiples of 2.5 mg); should not be administered by caregivers outside the hospital more frequently than one course every 5 days with a maximum of 5 courses per month; not for chronic administration to minimize potential for development of tolerance
- ! May give second midazolam nasal dose 10 minutes after first dose, if necessary; may not use more than 2 doses to treat a single episode. Nasal midazolam should be used to treat no more than one episode every three days and no more than 5 episodes per month
- # In elderly patients, doses up to 120 mg/day may be needed to treat AW
Table 2. Adult Benzodiazepine Maximum Recommended Dosages: Combination Therapy
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
chlordiazepoxide/ amitriptyline (Limbitrol®, generics) | 5 mg/12.5 mg tablets 10 mg/25 mg double-strength tablets | depression with concurrent anxiety symptoms | 60 mg chlordiazepoxide/ 150 mg amitriptyline daily in divided doses |
chlordiazepoxide/ clidinium (Librax®, generics) | 5 mg/ 2.5 mg capsule | emotional/ somatic factors in gastro-intestinal disorders; adjunctive therapy in peptic ulcer disease, irritable bowel syndrome, and acute enterocolitis | 40 mg/20 mg per day (2 capsules 4 times daily) |
1.2. Pediatrics
Safety and effectiveness of alprazolam and combination therapies, chlordiazepoxide/amitriptyline and chlordiazepoxide/clidinium, in children less than 18 years of age have not been established.1-3,16,17 Additionally, safety and effectiveness of Loreev XR® (lorazepam) has not been established in pediatric patients, and the safety and effectiveness of Nayzilam® (midazolam) has not been established in pediatric patients less than 12 years of age .1,2,14,15.
The oral tablet and oral film formulations of clobazam are approved for use in children 2 years of age and older to manage seizures associated with Lennox-Gastaut syndrome.1,2,11,12 The diazepam nasal formulation (Valtoco®) is FDA-approved for use in patients 6 years and older to treat intermittent frequent seizure episodes that differ from a patient’s usual seizure pattern .1,2,13.
Except for alprazolam, non-sedative/hypnotic benzodiazepines are indicated for use in pediatric patients to manage anxiety or seizures.1-15 Pediatric dosages and age limitations for benzodiazepines are summarized in Table 3 1,2,4-14.
Table 3. Pediatric Benzodiazepine Maximum Recommended Dosages
Drug Name | Treatment Indication | Maximum Recommended Dosage |
---|---|---|
chlordiazepoxide | anxiety | Greater than or equal to 6 years: 30 mg daily in divided doses |
clobazam | seizures associated with Lennox-Gastaut syndrome |
|
clonazepam | seizures |
|
clorazepate | seizures |
|
diazepam (nasal) | seizures |
|
diazepam (oral) | musculoskeletal conditions | Greater than or equal to 6 months of age: 10 mg/day in divided doses have been used; dose may be increased as needed and tolerated – no maximum dose documented |
diazepam (oral) | seizures | Greater than or equal to 6 months of age: 10 mg/day in divided doses have been used; dose may be increased as needed and tolerated – no maximum dose documented |
diazepam (rectal) | seizures+ |
|
lorazepam | anxiety | Greater than or equal to 12 years: 10 mg daily in divided doses (maximum, 2 mg/dose) |
insomnia due to anxiety or situational stress | Greater than or equal to 12 years: 4 mg at bedtime | |
midazolam (nasal) | seizures | Greater than or equal to 12 years: 5 mg as one spray in one nostril! |
oxazepam | anxiety |
|
Legend:
- ^ May give second diazepam nasal or rectal dose at least 4 hours after first dose, if necessary; may not use more than 2 doses to treat single episode; may not treat more than 1 episode/5 days or more than 5 episodes/month
- + Dose rounded up to nearest commercially available unit dose (in multiples of 2.5 mg); should not be administered by caregivers outside the hospital more frequently than one course every 5 days with a maximum of 5 courses per month; not for chronic administration to minimize potential for development of tolerance
- ! May give second midazolam nasal dose 10 minutes after first dose, if necessary; may not use more than 2 doses to treat a single episode. Nasal midazolam should be used to treat no more than one episode every three days and no more than 5 episodes per month
2. Duration of Therapy
Anxiety disorders are considered chronic disorders with low spontaneous remission rates and high rates of relapse. Pharmacotherapy for generalized anxiety disorder (GAD) in adults includes antidepressants, benzodiazepines, buspirone, hydroxyzine and pregabalin. Treatment duration for GAD ranges from 3 to 12 months to accomplish treatment goals of symptom remission and improvement in quality of life. Although antidepressants are now considered drugs of choice for managing GAD, benzodiazepines are used frequently for short-term management of anxiety, as an adjunct to initiating antidepressant therapy, or improvement in sleep disturbances associated with GAD and/or antidepressant therapy. Benzodiazepines provide symptom improvement more rapidly than antidepressants and are more effective in managing somatic complaints rather than psychic symptoms. Although longer-term use is considered relatively safe and effective for benzodiazepines, the potential for abuse, dependence and withdrawal does exist 18-19.
In pediatric patients, selective serotonin reuptake inhibitors (SSRIs) are agents of choice to manage childhood anxiety disorders, with serotonin norepinephrine reuptake inhibitors (SNRIs) being recommended as another treatment option. The most recent guidelines published by the American Academy of Child & Adolescent Psychiatry state that there is insufficient evidence to draw conclusions about the benefits or harms of benzodiazepine therapy in pediatric patients with anxiety disorders20.
Panic disorder (PD) is a chronic, recurring condition requiring drug therapy suitable for prolonged use. The acute treatment phase for PD lasts approximately 12 weeks, and most patients require an additional 12 to 18 months of therapy to optimize treatment response and prevent relapse. SSRIs are the agents of choice to manage PD, although benzodiazepines are frequently prescribed as well, usually in combination with antidepressant therapy18. While benzodiazepines are effective in the short-term treatment of panic disorder due to rapid onset of action, long-term treatment may be less desirable due to the potential for dependence. Unlike anxiety disorder patients, patients with panic disorder are less successful at discontinuing benzodiazepine therapy. Additionally, there is a high prevalence of comorbid depression and/or bipolar disorder in patients with panic disorder. Benzodiazepines are less effective than other available agents when panic disorder coexists with other mood disorders. Therefore, patients with panic disorder and other psychiatric comorbidities may benefit from short-term therapy with a benzodiazepine, with chronic management incorporating mood stabilizing or antidepressant agents that are also effective in panic disorder19. Alprazolam has been studied more than other available benzodiazepines for the treatment of panic disorder, although clonazepam, lorazepam, and diazepam have also been evaluated. Most studies evaluating benzodiazepine use in panic disorder have been short-term studies (less than 8 weeks in duration). A few long-term panic disorder studies evaluating alprazolam have demonstrated sustained reductions in panic attack frequency when alprazolam has been administered for 6 to 8 months21. Benzodiazepines should be tapered when discontinued, as patients may experience a withdrawal syndrome if therapy is discontinued abruptly. Benzodiazepine elimination half-life and seizure history for the patient also influence the taper duration. Patients receiving benzodiazepines in lower doses for shorter times periods (less than six months) may be effectively tapered over two to eight weeks, while patients receiving benzodiazepines with a short elimination half-life, in higher doses, and/or for a longer duration (six months or longer) may require a slow taper over two to four months18,19,21.
Benzodiazepines should be prescribed on a short-term basis to manage anxiety disorders. Benzodiazepine doses should be tapered rather than discontinued abruptly to avoid withdrawal symptoms. Patients receiving benzodiazepines for up to 6 months should be tapered over 2 to 8 weeks, while patients treated with benzodiazepines for up to 12 months should be tapered over 2 to 4 months18,19,21<.
While concerns for benzodiazepine tolerance and withdrawal exist, patients may benefit from long-term use of benzodiazepines in panic disorder to minimize symptom recurrence. Additionally, significant problems with benzodiazepine dose escalation have not surfaced with chronic use for panic disorder18,19,21.
The use of benzodiazepines as an anti-epileptic is not limited in duration.
3. Duplicative Therapy
The combined use of two or more benzodiazepines is not supported in the literature and therefore is not recommended. The concurrent use of two or more benzodiazepines will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for nonsedative/hypnotic benzodiazepines are summarized in Table 4 1-17. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Table 4. Benzodiazepine (nonsedative/hypnotic) Drug-Drug Interactions
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level* |
---|---|---|---|---|
alprazolam | CYP3A4 inhibitors (e.g., azole anti-fungals, macro-lides, NNRT inhibitors, protease inhibitors) | adjunctive administration may result in enhanced oxidized BZD pharmacologic effects and/or toxicity, including significant sedation and/or respiratory depression, as alprazolam is metabolized by CYP3A4 | avoid combined therapy with most CYP3A4 inhibitors, if possible | contraindicated -azole antifungals, NNRT inhibitors, protease inhibitors; moderate -macrolides (DrugReax) 1 – severe (azole antifungals, NNRT inhibitors, protease inhibitors); 3-moderate (macrolides) (CP) |
alprazolam | phenytoin | combined use may induce alprazolam metabolism and decrease alprazolam pharmacologic effects | monitor for reduced alprazolam clinical effects and adjust doses as necessary | 3-moderate (CP) |
benzodiazepines (BZDs) | central nervous system (CNS) depressants | concurrent administration may potentiate respiratory depression, especially with overdosage | monitor for respiratory depression; adjust doses as necessary | major (DrugReax) 2-major (CP) |
BZDs | sodium oxybate (Xyrem®) | combined use may lead to increased respiratory depression due to additive CNS/ respiratory depressive effects | adjunctive use should be avoided; if concurrent use necessary, closely monitor for respiratory depression; dosage reductions for one or both medications may be needed | major (DrugReax) 1-severe (CP) |
clobazam | drugs metabolized by CYP2C19 (e.g., clopidogrel, cimetidine, fluconazole) | co-administration may result in increased clobazam serum levels and increased pharmacologic and/or adverse effects as clobazam is partially metabolized by CYP2C19 | monitor for enhanced clobazam pharmacologic/adverse effects; adjust clobazam dose as necessary | moderate (DrugReax) 3-moderate (CP) |
other oxidized BZDs (chlor-diazepoxide, clonazepam, diazepam) | CYP3A4 inhibitors [e.g., azole antifungals, macrolides, non-nucleoside reverse transcriptase (NNRT) inhibitors, protease inhibitors] | adjunctive administration may result in enhanced oxidized BZD pharmacologic effects and/or toxicity, including significant sedation and/or respiratory depression, as oxidized BZDs are metabolized by CYP3A4 | avoid combined therapy, if possible; if concurrent with BZD necessary, monitor for increased sedation, respiratory depression, or consider a BZD metabolized by glucuronidation (e.g., oxazepam) | moderate (DrugReax) 2-major (protease inhibitors); 3- moderate (azoles, macrolides, NNRT inhibitors) (CP) |
oxidized BZDs (e.g., alprazolam, chlordiazepoxide, clonazepam, diazepam) | CYP3A4 inducers (e.g., carbamazepine, rifamycins) | combined use may result in increased oxidized BZD clearance, reduced oxidized BZD serum levels, and decreased pharmacologic effects; oxidized BZDs are metabolized by CYP3A4 | monitor oxidized BZD clinical response and adjust dose as needed; may also consider substituting a BZD metabolized by glucuronidation (e.g., oxazepam) | moderate (DrugReax) 2-major, 3-moderate (CP) |
select BZDs (chlordiazepoxide, diazepam) | phenytoin | concomitant use may result in unpredictable effects on serum phenytoin levels (may increase, decrease, or not change) due to unknown effect on phenytoin metabolism; phenytoin may induce BZD metabolism, reduce BZD serum levels, and decrease BZD pharmacologic effects | closely monitor serum phenytoin levels and observed for altered pharmacologic effects (reduced efficacy, increased toxicity); monitor for reduced BZD clinical effects and adjust doses as necessary | major (diazepam), moderate (chlordiazepoxide) (DrugReax) 3-moderate (CP) |
chlordiazepoxide/amitriptyline | amphetamines | combined administration may increase potential for serotonin syndrome as both medications target the serotonin neurotransmitter system | if adjunctive therapy is necessary, start with lower doses and monitor for signs/ symptoms of serotonin syndrome; discontinue both medications if serotonin syndrome develops | major (DrugReax) 2-major (CP) |
chlordiazepoxide/amitriptyline | monoamine oxidase inhibitors | increased risk of serotonin syndrome with amitriptyline (e.g., mental status changes, hyperpyrexia, restless, shivering, hypertonia, tremor) due to serotonin metabolism inhibition by monoamine oxidase | allow 14 days after MAOI discontinuation before initiating other tricyclic antidepressant therapy | contraindicated (DrugReax) 1-severe (CP) |
chlordiazepoxide/amitriptyline | QT interval-prolonging drugs | co-administration with QT interval-prolonging drugs may increase risk of QT interval prolongation and torsades de pointes as amitriptyline also prolongs the QT interval | avoid concurrent use; if adjunctive use necessary, monitor for increased pharmacologic/toxic effects; adjust dose as necessary or discontinue therapy | contraindicated (DrugReax) 1-severe, 2-major (CP) |
midazolam | CYP3A4 inhibitors | May result in prolonged sedation because of a decreased clearance of midazolam | Avoid co-administration of midazolam with moderate or strong CYP3A4 inhibitors. Use with caution with co-administered with mild CYP3A4 inhibitors | Contraindicated (strong CYP3A4 inhibitors), Major (moderate CYP3A4 inhibitors) (Micromedex) |
Opioids | Concomitant use increases the risk of respiratory depression | Reserve concomitant prescribing for use in patients for whom alternative treatment options are inadequate. Minimize dosages and durations to the minimum required | Major (Micromedex) | |
central nervous system depressants | Concomitant use may increase the risk of hypoventilation, airway obstruction, desaturation, or apnea and may contribute to profound and/or prolonged drug effect | Reserve concomitant use for patients for whom alternative treatment options are inadequate. Limit dosages and durations to the minimum required | Major (Micromedex) |
Legend:
- *CP = Clinical Pharmacology
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: March 27, 2022).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed March 27, 2022.
- Alprazolam (Xanax®) oral tablet package insert. Pharmacia & Upjohn Company, LLC. September 2021.
- Chlordiazepoxide oral capsule package insert. Epic Pharma, LLC. March 2022.
- Clorazepate oral tablet package insert. Mylan Pharmaceuticals, Inc. June 2020.
- Diazepam (Valium®) oral tablet package insert. Roche Laboratories, Inc. November 2019.
- Diazepam (Diastat®, Diastat® AcuDial™) rectal delivery system package insert. Bausch Health US, LLC. March 2021.
- Lorazepam (Ativan®) oral tablet package insert. Bausch Health US, LLC. February 2021.
- Oxazepam oral capsule package insert. Actavis Pharma, Inc. September 2021.
- Clonazepam (Klonopin®) package insert. Genentech, Inc. December 2019.
- Clobazam (Onfi®) Package Insert. Lundbeck Inc., February 2021.
- Clobazam oral film (Sympazan®) package insert. Aquestive Therapeutics, Inc., March 2021.
- Diazepam nasal spray (Valtoco®) package insert. Neurelis, Inc., February 2022.
- Midazolam (Nayzilam®) nasal spray package insert. UCB, Inc. February 2021.
- Lorazepam (Loreev XR®) extended-release capsule package insert. Almatica Pharma, LLC. February 2022.
- Chlordiazepoxide/amitriptyline package insert. Mylan Pharmaceuticals, Inc., December 2021.
- Chlordiazepoxide/clidinium (Librax®) package insert. Bausch Health US LLC, February 2021.
- Melton ST, Kirkwood CK. Chapter 87. Anxiety disorders I: generalized anxiety, panic, and social anxiety disorders (Chapter). In: DiPiro JT, Yee GC, Posey LM, et al. Pharmacotherapy: a pathophysiologic approach. 11th ed. New York, McGraw-Hill, 2019. Access Pharmacy Web site. Available at: http://accesspharmacy.mhmedical.com.ezproxy.lib.utexas.edu/content.aspx?bookid=1861§ionid=146065193. Accessed March 28, 2022.
- Locke AB, Kirst N, Shultz CG. Diagnosis and management of generalized anxiety disorder and panic disorder in adults. AFP. 2015;91(9):617-624.
- Walter HJ, Bukstein OG, Abright AR, et al. Clinical practice guideline for the assessment and treatment of children and adolescents with anxiety disorders. Journal of the American Academy of Child & Adolescent Psychiatry. 2020;59(10):1107-1124.
- Work Group on Panic Disorder. American Psychiatric Association Practice Guidelines. Practice guideline for the treatment of patients with panic disorder, second edition. Available at: http://psychiatryonline.org/pb/assets/raw/sitewide/practice_guidelines/guidelines/panicdisorder.pdf. Accessed March 28, 2022.
Complement Inhibitor and Enzyme/Protein Replacement Therapy
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 2022; March 2020; March 2018; March 2017; April 2015; March 2015; Feb. 2013.
- Initially developed
- Dec. 2012
1. Dosage
- Adenosine deaminase (ADA) deficiency in severe combined immunodeficiency (SCID)
- Atypical hemolytic uremic syndrome (aHUS)
- Congenital sucrase isomaltase deficiency (CSID)
- Fabry disease
- Gaucher disease
- Hereditary angioedema (HAE)
- Hypophosphatasia
- Wolman disease (lysosomal acid lipase (LAL) deficiency)
- Mucopolysaccharidoses (MPS)
- Hurler and Hurler-Scheie forms of MPS I;
- Hunter syndrome (MPS II);
- Morquio A syndrome (MPS IVA);
- Maroteaux-Lamy syndrome (MPS VI);
- Sly syndrome (MPS VII)
- Myasthenia gravis
- Neuromyelitis optica spectrum disorder
- Paroxysmal nocturnal hemoglobinuria
- Pompe disease
- Severe congenital protein C deficiency
1.1. Adults
Recommended doses for complement inhibitor as well as enzyme/protein replacement therapy FDA-approved for use in adults are summarized in Tables 1-3. Patient profiles containing doses exceeding maximum recommendations will be reviewed.
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
Berotralstat (Orladeyo®) | Hereditary angioedema (HAE) prophylaxis | 110 mg, 150 mg oral capsule | 150 mg by mouth daily* |
C1 esterase inhibitor, human (Berinert®) | HAE treatment | 500 international unit (IU) single-use vial for reconstitution | 20 IU/kg by IV injection as a single dose |
C1 esterase inhibitor, human (Cinryze®) | HAE attacks, routine prevention | 500 unit single-use vial for reconstitution | 1000 U by IV infusion every 3-4 days+ |
C1 esterase inhibitor, human (Haegarda®) | HAE attacks, routine prevention | 2000, 3000 IU single-use vials for reconstitution | 60 IU/kg subcutaneously twice weekly (every 3 to 4 days) |
C1 esterase inhibitor, recombinant (Ruconest®) | HAE treatment | 2100 IU/14 mL single-use vial for reconstitution |
|
Ecallantide (Kalbitor®) | HAE treatment | 10 mg/ml single-use vials x 3 | 30 mg subcutaneously as three separate 10 mg injections; may repeat x1 in 24-hour period if attack symptoms persist |
eculizumab (Soliris®) | Atypical hemolytic uremic syndrome (aHUS) | 300 mg/30 mL single-dose vial | Initial 900 mg IV infusion once weekly for four weeks followed by a 1200 mg IV infusion one week later, maintenance 1200 mg IV infusion over 1-4 hours every two weeks thereafter |
Myasthenia gravis, generalized | Initial 900 mg IV infusion once weekly for four weeks followed by a 1200 mg IV infusion one week later, maintenance 1200 mg IV infusion over 1-4 hours every two weeks | ||
Neuromyelitis optica spectrum disorder | Initial 900 mg IV infusion once weekly for four weeks followed by a 1200 mg IV infusion one week later, maintenance 1200 mg IV infusion over 1-4 hours every two weeks | ||
Paroxysmal nocturnal hemoglobinuria (PNH) | Initial 600 mg IV infusion once weekly for four weeks followed by a 900 mg IV infusion one week later, maintenance 900 mg IV infusion over 1-4 hours every two weeks thereafter | ||
icatibant acetate (Firazyr®, Sajazir®) | HAE treatment | 30 mg/3 mL prefilled syringe, 30 mg/ 3 mL solution for injection | 30 mg subcutaneously as single dose; may repeat x2 with 6 hours between doses in 24-hour period if attack symptoms persist (maximum 3 doses per 24-hour period) |
lanadelumab-flyo (Takhzyro®) | HAE, routine prevention | 300 mg/2 mL vial | 300 mg subcutaneously every 2 weeks; every 4-week dosing possible in patients well-controlled for Greater than 6 months |
pegcetacoplan (Empaveli®) | PNH | 1080 mg/ 20 mL solution for injection | 1080 mg subcutaneously twice weekly |
ravulizumab (Ultomiris®) | aHUS^ PNH |
300 mg/3 mL, 100 mg/11 mL intravenous solution in single-dose vial |
|
Legend
- * Berotralstat is dosed at 110 mg by mouth daily in patients with moderate to severe hepatic impairment, chronic use of P-glycoprotein (P-gp) or BCRP (breast cancer resistance protein) inhibitors, or patients with persistent gastrointestinal (GI) reactions
- + in patients not responding adequately, doses up to 2500 units (not exceeding 100 u/kg) every 3 or 4 days may be utilized based on individual patient response
- ^ treat atypical hemolytic-uremic syndrome with ravulizumab for at least six months
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
agalsidase beta (Fabrazyme®) | Fabry disease | 5 mg, 35 mg single-use vials | 1 mg/kg by intravenous (IV) infusion every 2 weeks |
alglucosidase alfa (Lumizyme®) | Pompe disease (lysosomal acid alpha-glucosidase (GAA) deficiency) | 50 mg single-use vial | 20 mg/kg as IV infusion every 2 weeks |
Avalglucosidase alfa (Nexviazyme®) | Late onset Pompe disease (lysosomal acid alpha-glucosidase (GAA) deficiency) | 100 mg single use vial |
|
elapegademase (Revcovi®) | Adenosine deaminase severe combined immunodeficiency | 2.4 mg/1.5 mL intramuscular solution |
|
elosulfase alfa (Vimizim®) | Mucopoly-saccharidosis (MPS) IVA (Morquio A syndrome) | 5 mg/5 mL single-use vial | 2 mg/kg by IV infusion once weekly |
galsulfase (Naglazyme®) | MPS VI (Maroteaux-Lamy syndrome) | 5 mg/5 mL preservative-free vials | 1 mg/kg by IV infusion once weekly |
idursulfase (Elaprase®) | MPS II (Hunter syndrome) | 6 mg/3 mL single-use vial | 0.5 mg/kg as IV infusion once weekly |
imiglucerase (Cerezyme®) | Gaucher disease, type 1 (non-neuropathic) | 400 mg vials for reconstitution | 60 U/kg by IV infusion over 1-2 hours every 2 weeks |
laronidase (Aldurazyme®) | MPS 1 (Hurler, Hurler-Scheie forms; Scheie form with moderate to severe symptoms) | 2.9 mg/5 mL single-use vials | 0.58 mg/kg by IV infusion once weekly |
migalastat (Galafold®) | Fabry disease with amenable galactosidase alpha gene (GLA) variant | 123 mg oral capsule | 123 mg by mouth every other day |
sacrosidase (Sucraid®) | Congenital sucrase-isomaltase deficiency (CSID) | 8500 international units/mL as 118 mL oral solution bottles, 8500 units/ mL as 2 mL oral solution | Greater than 15 kg: 17,000 units orally mixed in 2-4 ounces of water or milk with each meal or snack |
sebelipase alfa (Kanuma®) | Wolman Disease (Lysosomal acid lipase (LAL) deficiency) | 20 mg/10 mL single-use vial | 3 mg/kg by IV infusion once every other week |
taliglucerase alfa (Elelyso®) | Gaucher disease, type 1 | 200 unit single-use vials for reconstitution |
|
velaglucerase alfa (Vpriv®) | Gaucher disease, type 1 | 400 unit single-use vials for reconstitution |
|
vestronidase alfa-vjbk (Mepsevii®) | MPS VII (Sly syndrome), excluding central nervous system symptoms | 10 mg/5 mL single-use vial | 4 mg/kg as IV infusion every two weeks |
Legend
- * elapegademase equivalent dose to pegademase: pegademase dose (U/kg) divided by 150
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
protein C concentrate (Ceprotin®) | Severe congenital protein C deficiency (acute episode*) | 500 IU, 1000 IU single-use vial for reconstitution | 100-120 IU/kg initial dose by IV infusion, followed by 60-80 IU/kg every 6 hours for 3 doses by IV infusion |
Severe congenital protein C deficiency (short-term prophylaxis/ maintenance dose*) | 45-60 IU/kg every 6 to 12 hours by IV infusion | ||
Severe congenital protein C deficiency (long-term prophylaxis*) | 45-60 IU/kg every 12 hours by IV infusion |
Legend
- * maximum protein C concentrate infusion rate: 2 ml/min
1.2. Pediatrics
Since the last update, several new therapies have been approved by the FDA, and several therapies had their approvals expanded to include a younger age demographic. Berotralstat was approved in 2020 for Hereditary Angioedema prophylaxis in patients 12 years of age and older1-3. Elapegademase is indicated for use in infants, children, adolescents and adults with ADA deficiency due to SCID; pegademase, an older agent used to manage ADA deficiency in pediatric SCID patients is no longer commercially available1,2,18. C1 esterase inhibitor safety and efficacy have not been determined in pediatric patients younger than 5 years of age, and in 2020 the FDA approval for Haegarda® was expanded to include patients six years of age and older1,2,4-7.
In 2021, agalsidase beta was approved for pediatric use in patients two years of age and older for the treatment of Fabry Disease, and avalglucosidase alfa was approved to treat Pompe Disease in patients one year of age and older1,2,15,17.
Alglucosidase alfa is FDA-approved and has been evaluated for early use to treat Pompe disease in all age groups from neonates to adolescents. In a small study, investigators found that alglucosidase therapy initiated early after diagnosis in neonates less than 1 month of age can improve clinical outcomes even before onset of clinical symptoms in infants with Pompe disease33 .
Maximum recommended dosages for complement inhibitor and protein/enzyme replacement therapies FDA-approved for use in pediatric patients are summarized in Tables 4-6. Dosages exceeding these recommendations will be reviewed.
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
berotralstat (Orladeyo®) | Hereditary angioedema (HAE) prophylaxis | 110 mg, 150 mg oral capsule | 12 to 17 years: 150 mg daily |
C1 esterase inhibitor, human (Berinert®) | HAE treatment | 500 unit single-use vial for reconstitution | 5 to 17 years: 20 IU/kg by IV injection as a single dose |
C1 esterase inhibitor, human (Cinryze®) | HAE attacks, routine prevention | 500 unit single-use vial for reconstitution |
|
C1 esterase inhibitor, human (Haegarda®) | HAE attacks, routine prevention | 2000, 3000 IU single-use vials for reconstitution | 6 years and older: 60 IU/kg subcutaneously twice weekly (every 3 to 4 days) |
C1 esterase inhibitor, recombinant (Ruconest®) | HAE treatment | 2100 IU/14 mL single-use vial for reconstitution |
|
ecallantide (Kalbitor®) | HAE treatment | 10 mg/ml single-use vials x 3 |
|
eculizumab (Soliris®) | Atypical hemolytic uremic syndrome (aHUS) | 300 mg/ 30 mL single-dose vial |
|
lanadelumab-flyo (Takhzyro®) | HAE, routine prevention | 300 mg/2 mL vial | 12 years and older: 300 mg subcutaneously every 2 weeks; every 4-week dosing possible in patients well-controlled for greater than 6 months |
ravulizumab (Ultomiris®) | aHUS^ Paroxysmal nocturnal hemoglobinuria (PNH) |
300 mg/3 mL, 1100 mg/11 mL intravenous solution |
|
Legend
- + in patients 6 to 11 years of age not responding adequately, doses up to 1000 units every 3 or 4 days may be utilized based on individual response. In patients 12 years of age and older not responding adequately, doses up to 2500 units (not exceeding 100 u/kg) every 3 or 4 days may be utilized based on individual patient response
- ^ treat atypical hemolytic-uremic syndrome with ravulizumab for at least six months
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
agalsidase beta (Fabrazyme®) | Fabry disease | 5 mg, 35 mg single-use vials | 2-17 years: 1 mg/kg by intravenous (IV) infusion every 2 weeks |
alglucosidase alfa (Lumizyme®) | Pompe disease | 50 mg single-use vial | Birth to any age: 20 mg/kg as IV infusion every 2 weeks |
asfotase alfa (Strensiq®) | hypophosphatasia (perinatal/infantile- or juvenile-onset) | 18 mg/0.45 mL, 28 mg/0.7 mL, 40 mg/1 mL, or 80 mg/0.8 mL single-use vials |
|
avalglucosidase alfa (Nexviazyme®) | Late onset Pompe disease (lysosomal acid alpha-glucosidase (GAA) deficiency) | 100 mg single use vial |
|
cerliponase alfa (Brineura®) | late infantile neuronal ceroid lipofuscinosis type 2 (CLN2) disease | 150 mg/5 ml as 2 single-use vials copackaged with intraventricular electrolytes | 3 years and older: 300 mg every other week by intraventricular infusion, followed by intraventricular electrolytes |
elapegademase (Revcovi®) | Adenosine deaminase severe combined immunodeficiency | 2.4 mg/1.5 mL intramuscular solution |
|
elosulfase (Vimizim®) | Mucopolysaccharidoses (MPS) IVA (Morquio A syndrome) | 5 mg/5 mL single-use vial | 5 years and older: 2 mg/kg by IV infusion over a minimum of 3.5-4.5 hours once weekly |
galsulfase (Naglazyme®) | MPS VI (Maroteaux-Lamy syndrome) | 5 mg/5 mL preservative-free vials | 3 months and older: 1 mg/kg by IV infusion once weekly |
idursulfase (Elaprase®) | MPS II (Hunter syndrome) | 6 mg/3 mL single-use vial | 16 months to 17 years: 0.5 mg/kg as IV infusion once weekly |
imiglucerase (Cerezyme®) | Gaucher disease, type 1 (nonneuropathic) | 400 mg vials for reconstitution | 2 to 16 years: 60 U/kg by IV infusion over 1-2 hours every 2 weeks |
imiglucerase (Cerezyme®) | Gaucher disease, type 1 (nonneuropathic) | 400 mg vials for reconstitution | 2 to 16 years: 60 U/kg by IV infusion over 1-2 hours every 2 weeks |
laronidase (Aldurazyme®) | MPS 1 (Hurler, Hurler-Scheie forms; Scheie form with moderate to severe symptoms) | 2.9 mg/5 mL single-use vials | 6 months of age and older: 0.58 mg/kg by IV infusion over 3-4 hours once weekly |
sacrosidase (Sucraid®) | Congenital sucrase-isomaltase deficiency (CSID) | 8500 international units/mL as 118 mL oral solution bottles, 8500 units/ mL as 2 mL oral solution |
|
sebelipase alfa (Kanuma®) | Wolman Disease (Lysosomal acid lipase (LAL) deficiency) | 20 mg/10 mL single-use vial | Greater than or equal to 1 month of age to 17 years: 3 mg/kg by IV infusion once every other week |
Wolman Disease (Rapidly progressive LAL deficiency developing in first 6 months of life) | 1-12 months of age: 5 mg/kg by IV infusion once weekly | ||
taliglucerase alfa (Elelyso®) | Gaucher disease, type 1 | 200 unit single-use vials for reconstitution treatment-naïve (4 years and older): 60 U/kg by IV infusion once every 2 weeks | previously treated with imiglucerase (4 years and older): use same unit/kg dosage for taliglucerase that was prescribed for imiglucerase and administer every two weeks |
velaglucerase alfa (Vpriv®) | Gaucher disease, type 1 | 400 unit single-use vials for reconstitution treatment-naïve (4 years and older): 60 U/kg by IV infusion once every 2 weeks | previously treated with imiglucerase (4 years and older): use same unit/kg dosage for velaglucerase that was prescribed for imiglucerase and administer every two weeks |
vestronidase alfa-vjbk (Mepsevii®) | MPS VII (Sly syndrome), excluding central nervous system symptoms | 10 mg/5 mL single-use vial | birth to 17 years: 4 mg/kg as IV infusion every two weeks |
Legend
- * elapegademase equivalent dose to pegademase: pegademase dose (U/kg) divided by 150
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
protein C concentrate (Ceprotin®) | Severe congenital protein C deficiency (acute episode) | 500 IU, 1000 IU single-use vial for reconstitution | birth to 17 years: 100-120 IU/kg initial dose by IV infusion, followed by 60-80 IU/kg every 6 hours for 3 doses by IV infusion* |
Severe congenital protein C deficiency (short-term prophylaxis/ maintenance dose) | birth to 17 years: 45-60 IU/kg every 6 to 12 hours by IV infusion* | ||
Severe congenital protein C deficiency (long-term prophylaxis) | birth to 17 years: 45-60 IU/kg every 12 hours by IV infusion* |
Legend
- * maximum protein C concentrate infusion rate: 2 ml/min, except in children less than 10 kg, where infusion rate should not exceed 0.2 ml/kg/min
2. Duration of Therapy
There is no basis for limiting the duration of complement inhibitor and enzyme/protein replacement therapy as enzyme deficiencies represent chronic disorders and require sustained treatment1-32.
3. Duplicative Therapy
FDA-approved enzyme replacement therapies are indicated for specific enzyme deficiencies. Patients with multiple enzyme deficiencies may be prescribed multiple enzyme replacement therapies concurrently. Adjunctive administration of enzyme replacement therapies without multiple enzyme deficiency diagnoses is not clinically reasonable and will be evaluated.
4. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: March 9, 2022).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed March 9, 2022.
- Berotralstat oral capsules (Orladeyo®) package insert. BioCryst Pharmaceuticals, Inc., December 2020.
- C1 esterase inhibitor, human (Berinert®) package insert. CSL Behring, September 2021.
- C1 esterase inhibitor, human intravenous injection (Cinryze®) package insert. ViroPharma Biologics LLC, January 2021.
- C1 esterase inhibitor subcutaneous injection (Haegarda®) package insert. CSL Behring, October 2020.
- C1 esterase inhibitor, recombinant (Ruconest®) package insert. Pharming Healthcare Inc., April 2020.
- Ecallantide subcutaneous injection (Kalbitor®) package insert. Takeda Pharmaceuticals America, Inc., November 2021.
- Eculizumab intravenous injection (Soliris®) package insert. Alexion Pharmaceuticals, Inc., April 2021.
- Icatibant subcutaneous injection (Firazyr®) package insert. Takeda Pharmaceuticals America, Inc., September 2020.
- Icatibant subcutaneous injection (Sajazir®) package insert. Cycle Pharmaceuticals LTD., June 2021.
- Lanadelumab subcutaneous injection (Takhzyro®) package insert. Takeda Pharmaceuticals America, Inc., February 2022.
- Pegcetacoplan subcutaneous solution (Empaveli®) package insert. Apellis Pharmaceuticals, Inc., August 2021.
- Ravulizumab intravenous injection (Ultomiris®) package insert. Alexion Pharmaceuticals, Inc., January 2022.
- Agalsidase beta injection (Fabrazyme®) package insert. Genzyme Corporation, August 2021.
- Alglucosidase alfa injection (Lumizyme®) package insert. Genzyme Corporation, July 2021.
- Avalglucosidase alfa intravenous injection (Nexviazyme®) package insert. Genzyme Corporation, August 2021.
- Elapegademase intramuscular injection (Revcovi®) package insert. Leadiant Biosciences, November 2021.
- Elosulfase injection (Vimizim®) package insert. BioMarin Pharmaceutical Inc., January 2021.
- Galsulfase injection (Naglazyme®) package insert. BioMarin Pharmaceutical Inc., April 2020.
- Idursulfase injection (Elaprase®) package insert. Shire Human Genetic Therapies, Inc., October 2021.
- Imiglucerase injection (Cerezyme®) package insert. Genzyme Corporation, January 2022.
- Laronidase intravenous infusion (Aldurazyme®) package insert. Genzyme Corporation, December 2019.
- Migalastat oral capsules (Galafold®) package insert. Amicus Therapeutics US, LLC, December 2021.
- Sacrosidase oral solution (Sucraid®) package insert. QOL Medical, LLC, August 2021.
- Sebelipase injection (Kanuma®) package insert. Alexion Pharmaceuticals, Inc., November 2021.
- Taliglucerase alfa injection (Elelyso®) package insert. Pfizer, July 2021.
- Velaglucerase alfa injection (Vpriv®) package insert. Takeda Pharmaceuticals America, Inc., October 2021.
- Vestronidase alfa-vjbk injection (Mepsevii®) package insert. Ultragenyx Pharmaceutical Inc., December 2020.
- Protein C concentrate (Ceprotin®) package insert. Baxalta US Inc., September 2021.
- Asfotase alfa injection (Strensiq®) package insert. Alexion Pharmaceuticals, Inc., April 2021.
- Cerliponase alfa injection (Brineura®) package insert. BioMarin Pharmaceutical Inc., July 2020.
- Ramaswami U, Parini R, Kampmann C, Beck M. Safety of agalsidase alfa in patients with Fabry disease under 7 years. Acta Paediatrica. 2011;100(4):605-11.
Cyclooxygenase-2 Inhibitors
Cyclooxygenase-2 Inhibitors - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 21, 2023
- July 23, 2021
- July 2019
- May 2019
- May 2016
- Oct. 2014
- Feb. 2013
- Dec. 2012
- March 2011
- Jan. 2011
- Oct. 2007
- Feb. 2006
- Jan. 2006
- Jan. 2004
- Jan. 2003
- Initially developed
- Jan. 2002
1. Dosage
Celecoxib, a selective cyclooxygenase-2 (COX-2) inhibitor nonsteroidal anti-inflammatory drug (NSAID), demonstrates anti-inflammatory, analgesic, and antipyretic effects through inhibiting prostaglandin synthesis, predominantly by inhibiting COX-2. Like nonselective NSAIDs, celecoxib is associated with an increased risk of potentially fatal thrombotic cardiovascular events, including myocardial infarction and stroke. Therefore, celecoxib should be used cautiously in patients with cardiovascular disease or with risk factors for cardiovascular disease. To minimize the risk of celecoxib-associated cardiovascular events, the lowest celecoxib dose for the shortest treatment duration should be utilized. Celecoxib capsules are FDA-approved to manage ankylosing spondylitis, juvenile rheumatoid arthritis, osteoarthritis, acute pain, primary dysmenorrhea, and rheumatoid arthritis1-3. Celecoxib liquid is FDA approved for the acute treatment of migraine with or without aura in adult patients1,2,4.
1.1. Adults
Maximum recommended celecoxib doses are listed in Table 1. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
celecoxib (Celebrex®) | 50 mg, 100 mg, 200 mg, 400 mg capsules | acute pain (including primary dysmenorrhea) | 400 mg/day* |
ankylosing spondylitis | 400 mg/day | ||
osteoarthritis | 200 mg/day | ||
rheumatoid arthritis | 400 mg/day | ||
celecoxib (Elyxyb®) | 120 mg/4.8 mL (25 mg/mL) oral solution | acute migraine (with or without aura) | 120 mg/day |
* An additional 200 mg dose may be given on the first day only to manage acute pain
1.2. Pediatrics
Celecoxib is FDA-approved for use in pediatric patients 2 years of age and older with a diagnosis of juvenile rheumatoid arthritis (JRA), now also known as juvenile arthritis (JA) or juvenile idiopathic arthritis (JIA). However, celecoxib long-term cardiovascular toxicity as well as extended treatment for greater than six months have not been evaluated in pediatric patients. Therefore, the lowest celecoxib dose for the shortest treatment duration should be employed. Celecoxib safety and efficacy have not been determined in pediatric patients younger than 2 years of age1-3. Recommended celecoxib pediatric dosages are summarized in Table 2.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
celecoxib (Celebrex®) | 50 mg, 100 mg capsules | juvenile rheumatoid arthritis (JRA)/ juvenile arthritis (JA)/juvenile idiopathic arthritis (JIA) |
Greater than or equal to 2 years of age:
|
1.3. Hepatic Impairment
In patients with moderate hepatic impairment (Child-Pugh Class B), the celecoxib dose should be reduced by 50%. Celecoxib is not recommended for use in patients with severe hepatic impairment.
1.4 Renal Impairment
1.5 Poor Metabolizers of CYP2C9 Substrates
2. Duration of Therapy
Due to the potential for increased cardiovascular and gastrointestinal adverse events, celecoxib and amlodipine/celecoxib should be prescribed as the lowest effective dose for the shortest treatment duration that satisfies patient treatment goals.
2.1. Therapy Limits
- Celecoxib is prescribed on an as needed basis in the management of acute pain or dysmenorrhea. However, treatment regimens extending beyond a two-week time period will be evaluated.
- Celecoxib dosages used in osteoarthritis, rheumatoid arthritis, familial adenomatous polyposis, and ankylosing spondylitis may be chronically administered based on patient need.
- Celecoxib safety and efficacy in pediatric patients 2 years of age and older with JRA for greater than a six-month treatment duration have not been established. Patient profiles containing prescriptions for JRA for greater than 6 months will be reviewed.
2.2. COX-2 Inhibitor Use in Elderly Patients
Elderly patients are frequently prescribed a COX-2 specific NSAID like celecoxib to manage acute and chronic pain. Several issues surface with COX-2 inhibitor use in elderly patients, including potential adverse effects and drug interactions. NSAID-induced gastrointestinal toxicity is prevalent in the elderly; therefore, COX-2 inhibitors like celecoxib or nonselective NSAIDs plus proton pump inhibitors may offer safer alternatives to these patients. Renal toxicity as well as adverse central nervous system effects are more prevalent in elderly patients due to changes in metabolism, underlying disease states, and concurrent drug therapy and should be considered prior to prescribing celecoxib, especially in higher doses. The potential for increased cardiovascular risk with COX-2 inhibitor use is also a factor when evaluating NSAID therapy in elderly patients. Elderly patients prescribed celecoxib, especially those at higher risk, should be evaluated for appropriateness of therapy as well as potential for drug-drug interactions. Appropriate therapy duration and dosages should also be assessed. Preventive measures such as gastric antisecretory agents administered should be considered in some individuals to reduce GI complications. Medication profiles of elderly patients greater than 60 years of age prescribed celecoxib in high doses or in patients with increased risk factors for adverse events or drug-drug interactions will be reviewed.
2.3. Selective NSAID Use and Cardiovascular Risk
Some clinical trials have shown that patients prescribed selective and nonselective NSAIDs may be at increased risk for serious cardiovascular (CV) thrombotic events, myocardial infarction, and stroke, all of which can be fatal. Patients at greater risk are those with known CV disease or risk factors for CV disease. Due to the lack of long-term clinical trial data, CV risks associated with NSAID use remains controversial, especially in high-risk patients. Risk also varies between nonselective NSAIDs and cyclooxygenase-2 (COX-2) inhibitors, as well as between individual NSAIDs. The Center for Drug Evaluation and Research has determined that the increased risk of CV events associated with NSAID use should be considered a class effect for both selective and nonselective NSAIDs until more results are available. Patients should be prescribed the lowest effective NSAID dose for the shortest possible treatment duration to minimize the potential for cardiovascular adverse events.
NSAIDs may induce new onset hypertension or worsen pre-existing hypertension in some patients, which may contribute to the development of cardiovascular adverse events. Blood pressure should be routinely monitored in patients prescribed NSAIDs.
NSAIDs may cause fluid retention or edema in some patients and should be used cautiously in patients with a history of fluid retention or heart failure.
2.4. Selective NSAID use and Gastrointestinal Risk
Like nonselective NSAIDs, celecoxib use may be associated with an increased risk of serious gastrointestinal (GI) adverse events, including potentially fatal GI bleeding, ulceration, or gastric/intestinal perforation. The risk of NSAID-associated severe GI adverse events increases in patients with a history of peptic ulcer disease, GI bleeding, smoking, alcohol use, concurrent use of anticoagulants or oral corticosteroids, advanced age, poor health and prolonged NSAID use. However, celecoxib may be associated with fewer GI adverse events due to selective COX-2 inhibition. Short-term trials (3 to 6 months) have shown celecoxib to be associated with significantly fewer GI complications compared to a nonselective NSAID plus a proton pump inhibitor (PPI) (e.g., diclofenac plus omeprazole) and a Cochrane review found significantly fewer ulcer complications with COX-2 inhibitors compared to nonselective NSAIDs. Chan and cohorts, in a randomized, double-blind trial, found that celecoxib administered concurrently with the PPI, esomeprazole, was significantly better in preventing ulcer bleeding in high risk patients compared to celecoxib monotherapy. In a case-control study, Patterson et al. observed that outpatients in the United States using commonly prescribed nonselective NSAIDs and COX-2 inhibitors from 1999 to 2003 were two times more likely to be hospitalized for peptic ulcer bleeding and perforation following nonselective NSAID use compared to those receiving celecoxib. Additionally, a recent small study suggests that lower GI bleeding may occur less frequently following COX-2 inhibitor use compared to that seen with nonselective NSAIDs. This study was criticized, though, as investigators used hemoglobin decrease rather than documented lower GI bleeds to assess outcomes. Further long-term studies are necessary to substantiate the perceived lower GI risk associated with COX-2 inhibitors.
3. Duplicative Therapy
The combined use of specific COX-2 inhibitors and nonspecific COX-1, COX-2 inhibitors does not provide additional therapeutic benefit and may result in additive adverse effects, including gastrointestinal toxicity. However, because celecoxib lacks antiplatelet effects, celecoxib may be used concurrently with low-dose aspirin prescribed for cardiovascular prophylaxis. While an increased incidence of gastrointestinal adverse effects has been observed with combined celecoxib-aspirin therapy, the combination is cautiously warranted due to the potential cardiovascular benefits. Concurrent therapy with celecoxib and nonspecific COX-1, COX-2 inhibitors other than low-dose aspirin is not recommended and will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically significant for celecoxib are summarized in Table 3. Only those drug-drug interactions classified as clinical significance contraindicated or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
amlodipine/celecoxib | clopidogrel | combined administration may reduce clopidogrel antiplatelet activity and increase risk of thrombotic events as both medications are metabolized by the CYP3A4 enzyme (CYP3A4 converts clopidogrel to active metabolite) | administer cautiously together and observe patients for changes in clopidogrel efficacy | moderate (CP) |
amlodipine/celecoxib | CYP3A4 inducers (e.g., rifampin) | adjunctive administration may result in reduced amlodipine serum levels and therapeutic efficacy due to induction of amlodipine metabolism by CYP system | observe patients for sustained therapeutic effects and adjust amlodipine dosages, if needed; may consider alternate therapy that does not induce CYP3A4 | moderate (CP) |
amlodipine/celecoxib | CYP3A4 inhibitors (e.g., clarithromycin) | co-administration may result in enhanced amlodipine pharmacologic and adverse effects, including hypotension and acute kidney injury, as amlodipine is metabolized by CYP3A4 | use cautiously together, if at all; observe patients for amplified pharmacologic/ adverse effects; adjust dosages as necessary | major (CP) |
amlodipine/celecoxib | simvastatin | due to an unknown mechanism, combined use may cause enhanced simvastatin availability (increased area under curve, maximum concentration) and increased pharmacologic/ adverse effects including myopathy and rhabdomyolysis | avoid combined use, if possible; if combined administration necessary, simvastatin dose should not exceed 20 mg/day; patients maintained on high-dose simvastatin who require amlodipine therapy should be converted to another statin with fewer interactions | major (CP) |
amlodipine/celecoxib | tacrolimus | increased tacrolimus serum levels with possible enhanced pharmacologic/ adverse effects may result with combined use; tacrolimus is a CYP3A4 substrate with a narrow therapeutic index and amlodipine is weak CYP3A4 inhibitor | use cautiously together; monitor patients for tacrolimus adverse effects (e.g., renal dysfunction, cholestasis, paresthesias) | moderate (CP) |
celecoxib | ACE inhibitors, angiotensin receptor blockers | potential for decreased antihypertensive effects, increased renal impairment risk with combined therapy; NSAIDs may block production of vasodilator and natriuretic prostaglandins | monitor blood pressure and renal function, modify therapy as needed; use combination cautiously in elderly; nonacetylated salicylates, sulindac, may be alternative NSAIDS – have less inhibitory effect on prostaglandin synthesis | moderate (CP) |
celecoxib | anticoagulants/ aspirin/ thrombolytic agents | potential for increased gastrointestinal and bleeding adverse effects most likely due to either additive effects and/or decreased platelet function | administer combination cautiously and observe for adverse bleeding events | major (CP) |
celecoxib | corticosteroids | potential for increased gastrointestinal adverse effects with combined therapy | monitor for adverse effects; avoid prolonged concurrent administration | moderate (CP) |
celecoxib | CYP2C9 inhibitors (e.g., fluconazole, amiodarone, delavirdine) | celecoxib metabolized by CYP2C9; combination may increase celecoxib serum levels and potential for toxicity | use cautiously together with lowest effective celecoxib dose; monitor for adverse effects | moderate (CP) |
celecoxib | immune suppressants | celecoxib may mask infection symptoms (e.g., fever, swelling) | use combination cautiously | moderate (CP) |
celecoxib | lithium | NSAIDs may decrease lithium clearance by blocking renal tubular prostaglandins (may contribute to lithium clearance; may result in increased lithium levels and potential for adverse effects | avoid combination, if possible; if concurrent therapy necessary, monitor lithium levels and signs/ symptoms of lithium toxicity; sulindac, aspirin do not affect lithium clearance -may be alternative NSAIDS | moderate (CP) |
celecoxib | loop diuretics (e.g., furosemide) | potential for impaired diuretic and antihypertensive activity of loop diuretic and increased risk of renal insufficiency due to NSAID-associated decreased renal prostaglandin production | administer combination cautiously; monitor for signs/symptoms of renal dysfunction and reduced diuretic/ antihypertensive efficacy | moderate (CP) |
celecoxib | methotrexate | adjunctive administration may lead to increased methotrexate serum levels and the potential for adverse effects (e.g., hematologic, gastrointestinal toxicity), especially with higher methotrexate doses, due to NSAID- associated reductions in renal methotrexate clearance | administer combination cautiously together; observe for enhanced methotrexate pharmacologic and adverse events | major (CP) |
celecoxib | SNRIs/SSRIs | concurrent administration may increase risk of enhanced bleeding activity as serotonin release from platelets necessary for adequate hemostasis | monitor for signs/symptoms of bleeding with adjunctive administration | moderate (CP) |
celecoxib | warfarin | combined therapy may result in increased INR and increased risk of gastrointestinal adverse effects, especially in elderly, most likely due to competition for metabolism through CYP2C9 | monitor anticoagulant activity, especially in first several days of combination therapy; adjust warfarin doses as necessary | major (CP) |
Legend:
- * - Clinical Pharmacology
- ACE - angiotensin converting enzyme
- NSAIDs - nonsteroidal anti-inflammatory drugs
- SNRIs - serotonin norepinephrine reuptake inhibitors
- SSRIs - selective serotonin reuptake inhibitors
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: June 7, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed June 7, 2023.
- Celecoxib (Celebrex®) package insert. Pfizer Inc., April 2021.
- Celecoxib (Elyxyb®) package insert. BioDelivery Sciences International, Inc., September 2021.
- Chan FKL, Lanas A, Scheiman J, et al. Celecoxib versus omeprazole and diclofenac in patients with osteoarthritis and rheumatoid arthritis (CONDOR): a randomised trial.Lancet. 2010;376:173–79.
- Rostom A, Muir K, Dubé C, et al. Gastrointestinal safety of cyclooxygenase-2 inhibitors: a Cochrane collaboration systematic review. Clin Gastroenterol Hepatol 2007;5(7):818-28.
- Chan FKL, Wong VWS, Suen BY, et al. Combination of a cyclo-oxygenase-2 inhibitor and a proton-pump inhibitor for prevention of recurrent ulcer bleeding in patients at very high risk: a double-blind, randomised trial. Lancet. 2007;369:1621–26.
- Patterson MK, Castellsague J, Walker AM. Hospitalization for peptic ulcer and bleeding in users of selective COX-2 inhibitors and nonselective NSAIDs with special reference to celecoxib. Pharmacoepidemiol Drug Saf. 2008;17:982-8.
- Rahme E, Bernatsky S. NSAIDs and risk of lower gastrointestinal bleeding. Lancet. 2010;376:146-7.
- United States Food and Drug Administration. FDA Drug Safety Communication: FDA strengthens warning that non-aspirin nonsteroidal anti-inflammatory drugs (NSAIDs) can cause heart attacks or strokes. (July 9, 2015) Available at: http://www.fda.gov/Drugs/DrugSafety/ucm451800.htm. Accessed June 8, 2021.
- Joshi GP, Gertler R, Fricker R. Cardiovascular thromboembolic adverse effects associated with cyclooxygenase-2 selective inhibitors and nonselective antiinflammatory drugs. Anesth Analg. 2007;105:1793–804.
- Shaya FT, Blume SW, Blanchette CM, et al. Selective cyclooxygenase-2 inhibition and cardiovascular effects: An observational study of a Medicaid population. Arch Intern Med. 2005;165:181-6.
- Strand V. Are COX-2 inhibitors preferable to non-selective non-steroidal anti-inflammatory drugs in patients with risk of cardiovascular events taking low-dose aspirin? Lancet. 2007;370(9605):2138-51.
- McGettigan P, Henry D. Cardiovascular risk and inhibition of cyclooxygenase: a systematic review of the observational studies of selective and nonselective inhibitors of cyclooxygenase 2. JAMA. 2006;296(13):1633-44.
- Antman EM. Evaluating the cardiovascular safety of nonsteroidal anti-inflammatory drugs. Circulation. 2017;135(21):2062-72.
- Sowers JR, White WB, Pitt B, et al. The effects of cyclooxygenase-2 inhibitors and nonsteroidal anti-inflammatory therapy on 24-hour blood pressure in patients with hypertension, osteoarthritis, and type 2 diabetes mellitus. Arch Intern Med. 2005;165:161-8.
- Silverstein FE, Faich G, Goldstein JL, et al. Gastrointestinal toxicity with celecoxib vs. nonsteroidal anti-inflammatory drugs for osteoarthritis and rheumatoid arthritis. The CLASS study: a randomized trial. JAMA. 2000;284;1247-55.
Direct Oral Anticoagulants
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 2022; March 2020; May 2018; Feb. 2018.
- Initially developed
- March 2017
1. Dosage
1.1. Adults
Direct oral anticoagulants (DOACs) are FDA-approved to treat and prevent deep venous thrombosis (DVT) and pulmonary embolism (PE), reduce the risk of stroke and systemic embolism from non-valvular atrial fibrillation, and to be used as prophylaxis against DVT and PE after knee and hip surgery. DOACs work by interfering with pathways in the coagulation cascade: directly inhibiting thrombin (e.g., dabigatran); or selectively, reversibly inhibiting factor Xa (e.g., apixaban, edoxaban, rivaroxaban)1-7. In April 2020, Portola Pharmaceuticals removed Bevyxxa® (betrixaban) from the market for independent business reasons8 .
Maximum recommended adult dosages for DOACs are summarized in Tables 1 and 2. Medication profiles identifying patients prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
dabigatran (Pradaxa®) | 75 mg, 110 mg, 150 mg capsules | Reduction in risk of stroke and systemic embolism in non-valvular AF |
|
dabigatran | Treatment of DVT and PE/reduction in the risk of recurrence of DVT and PE |
|
|
dabigatran | Prophylaxis of DVT and PE following hip replacement surgery |
|
|
Legend:
- AF = atrial fibrillation
- DVT = deep venous thrombosis
- PE = pulmonary embolism
- *Requires 5 to 10 days parenteral therapy before initiation of therapy
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
apixaban (Eliquis®) | 2.5 mg, 5 mg tablets | Reduction of risk of stroke and systemic embolism in patients with non-valvular AF | 5 mg twice daily# |
apixaban | Prophylaxis of DVT following hip or knee replacement surgery | 2.5 mg twice daily | |
apixaban | Treatment of DVT and PE | 10 mg twice daily for 7 days, then 5 mg twice daily | |
apixaban | Reduction in risk of recurrence of DVT and PE | 2.5 mg twice daily^ | |
edoxaban (Savaysa®) | 15 mg, 30 mg, 60 mg tablets |
Non-valvular AF: CrCl greater than 50 mL/min and less than or equal to 95 mL/min |
60 mg once daily+ |
edoxaban |
Non-valvular AF: CrCl 15-50 mL/min |
30 mg once daily | |
edoxaban |
Treatment of DVT and PE: greater than or equal to 60 kg |
60 mg once daily* | |
edoxaban |
Treatment of DVT and PE: less than 60 kg, CrCl 15-50 mL/min, adjunctive therapy with certain P-gp inhibitors |
30 mg once daily* | |
rivaroxaban (Xarelto®) | 2.5 mg, 10 mg, 15 mg, 20 mg tablets, 1 mg/ 1 mL granules for suspension | Reduction in the risk of stroke in non-valvular AF, CrCl greater than 50 mL/min | 20 mg once daily with evening meal |
rivaroxaban | Reduction in the risk of stroke in non-valvular AF, CrCl less than or equal to 50 mL/min | 15 mg once daily with evening meal | |
rivaroxaban | Treatment of DVT and PE, CrCl greater than or equal to 15 mL/min | 15 mg twice daily for 21 days, then 20 mg once daily | |
rivaroxaban | Reduction in risk of recurrence of DVT and PE (following initial treatment), CrCl greater than or equal to 15 mL/min | 10 mg once daily^ | |
rivaroxaban | Prophylaxis of DVT following hip or knee replacement surgery, CrCl greater than or equal to 15 mL/min | 10 mg once daily | |
rivaroxaban | VTE prophylaxis in hospitalized adults with acute illness and limited mobility and other risk factors for VTE, CrCl greater than or equal to 15 mL/min | 10 mg once daily | |
rivaroxaban | Reduction of major cardiovascular event risk in patients with chronic coronary heart disease, peripheral artery disease | 2.5 mg twice daily, plus aspirin 75-100 mg once daily |
Legend
- AF = atrial fibrillation
- DVT = deep venous thrombosis
- PE = pulmonary embolism
- P-gp = P-glycoprotein
- VTE = venous thromboembolism
- + Avoid in patients with CrCl greater than 95 ml/min due to increased risk of ischemic stroke compared to warfarin
- * Requires 5 to 10 days parenteral therapy before initiation of therapy
- # Dose should be decreased to 2.5 mg twice daily in patients receiving strong inhibitors of both CYP3A4 and P-glycoprotein concurrently, or those with at least two of the following: age greater than or equal to 80 years, body weight less than or equal to 60 kg, or serum creatinine greater than or equal to 1.5 mg/dL
- ^ Following at least 6 months of DVT or PE treatment
1.2. Pediatrics
Apixaban and edoxaban are not recommended for use in pediatric patients, as the safety and efficacy have not been established for these agents in this patient population .1,2,5,6 .
In June 2021, the FDA approved Pradaxa® (dabigatran) oral pellets to treat venous thromboembolism after receiving at least five days of injectable or intravenous treatment for blood clots and to reduce the risk of recurrent thromboembolism in patients 3 months to less than twelve years of age who have completed treatment for a previous venous thromboembolism9.
Dabigatran oral capsules were approved to treat venous thromboembolism after receiving at least five days of injectable or intravenous treatment for blood clots and to reduce the risk of recurrent thromboembolism in patients 8 years of age and older who have completed treatment for a previous venous thromboembolism9.
In December 2021, the FDA approved Xarelto® (rivaroxaban) tablets and oral suspension to treat venous thromboembolism and to reduce the risk of recurrent venous thromboembolism in patients less than 18 years of age who received at least five days of injectable or intravenous treatment for blood clots. Rivaroxaban was also approved to reduce the risk of blood clots in patients two years of age and older with congenital heart disease after the Fontan procedure10 .
Maximum recommended pediatric dosages for DOACs are summarized in Table 3 through Table 6. Medication profiles identifying patients prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
dabigatran (Pradaxa®) oral pellets! | 20 mg, 30 mg, 40 mg, 50 mg, 110 mg, 150 mg oral pellets | Treatment of VTE and to reduce the risk of VTE recurrence: 3 months to less than or equal to 2 years of age |
|
Legend
- VTE = venous thromboembolism
- ! Avoid dabigatran in patients with a CrCl less than 50 mL/min
- * Requires at least 5 days of parenteral therapy before initiation of therapy for the treatment of VTE
- ^ Following appropriate treatment duration of DVT or PE treatment if used to reduce the risk of VTE recurrence
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
dabigatran (Pradaxa®) oral pellets! | 20 mg, 30 mg, 40 mg, 50 mg, 110 mg, 150 mg oral pellets | Treatment of VTE and to reduce the risk of VTE recurrence: 2 to less than 12 years of age |
|
Legend
- VTE = venous thromboembolism
- ! Avoid dabigatran in patients with a CrCl less than 50 mL/min
- * Requires at least 5 days of parenteral therapy before initiation of therapy for the treatment of VTE
- ^ Following appropriate treatment duration of DVT or PE treatment if used to reduce the risk of VTE recurrence
Drug Name |
Dosage Form/Strength |
Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
dabigatran (Pradaxa®) capsules! | 75 mg, 110 mg, 150 mg oral capsules | Treatment of VTE and to reduce the risk of VTE recurrence: 8 to less than 18 years of age | 11 kg to less than 16 kg*^ 75 mg twice daily 16 kg to less than 26 kg*^ 110 mg twice daily 26 kg to less than 41 kg*^ 150 mg twice daily 41 kg to less than 61 kg*^ 185 mg twice daily 61 kg to less than 81 kg*^ 220 mg twice daily 81 kg or greater*^ 260 mg twice daily |
Legend
- VTE = venous thromboembolism
- ! Avoid dabigatran in patients with a CrCl less than 50 mL/min
- * Requires at least 5 days of parenteral therapy before initiation of therapy for the treatment of VTE
- ^ Following appropriate treatment duration of DVT or PE treatment if used to reduce the risk of VTE recurrence
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage± |
---|---|---|---|
rivaroxaban (Xarelto®) | 10 mg, 15 mg, 20 mg tablets, 1 mg/ 1 mL granules for suspension | Treatment of VTE and to reduce the risk of VTE recurrence: less than 18 years of age |
|
Thromboprophylaxis in patients 2 years of age and older with congenital heart disease who have undergone Fontan procedure |
|
Legend
- VTE = venous thromboembolism
- ± Patients less than 6 months of age should meet the following criteria: at birth at least 37 weeks gestation, have at least 10 days of oral feeding, and weigh greater than or equal to2.6 kg at the time of dosing
- * Requires at least 5 days parenteral therapy before initiation of therapy for treatment of VTE
- ^ Following appropriate treatment duration of DVT or PE treatment if used to reduce the risk of VTE recurrence
- # May only use granules for suspension
- ! May use granules for suspension or oral tablets
2. Duration of Therapy
There is no basis for limiting DOAC therapy when prescribed to prevent thromboembolic events associated with cardiovascular or cerebrovascular disease in those with a high risk of recurrence and low risk of bleeding (e.g., unprovoked proximal DVT, recurrent DVT). However, DOAC treatment duration varies, based on medication utilized, indication for use, underlying disease states, and patient factors11. The 2021 “Antithrombotic Therapy for VTE Disease: Second Update of the CHEST Guidelines and Expert Review Panel Report” indicates that extended-phase anticoagulation with DOACs does not have a defined stop date, and patients have been monitored for up to four years while on extended-phase anticoagulation. DOAC treatment durations are summarized in Table 7 through Table 10.
Drug Name | Indication | Maximum Treatment Duration |
---|---|---|
dabigatran (Pradaxa®) | Reduction of risk of stroke and systemic embolism in non-valvular AF | indefinite |
DVT and PE treatment | 3-12 months | |
DVT and PE prevention | indefinite | |
Prophylaxis of DVT and PE following hip replacement surgery | 28-35 days |
Legend
- AF = atrial fibrillation
- DVT = deep venous thrombosis
- PE = pulmonary embolism
Drug Name | Indication | Maximum Treatment Duration |
---|---|---|
apixaban (Eliquis®) | Reduction of risk of stroke and systemic embolism in patients with non-valvular AF | indefinite |
Prophylaxis of DVT following hip or knee replacement surgery | 35 days (hip); 12 days (knee) | |
Treatment of DVT and PE | 3-12 months | |
Reduction in risk of recurrence of DVT and PE | indefinite after at least 6 months of treatment | |
edoxaban (Savaysa®) | Reduction of risk of stroke and systemic embolism in patients with non-valvular AF | indefinite |
Treatment of DVT and PE | maximum of 12 months after 5-10 days of initial therapy with a parenteral anticoagulant | |
rivaroxaban (Xarelto®) | Reduction in the risk of stroke in non-valvular AF | indefinite |
Treatment of DVT and PE | 3-12 months | |
Reduction in risk of recurrence of DVT and PE | up to 12 months after an initial 6 months of treatment | |
Prophylaxis of DVT following hip or knee replacement surgery | 35 days (hip); 12 days (knee) | |
VTE prophylaxis in hospitalized adults with acute illness and limited mobility and other risk factors for VTE | 31 to 39 days | |
Reduction of major cardiovascular event risk in patients with chronic coronary heart disease, peripheral artery disease | indefinite |
Legend
- AF = atrial fibrillation
- DVT = deep venous thrombosis
- PE = pulmonary embolism
The DIVERSITY trial was conducted in pediatric populations to determine the safety and efficacy of dabigatran compared to the standard of care for the treatment of VTE. The median duration of dabigatran for VTE was 84.5 days12. An additional trial evaluated the safety and effectiveness of dabigatran in patients requiring secondary VTE prophylaxis who completed the DIVERSITY trial. Pediatric patients were treated with dabigatran for up to 12 months after the initial treatment for VTE13.
Drug Name | Indication | Maximum Treatment Duration |
---|---|---|
dabigatran (Pradaxa®) | VTE treatment | 3-12 months |
Reduction in risk of recurrence of DVT and PE | up to 12 months after initial treatment for VTE |
The EINSTEIN Junior trial studied the safety and efficacy of rivaroxaban compared to standard of care in pediatric patients with VTE. When appropriate, treatment for VTE and VTE risk reduction was extended to up to 12 months in duration15. The UNIVERSE trial assessed the safety and efficacy of rivaroxaban for thromboprophylaxis in pediatric patients with congenital heart disease who have undergone the Fontan procedure. Participants took rivaroxaban for up to 12 months in the study16. However, thromboembolic risk may persist for several years after the procedure, and further therapy with antiplatelet or anticoagulant drugs may be appropriate16.
Drug Name | Indication | Maximum Treatment Duration |
---|---|---|
rivaroxaban (Xarelto®) | VTE treatment | 3-12 months |
Reduction in risk of recurrence of VTE | up to 12 months | |
Thromboprophylaxis in patients at least 2 years of age with congenital heart disease who have undergone Fontan procedure | up to 12 months! |
Legend
- ! Specific patient factors may require a longer duration of antiplatelet or anticoagulant therapy
3. Duplicative Therapy
Combined administration of multiple DOACs should be avoided. Concomitant DOAC use results in additive factor Xa inhibition and prolonged prothrombin time (PT), which increases bleeding risk 1-7. No evidence demonstrating increased efficacy or augmentation of therapy from use of multiple DOACs currently exists.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Major drug-drug interactions considered clinically significant for DOACs are summarized in Table 11. Only those drug-drug interactions classified as clinical significance level 1/contraindicated or those considered life threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level# |
---|---|---|---|---|
dabigatran | P-gp inhibitors (e.g., amiodarone, clarithromycin) | increases dabigatran exposure and bleeding risk |
|
dabigatran, major; itraconazole, contraindicated (DrugReax) 2 – major (CP) |
dabigatran, edoxaban | P-gp inducers (e.g., rifampin) | reduces serum dabigatran, edoxaban serum levels and increases thrombosis risk | avoid concurrent use | major (DrugReax) 2 – major (CP) |
DOACs | anticoagulants, NSAIDs, aspirin, antiplatelet agents, fibrinolytics | increases bleeding risk | avoid concurrent use; if adjunctive administration necessary, use cautiously and monitor closely for signs/ symptoms of bleeding | major (DrugReax) anticoagulants, 2 – major; fibrinolytics, 1 – severe (CP) |
DOACs | defibrotide | enhances DOAC pharmacologic effects, increasing bleeding risk | avoid concurrent use | contraindicated (DrugReax) 1 – severe (CP) |
DOACs | selective serotonin reuptake inhibitors (SSRIs)/ serotonin norepinephrine reuptake inhibitors (SNRIs) | may increase bleeding risk | avoid concurrent use; if adjunctive administration necessary, use cautiously and monitor closely for signs/ symptoms of bleeding | major (DrugReax) 2 – major (CP) |
DOACs | orlistat | may increase INR due to decreased vitamin K absorption | if adjunctive administration necessary, use cautiously and monitor closely for changes in coagulation factors | major (DrugReax) 3 – moderate (CP) |
rivaroxaban, apixaban | dual P-gp and CYP3A4 inhibitors (e. g., ritonavir, ketoconazole) | increases serum rivaroxaban, apixaban levels, which increases bleeding risk | avoid concurrent use; reduce dose of apixaban by 50%; avoid use in patients receiving apixaban 2.5 mg twice daily | major (DrugReax) 2 – major (CP) |
rivaroxaban, apixaban | dual P-gp and CYP3A4 inducers (e.g., rifampin, phenytoin, carbamazepine) | decreases rivaroxaban exposure by 50%; rifampin decreases apixaban exposure by 50%; increases thrombosis risk | avoid concurrent use | major (DrugReax) 2 – major (CP) |
5. References
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed March 1, 2022.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed March 1, 2022.
- Dabigatran etixilate mesylate capsules (Pradaxa®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., June 2021.
- Dabigatran etixilate mesylate pellets (Pradaxa®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc., June 2021.
- Apixaban tablets (Eliquis®) package insert. Bristol-Myers Squibb Company, September 2021.
- Edoxaban tablets (Savaysa®) package insert. Daiichi Sankyo, Inc., September 2021.
- Rivaroxaban tablets and granules for suspension (Xarelto®) package insert. Janssen Pharmaceuticals, Inc., January 2022.
- Smith, I. Response to PREA non-compliance letter. Portola Pharmaceuticals. October 2020. Accessed March 1, 2022.
- U.S. Food and Drug Administration. FDA approved first oral blood thinning medication for children. June 2021. Available at: https://www.fda.gov/news-events/press-announcements/fda-approves-first-oral-blood-thinning-medication-children#:~:text=Today%2C%20the%20U.S.%20Food%20and,by%20injection%20for%20at%20least. Accessed March 1, 2022.
- U.S. Food and Drug Administration. FDA approved drug to treat, help prevent types of blood clots in certain pediatric populations. December 2021. Available at: https://www.fda.gov/drugs/news-events-human-drugs/fda-approves-drug-treat-help-prevent-types-blood-clots-certain-pediatric-populations#:~:text=FDA%20has%20approved%20Xarelto%20(rivaroxaban,days%20of%20injectable%20or%20intravenous. Accessed March 1, 2022.
- Stevens SM, Woller SC, Kreuziger LB, et al. Executive summary: antithrombotic therapy for vte disease: second update of the chest guideline and expert panel report. CHEST. 2021;160(6):2247-2259.
- Halton J, Brandão LR, Luciani M, et al. Dabigatran etexilate for the treatment of acute venous thromboembolism in children (Diversity): a randomised, controlled, open-label, phase 2b/3, non-inferiority trial. The Lancet Haematology. 2021;8(1):e22-e33.
- Brandão LR, Albisetti M, Halton J, et al. Safety of dabigatran etexilate for the secondary prevention of venous thromboembolism in children. Blood. 2020;135(7):491-504.
- Bosch A, Albisetti M. Management of venous thromboembolism in children: current recommendations and therapeutic options. Ther Clin Risk Manag. 2020;16:673-679.
- Male C, Lensing AWA, Palumbo JS, et al. Rivaroxaban compared with standard anticoagulants for the treatment of acute venous thromboembolism in children: a randomised, controlled, phase 3 trial. The Lancet Haematology. 2020;7(1):e18-e27.
- McCrindle BW, Michelson AD, Van Bergen AH, et al. Thromboprophylaxis for children post‐fontan procedure: insights from the universe study. Journal of the American Heart Association. 2021;10(22):e021765.
Exogenous Insulin Products
Exogenous Insulin Products - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Oct. 13, 2023
- Oct. 22, 2021
- Sept. 2019.
- Initially developed
- June 2017
1. Dosage
1.1. Background
Insulin is a hormone that is typically produced and secreted from pancreatic beta cells in response to elevated blood glucose by binding to receptors found on the liver, skeletal muscle, and adipose tissue cells. Carbohydrate, protein, and fat metabolism are regulated by insulin through suppressing hepatic glucose production, stimulating tissue glucose uptake, and suppressing free fatty acid release from adipose tissue. Subsequently, blood glucose levels are reduced through insulin’s mechanism. 1-3
However, there is inadequate or no insulin secretion in type 1 diabetes mellitus (DM), and there is insulin deficiency and resistance in type 2 DM. Therefore, patients with type 1 DM require insulin treatment to survive; patients with type 2 DM may require insulin when other antidiabetic agents are not able to effectively control blood glucose levels. If either type 1 or 2 DM are left untreated and/or uncontrolled, chronic hyperglycemia may lead to micro- and macrovascular complications, such as retinopathy, nephropathy, neuropathy, hypertension, dyslipidemia, and cardiovascular disease. 1-7
Exogenous insulin products are FDA-approved for use in type 1 and 2 DM. These products are used to mimic the physiologic pattern of insulin secretion. Phase 1 is basal insulin secretion, which suppresses hepatic glucose production in order to maintain blood glucose levels throughout the day. Phase 2 is increased insulin secretion in response to carbohydrate intake in order to lower postprandial blood glucose levels. Patients with type 1 DM require both basal and preprandial insulin boluses, while patients with type 2 DM may require basal and/or preprandial insulin boluses in addition to oral antidiabetic agents, diet, exercise, and weight reduction depending on the severity of their disease and glycemic control. 1-7
Glycemic targets recommended by the American Diabetes Association (ADA) and American Association of Clinical Endocrinologists and American College of Endocrinology (AACE/ACE) guidelines are summarized in Table 1 2, 8, 9. However, these targets should be individualized based on patient factors, such as life expectancy, severity of disease, comorbidities, and hypoglycemic risk. 2,8,9
Glycemic Targets | ADA – Type 1 and 2 | AACE/ACE – Adult Type 2 |
---|---|---|
Hemoglobin A1c | Adults & Pediatrics: less than 7%
| Greater than or less than 6.5% |
Preprandial blood glucose | Adults: 80–130 mg/dL
| Less than 110 mg/dL |
Postprandial blood glucose | Adults: less than 180 mg/dL | Less than 140 mg/dL |
Bedtime blood glucose | Adults & Pediatrics: 90–150 mg/dL*
| N/A |
Legend:
- ! Less stringent A1c goals of less than 7.5% may be appropriate in pediatric and adolescent patients who cannot articulate hypoglycemia symptoms; have hypoglycemia unawareness; lack access to analog insulins, advanced insulin delivery technology, and/or continuous glucose monitoring; cannot check blood glucose regularly, or have nonglycemic factors that increase A1c. A goal of less than 8.0% may be appropriate in pediatric an adolescent patients with a history of severe hypoglycemia, limited life expectancy, or where harms of treatment outweigh the benefits
- * Recommendations carried over from 2019 ADA Standards of Medical Care in Diabetes since they are not presented in the 2021 guidelines.
1.2. Adults
Dosage forms, usual dosage regimen, and maximum recommended dosage of exogenous insulin products for adult patients, categorized by time of onset, peak, and duration of action, are summarized in Tables 2-7. Lyumjev and Lyumjev KwikPen (insulin lispro) is a rapid-acting insulin that was approved in June 2020 for subcutaneous use as an injection or with an insulin pump. It is also approved for intravenous use.19 Semglee (insulin glargine-yfgn) was approved by the FDA in July 2021, and it is the first FDA approved interchangeable biosimilar insulin product. Semglee is interchangeable with Lantus (insulin glargine).
Drug Name | Dosage Form | Labeled Dosage Regimen for Type 1 Diabetes * | Labeled Dosage Regimen for Type 2 Diabetes * |
---|---|---|---|
Insulin aspart |
|
|
|
Insulin glulisine |
|
|
|
Insulin lispro |
|
|
|
Legend:
- Multiple or continuous insulin dosing may be required to maintain adequate glycemic control; should be individualized for each patient
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
- Total daily doses of ALL insulin formulations combined is typically: 0.5 to 1 units/kg/day
- Insulin needs may be affected by body weight; non-obese patients may require less insulin than obese patients
- Non-obese: 0.4 to 0.6 units/kg/day
- Obese: 0.8 to 1.2 units/kg/day
Drug Name | Dosage Form | Labeled Dosage Regimen for Type 1 Diabetes * | Labeled Dosage Regimen for Type 2 Diabetes * |
---|---|---|---|
Inhaled insulin |
|
|
|
Regular insulin |
|
|
|
Legend:
- Multiple or continuous insulin dosing may be required to maintain adequate glycemic control; should be individualized for each patient
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
- Total daily doses of ALL insulin formulations combined is typically: 0.5 to 1 units/kg/day
- Insulin needs may be affected by body weight; non-obese patients may require less insulin than obese patients
- Non-obese: 0.4 to 0.6 units/kg/day
- Obese: 0.8 to 1.2 units/kg/day
Drug Name | Dosage Form | Labeled Dosage Regimen for Type 1 Diabetes * | Labeled Dosage Regimen for Type 2 Diabetes * |
---|---|---|---|
Isophane insulin (NPH) |
|
|
|
Legend:
- Multiple or continuous insulin dosing may be required to maintain adequate glycemic control; should be individualized for each patient
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
- Total daily doses of ALL insulin formulations combined is typically: 0.5 to 1 units/kg/day
- Insulin needs may be affected by body weight; non-obese patients may require less insulin than obese patients
- Non-obese: 0.4 to 0.6 units/kg/day
- Obese: 0.8 to 1.2 units/kg/day
Drug Name | Dosage Form | Labeled Dosage Regimen for Type 1 Diabetes * | Labeled Dosage Regimen for Type 2 Diabetes * |
---|---|---|---|
Insulin degludec | Tresiba generic vial (100 units/mL – 10 mL) Tresiba generic FlexTouch pen (100 units/mL – 5 x 3 mL; 200 units/mL – 3 x 3 mL) | Initially, administer 1/3 to 1/2 of total daily insulin dose once daily Administer remainder as short-acting insulin & divided between each daily meal Insulin naive patients generally require total daily insulin dose of 0.2 - 0.4 units/kg/day Insulin degludec may be given any time of day; however, doses must be at least 8 hours apart | In adults naive to insulin, initiate with 10 units once daily Insulin degludec may be given at any time of day; however, doses must be at least 8 hours apart Titrate dosage every 3-4 days to achieve blood glucose & a1c goals in conjunction with short-acting insulin |
Insulin detemir |
|
|
|
Insulin glargine |
|
|
|
Legend:
- Multiple or continuous insulin dosing may be required to maintain adequate glycemic control; should be individualized for each patient
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
- Total daily doses of ALL insulin formulations combined is typically: 0.5 to 1 units/kg/day
- Insulin needs may be affected by body weight; non-obese patients may require less insulin than obese patients
- Non-obese: 0.4 to 0.6 units/kg/day
- Obese: 0.8 to 1.2 units/kg/day
Drug Name | Dosage Form | Usual Dosage Regimen * | Maximum Recommended Dosage * |
---|---|---|---|
Insulin aspart protamine/insulin aspart |
|
|
|
Isophane insulin (NPH)/ regular insulin |
|
|
|
Insulin lispro protamine/insulin lispro |
|
|
|
Legend:
- Multiple or continuous insulin dosing may be required to maintain adequate glycemic control; should be individualized for each patient
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
- Total daily doses of ALL insulin formulations combined is typically: 0.5 to 1 units/kg/day
- Insulin needs may be affected by body weight; non-obese patients may require less insulin than obese patients
- Non-obese: 0.4 to 0.6 units/kg/day
- Obese: 0.8 to 1.2 units/kg/day
Drug Name | Dosage Form | Usual Dosage Regimen | Maximum Recommended Dosage |
---|---|---|---|
Insulin glargine/lixisenatide | Soliqua® 100/33 pen (insulin glargine 100 units/mL and lixisenatide 33 mcg/mL – 5 x 3 mL) | 15 – 60 units/day | (15 – 60 units / 5 – 20 mcg) 60 units/20 mcg/day |
Insulin degludec/liraglutide | Xultophy® 100/3.6 pen (insulin degludec 100 units/mL and liraglutide 3.6 mg/mL – 5 x 3 mL) | 10 – 50 units/day (10 – 50 units / 0.36 – 1.8 mg) | 50 units/1.8 mg/day |
Legend:
- GLP-1 = glucagon-like peptide-1
1.3. Pediatrics
Safety and efficacy for inhaled insulin (Afrezza), insulin lispro/lispro protamine combinations (HumaLog Mix 50/50 and 75/25), insulin aspart/insulin aspart protamine combinations (NovoLog Mix 70/30), and insulin-GLP-1 combinations (Soliqua 100/33 and Xultophy 100/3.6) have not been studied or established in pediatric patients. 10-13, 14, 19, 32, 35, 36-38
The insulin aspart formulation sold under the trade name Fiasp was approved for pediatric use in patients 2 years of age or older in 2020.39
Recommended age requirements for insulin products approved in pediatric patients are summarized in the following tables.
Usual dosage regimens and maximum recommended dosages are similar to adult patients.
Drug Name | Dosage Form | Approved Age Requirements * | Maximum Recommended Dosage * |
---|---|---|---|
Insulin aspart |
| Children greater than or equal to 2 years and adolescents | No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Insulin glulisine |
| Children greater than or equal to 4 years and adolescents | No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Insulin lispro |
| Children greater than or equal to 3 years and adolescents | No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Legend:
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
Drug Name | Dosage Form | Approved Age Requirements * | Maximum Recommended Dosage * |
---|---|---|---|
Regular insulin |
| No specific age requirement reported | No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Legend:
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
Drug Name | Dosage Form | Approved Age Requirements * | Maximum Recommended Dosage * |
---|---|---|---|
Isophane insulin (NPH) |
| No specific age requirement reported | No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Legend:
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
Drug Name | Dosage Form | Approved Age Requirements * | Maximum Recommended Dosage * |
---|---|---|---|
Insulin degludec |
|
| No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Insulin detemir |
| Children greater than 2 years and adolescents | No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Insulin glargine |
| Children greater than 6 years and adolescents | No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Legend:
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
Drug Name | Dosage Form | Approved Age Requirements * | Maximum Recommended Dosage * |
---|---|---|---|
Isophane insulin (NPH) and regular insulin |
| Children and adolescents | No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs |
Legend:
- No maximum recommended dosage to exceed; insulin and other antidiabetic drugs should be adjusted to target glycemic goals and meet patients’ needs
2. Duration of Therapy
Exogenous insulin products are indicated for the management of type 1 and 2 DM and may be continued indefinitely, as blood glucose control in DM is a chronic, lifelong process. 1-9
3. Duplicative Therapy
Adjunctive administration of multiple exogenous insulin products may be required or recommended to maintain adequate glycemic control. If multiple exogenous insulin products are required or recommended, the patients generally have one long-acting or intermediate-acting basal insulin product and one short- or rapid-acting preprandial insulin product 1-38. Patient profiles containing prescriptions for multiple short-acting or multiple long-acting exogenous insulin products will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for exogenous insulin products are summarized in Table 13. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug: all insulin products
Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|
angiotensin-converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs) | adjunctive use may increase hypoglycemia risk as ACE inhibitors, ARBS improve insulin sensitivity | monitor blood glucose levels and observe for signs/symptoms of hypoglycemia | moderate (CP) |
beta blockers | combined use may increase or decrease blood glucose levels as beta blockers can alter glucose metabolism; beta blockade may also mask hypoglycemia signs/symptoms | monitor patients for signs/ symptoms of hypo- or hyperglycemia with combined therapy; measure blood glucose levels | moderate (CP) |
glucagon-like peptide-1 (GLP-1) receptor agonists | concurrent use may increase hypoglycemia risk | monitor blood glucose levels and consider insulin dose reductions or therapy modification; avoid combination of liraglutide and insulin if liraglutide is used primarily for weight loss | major (CP) |
lithium | combined use may increase risk of hypo- or hyperglycemia due to lithium varying effects on glucose metabolism | monitor blood glucose levels, especially when adding, discontinuing, modifying therapy | moderate (CP) |
metreleptin (Myalept®) | concurrent use may increase risk of hypoglycemia | use with caution and monitor blood glucose levels closely; potential large decreases in insulin dosage adjustments may be required, or consider therapy modification | moderate (CP) |
peroxisome proliferator-activated receptor (PPAR)-gamma agonists | insulin may enhance rosiglitazone, pioglitazone adverse effects (e.g., edema, heart failure); combined use may increase hypoglycemia risk | avoid combination with rosiglitazone; if insulin is combined with pioglitazone, consider dose reductions or therapy modification; monitor patients for signs/symptoms of heart failure and hypoglycemia | major (CP) |
pramlintide | concurrent use may increase hypoglycemia risk | decrease preprandial insulin dose by 50% or consider therapy modification; monitor blood glucose frequently and adjust insulin dose based on glycemic control | major (CP) |
fluoroquinolone antibiotics | concomitant use may increase risk of hypo- or hyperglycemia | monitor blood glucose levels closely and adjust insulin dose as needed; further insulin dosage adjustments may be required upon fluoroquinolone discontinuation | moderate (CP) |
somatostatin analogs | concurrent use may diminish insulin therapeutic effects as somatostatin analogs associated with hyperglycemia | monitor blood glucose levels frequently and adjust insulin dose as needed | moderate (CP) |
5. References
- Trujillo J, Yee GC, Haines S. Diabetes Mellitus. In: DiPiro JT, Yee GC, Posey L, Haines ST, Nolin TD, Ellingrod V. DiPiro J.T., & Yee G.C., & Posey L, & Haines S.T., & Nolin T.D., & Ellingrod V(Eds.),Eds. Joseph T. DiPiro, et al.eds. Pharmacotherapy: A Pathophysiologic Approach, 12e. McGraw Hill; 2023. Accessed August 28th, 2023. https://accesspharmacy-mhmedical-com.ezproxy.lib.utexas.edu/content.aspx?bookid=3097§ionid=269398080
- Samson SL, Vellanki P, Blonde L, et. al. Consensus statement by the American Association of Clinical Endocrinologists and American College of Endocrinology on the comprehensive type 2 diabetes management algorithm- 2023 update. Endocr Pract. 2023 May;29(5):305-340.
- American Diabetes Association. 9. Pharmacologic approaches to glycemic treatment. Diabetes Care. 2023;46 (Suppl 1):S140-157.
- Weinstock RS. General principles of insulin therapy in diabetes mellitus. In: UpToDate, Post TW (Ed), UpToDate, Waltham, MA. (Accessed August 28th, 2023.)
- Weinstock RS. Management of blood glucose in adults with type 1 diabetes mellitus. In: UpToDate, Post TW (Ed), UpToDate, Waltham, MA. (Accessed August 28th, 2023.)
- Levitsky LL, Misra M. Insulin therapy for children and adolescents with type 1 diabetes mellitus. In: UpToDate, Post TW (Ed), UpToDate, Waltham, MA. (Accessed August 28th, 2023.)
- Wexler JW. Insulin therapy in type 2 diabetes mellitus. In: UpToDate, Post TW (Ed), UpToDate, Waltham, MA. (Accessed August 28th, 2023.)
- American Diabetes Association. 6. Glycemic targets: Standards of medical care in diabetes – 2023. Diabetes Care. 2023;46 (Suppl 1): s97-s110.
- American Diabetes Association. 13. Older adults: Standards of medical care in diabetes – 2023. Diabetes Care. 2023;46 (Suppl 1): s216-s229.
- American Diabetes Association. 14. Children and adolescents: Standards of medical care in diabetes – 2023. Diabetes Care. 2023;46 (Suppl 1)S230-S253.
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: September 6, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2021. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed September 6, 2023.
- Insulin aspart (Fiasp®) package insert. NovoNordisk, June 2023.
- Insulin aspart (NovoLog®) package insert. Novo Nordisk, February 2023.
- Insulin glulisine (Apidra®) package insert. Sanofi-Aventis, July 2023.
- Insulin lispro (Admelog®) package insert. Sanofi-Aventis, November 2020.
- Insulin lispro (Humalog®) package insert. Eli Lilly, August 2023.
- Insulin lispro (Lyumjev®) package insert. Eli Lilly and Company, March 2023.
- Regular insulin (Afrezza®) package insert. MannKind Corporation, February 2023.
- Regular insulin (Humulin® R) package insert. Eli Lilly, January 2023.
- Regular insulin (Humulin® R Concentrated U 500) package insert. Eli Lilly,
June 2022. - Regular insulin (Novolin® R) package insert. Novo Nordisk, November 2022.
- Insulin isophane (NPH) (Humulin® N) package insert. Eli Lilly, March 2023.
- Insulin isophane (NPH) (Novolin® N) package insert. Novo Nordisk, November 2022.
- Insulin degludec (Tresiba®) package insert. Novo Nordisk, July 2022.
- Insulin detemir (Levemir®) package insert. Novo Nordisk, December 2022.
- Insulin glargine (Basaglar®, KwikPen™, Tempo Pen™) package insert. Eli Lilly, June 2023.
- Insulin glargine (Lantus®, Solostar™) package insert. Sanofi-Aventis, June 2023.
- Insulin glargine-aglr (Rezvoglar®, Kwikpen™) package insert. Eli Lilly and Company, November 2022.
- Insulin glargine-yfgn (Semglee®) package insert. Mylan Specialty LP, July 2023.
- Insulin glargine (Toujeo®, Toujeo Max®) package insert. Sanofi-Aventis, March 2023.
- Insulin aspart protamine and insulin aspart (NovoLog® Mix 70/30) package insert. Novo Nordisk, February 2023.
- Insulin isophane (NPH) and regular (Humulin® 70/30) package insert. Eli Lilly, March 2023.
- Insulin isophane (NPH) and regular (Novolin® 70/30) package insert. Novo Nordisk, November 2022.
- Insulin lispro (Humalog® Mix 50/50) package insert. Eli Lilly, July 2023.
- Insulin lispro (Humalog® Mix 75/25) package insert. Eli Lilly, July 2023.
- Insulin glargine and lixisenatide (Soliqua® 100/33) package insert. Sanofi-Aventis, June 2022.
- Insulin degludec and liraglutide (Xultophy® 100/3.6) package insert. Novo Nordisk, July 2023.
- Melillo G. FDA approves Fiasp for children with diabetes. Am J Manag Care. January 6, 2020. Available at: www.ajmc.com/view/fda-approves-fiasp-for-children-with-diabetes. Accessed September 6, 2023.
Fentanyl
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 23, 2021; May 24, 2019; May 2017; June 2015; October 2013; December 2011; January 2010
- Initially developed
- Feb. 2003
1. Dosage
1.1. Adults
Fentanyl citrate intranasal spray as well as oral transmucosal lozenges, buccal tablets, sublingual tablets, sublingual spray, and transdermal patches are FDA-approved for managing breakthrough cancer pain in patients already receiving and tolerant to opioid therapy for persistent cancer pain. Patients are considered opioid tolerant if they are taking around-the-clock opioids consisting of at least 60 mg of oral morphine daily, 25 mcg of transdermal fentanyl/hour, 30 mg of oral oxycodone daily, 8 mg of oral hydromorphone daily or an equianalgesic dose of another opioid daily for a week or longer1-11.
Because of the risk of abuse, addiction, misuse, and overdose, all intranasal and oral fentanyl dosage forms are obtained solely through a restricted distribution program, the Transmucosal Immediate Release Fentanyl (TIRF) Risk Evaluation and Management Strategy (REMS) Access program, in which only outpatients, healthcare professionals who prescribe to outpatients, pharmacies, and distributors who have registered for the program can prescribe, dispense, and/or obtain intranasal and oral fentanyl1-5, 7-11.
Due to pharmacokinetic differences between intranasal, oral transmucosal, buccal, sublingual, and transdermal fentanyl citrate formulations, these products are not interchangeable on a mcg per mcg basis and should not be substituted on a mcg for mcg basis as enhanced or attenuated pharmacologic effects could occur1-11.
1.1.1. Transmucosal Lozenges (Actiq, generic)
Patients receiving fentanyl oral transmucosal lozenges for breakthrough pain are prescribed an initial dose of 200 mcg with instructions to allow the lozenge to dissolve over 15 minutes as the product is not designed to be chewed. Until the appropriate dose is reached, patients may find it necessary to use an additional oral transmucosal unit during a single episode. Re-dosing may begin 30 minutes after the start of the previous unit. During the titration phase, no more than two units should be administered for each individual cancer breakthrough pain episode. Patients must wait at least 4 hours before administering fentanyl oral transmucosal lozenges for another episode of breakthrough pain. To limit the number of units during the titration period, patients should be prescribed a maximum supply of six 200 mcg fentanyl oral transmucosal lozenges. At each new dose of oral transmucosal lozenge required by a patient, it is recommended that no more than six units of the titration dose be prescribed. Once a successful dose is identified for a patient, the quantity of lozenges utilized by a patient should be limited to 4 or fewer units per day. If consumption increases to greater than 4 units per day, the dose of the long-acting opiate should be re-evaluated. To discontinue use of fentanyl oral transmucosal lozenges, a downward titration is recommended to minimize potential withdrawal adverse effects1, 7-15.
1.1.2. Buccal Tablets (Fentora®, generic)
Patients prescribed fentanyl buccal tablets for breakthrough pain should begin therapy with an initial dose of 100 mcg, with the exception of those previously treated with fentanyl oral transmucosal lozenges2, 7-11. Dose conversions between fentanyl oral transmucosal lozenges and buccal tablets are summarized in Table 1.
The tablet is placed in the buccal cavity (the space between the upper cheek and rear molar) or under the tongue and should be allowed to dissolve completely over a period of 30 minutes. Tablets should not be split, crushed, chewed or swallowed whole. If there are any tablet pieces remaining after 30 minutes, the patient may swallow them with a glass of water. The same dosage strength may be repeated once during a breakthrough pain episode, administered no sooner than 30 minutes after initiating buccal fentanyl tablet therapy, if pain is not relieved by the first buccal tablet dose. Patients must wait at least 4 hours before administering a fentanyl buccal tablet dose for another episode of breakthrough pain. The fentanyl buccal tablet dose should be increased in patients requiring greater than one breakthrough dose for several consecutive episodes. Patients requiring fentanyl buccal tablet doses higher than 100 mcg should be titrated in multiples of 100 mcg. Patients may receive up to four 100 mcg tablets at one time placed on each side of the mouth in each buccal cavity (2 tablets per side). Fentanyl buccal tablet dosages greater than 400 mcg should be titrated in 200 mcg increments. Doses should be titrated to achieve adequate analgesia with acceptable side effects, but no more than 4 tablets should be used concurrently for a breakthrough episode. Patients should receive only one buccal tablet dosage strength at a time to minimize confusion and the possibility of overdose. If more than four breakthrough pain episodes happen per day, the long-term opiate maintenance dose should be re-evaluated. To discontinue fentanyl buccal tablet use, a downward titration is recommended to minimize potential withdrawal adverse effects.
Table 1: Dosage Conversions for Fentanyl Oral Transmucosal Lozenges and Fentanyl Buccal Tablets
Current Fentanyl Oral Transmucosal Lozenge Dose (mcg) | Initial Fentanyl Buccal Tablet Dose (mcg) |
---|---|
200 | 100 |
400 | 100 |
600 | 200 |
900 | 200 |
1200 | 400 (supplied as 2 x 200 mcg tablets) |
1600 | 400 (supplied as 2 x 200 mcg tablets) |
1.1.3. Sublingual Tablets (Abstral®)
Patients prescribed fentanyl sublingual tablets for breakthrough pain should begin therapy with an initial 100 mcg dose, with the exception of those previously treated with fentanyl oral transmucosal lozenges. Dose conversions between fentanyl oral transmucosal lozenges and sublingual tablets are summarized in Table 2.
To administer fentanyl sublingual tablets, the unwrapped tablet should be placed on the floor of the mouth, under the tongue and allowed to dissolve completely. Fentanyl sublingual tablets should not be chewed or swallowed. Patients should be advised to not eat or drink until the tablet is dissolved. In patients with xerostomia, the mouth should be moistened before the tablet is administered. If patients do not achieve adequate analgesia within 30 minutes, a second fentanyl sublingual tablet dose may be administered as directed. No more than two doses should be administered for any breakthrough pain episode. If pain relief for the breakthrough episode is not relieved with the 100 mcg dose, titrate using multiples of 100 mcg or 200 mcg tablets until adequate analgesia is achieved. Doses may be titrated upward to 200 mcg, 300 mcg, 400 mcg, 600 mcg, or 800 mcg per dose. Doses higher than 800 mcg have not been evaluated in clinical trials. If adequate pain relief is not achieved within 30 minutes of the first dose, a second dose of the same strength may be administered. Patients should not use more than 4 tablets at one time. Patients must wait at least 2 hours before administering fentanyl sublingual tablets for another episode of breakthrough pain. Once an effective fentanyl sublingual tablet dose has been determined, patients should be maintained on this dose. If pain is not effectively managed with this dose of fentanyl sublingual tablet, a patient may use a second dose as directed by their health care provider, with no more than two doses being used to treat any breakthrough pain episode. Again, patients must wait at least two hours before treating subsequent breakthrough pain episodes. Fentanyl sublingual tablets should be used for no more than four breakthrough pain episodes per day. If more than four breakthrough pain episodes happen per day, the long-term opiate maintenance dose should be re-evaluated. To discontinue fentanyl sublingual tablet use, a downward titration is recommended to minimize potential withdrawal adverse effects3, 7-11.
Table 2: Dosage Conversions for Fentanyl Oral Transmucosal Lozenges and Fentanyl Sublingual Tablets
Current Fentanyl Oral Transmucosal Lozenge Dose (mcg) | Initial Fentanyl Sublingual Tablet Dose (mcg) |
---|---|
200 | 100 |
400 | 200 |
600 | 200 |
800 | 200 |
1200 | 200 |
1600 | 400 |
1.1.4. Sublingual Spray (Subsys®)
With the exception of patients previously treated with fentanyl transmucosal lozenges, treatment with fentanyl sublingual spray should be initiated with a 100 mcg dose. If patients do not achieve adequate analgesia within 30 minutes, a second fentanyl sublingual spray dose of the same strength may be administered. No more than two doses should be administered for any breakthrough pain episode. Patients must wait at least 4 hours before administering fentanyl sublingual spray for another episode of breakthrough pain. Patients should be prescribed only a titration supply of 100 mcg dose units during titration to minimize the number of available units during titration. If pain relief for the breakthrough episode is not relieved with the 100 mcg dose, titrate doses upward to 200 mcg, 400 mcg, 600 mcg, 800 mcg, 1200 mcg, or 1600 mcg per dose. Patients previously treated with fentanyl transmucosal lozenges should receive a modified initial sublingual spray dose, based on the transmucosal lozenge dose that had previously been utilized. Dosage conversions between fentanyl transmucosal lozenges and sublingual spray are summarized in Table 3.
Once an effective fentanyl sublingual spray dose has been determined, patients should be maintained on this dose. If pain is not effectively managed with this dose of fentanyl sublingual spray, a patient may use a second dose as directed by their health care provider, with no more than two doses being used to treat any breakthrough pain episode. Again, patients must wait at least four hours before treating subsequent breakthrough pain episodes. Increase the fentanyl sublingual spray dose only when treatment at the current dose fails to provide pain relief for several episodes. To reduce the risk of overdose, patients should have only one fentanyl sublingual spray dosage strength available at any time. If more than four breakthrough pain episodes happen per day, the long-term opiate maintenance dose should be re-evaluated. In patients with Grade 1 mucositis, fentanyl sublingual spray may result in higher drug serum concentrations. For patients with Grade 2 mucositis, avoid sublingual fentanyl use unless the benefits outweigh the risks of increased drug exposure4, 7-11.
Table 3: Dosage Conversions for Fentanyl Oral Transmucosal Lozenges and Fentanyl Sublingual Spray
Current Fentanyl Oral Transmucosal Lozenge Dose (mcg) | Initial Fentanyl Sublingual Spray Dose (mcg) |
---|---|
200 | 100 |
400 | 100 |
600 | 200 |
800 | 200 |
1200 | 400 |
1600 | 400 |
1.1.5. Intranasal Spray (Lazanda®)
Fentanyl intranasal spray should be initiated in all patients with a dose of 100 mcg (one spray in one nostril). If adequate analgesia is achieved, this dose will be used to manage future breakthrough pain episodes. If adequate pain relief is not achieved with the 100 mcg dose, titrate the dose upward in a stepwise manner to 200 mcg (2 x 100 mcg – one spray in each nostril), 400 mcg (4 x 100 mg – two sprays in each nostril or 1 x 400 mcg – one spray in one nostril), or 800 mcg (2 x 400 mcg – one spray in each nostril) per dose until adequate analgesia is achieved with minimal adverse effects. Patients must wait at least 2 hours before administering subsequent fentanyl intranasal spray doses. Safety and efficacy of doses greater than 800 mcg have not yet been determined in clinical trials. Once an effective dose has been established, fentanyl intranasal spray should be used to manage no more than four breakthrough episodes per day. If adequate analgesia is not achieved within 30 minutes of a fentanyl intranasal spray dose or a breakthrough pain episode occurs before the next fentanyl intranasal spray dose (i.e., within 2 hours of a fentanyl intranasal spray dose), a rescue medication may be utilized as dictated by the patient’s health care provider. If more than four breakthrough pain episodes happen per day, long-term opiate maintenance doses should be re-evaluated. To discontinue fentanyl intranasal spray use, a downward titration is recommended to minimize potential withdrawal adverse effects5, 7-11.
1.1.6. Transdermal Patch (Duragesic®, generics)
To initiate fentanyl transdermal patch therapy in patients prescribed other opioids, discontinue all other around-the-clock opioid therapy. Short-acting opioid agonists may be used as needed for the first 24 hours after initial application. Breakthrough pain may require supplemental doses even after a transdermal dose is established. Conversion doses from an oral or parenteral fentanyl preparation to fentanyl transdermal patches is summarized in Table 46-11. Conversion doses from daily oral morphine dosages to fentanyl transdermal patches is provided in Table 56-11. This table does NOT represent equianalgesic doses and is only intended to provide dosage conversions from other opioids to fentanyl transdermal patches, but does NOT provide dosage conversions from fentanyl transdermal patches to other fentanyl/opioid dosage forms as the new opioid dose would be overestimated and may potentially result in a fatal drug overdose.
Patients requiring fentanyl transdermal patch therapy and taking an opiate not listed in Table 4 should calculate the previous 24-hour analgesic requirement and convert the quantity to an equianalgesic oral morphine dose and use Table 4 or an additional dosage conversion chart such as the “Table 2. Morphine Milligram Equivalent (MME) Doses for Commonly Prescribed Opioids” table provided in the “CDC Guideline for Prescribing Opioids for Chronic Pain- United States, 2016” to identify an appropriate transdermal fentanyl patch conversion dose. The fentanyl transdermal patch dose should be titrated to a dose that provides adequate analgesia and minimal adverse reactions. The patch should be changed every 72 hours. If adequate analgesia is not achieved, the initial dose can be titrated after three days; subsequent dosage titrations should not be made more frequently than every six days. In the event that breakthrough pain occurs, a dosage adjustment may be necessary as well as rescue medication administration with an immediate-release analgesic. A small percentage of adult patients may not have adequate pain control with an every 72 hour dosage scheme and may require an every 48 hour dosing regimen. The patch should be applied to non-irritated, non-irradiated skin on a flat surface; avoid exposing the patch to external heat sources6, 7-11.
Table 4: Opioid Dosage Conversion to Fentanyl Transdermal Patch
Current Analgesic | Daily Dosages (mg/day) |
---|---|
Oral morphine |
|
Intravenous or intramuscular morphine |
|
Oral oxycodone |
|
Oral codeine |
|
Oral hydromorphone |
|
Intravenous hydromorphone |
|
Intramuscular meperidine |
|
Oral methadone |
|
Recommended fentanyl transdermal patch dose |
|
Table 5: Recommended Initial Fentanyl Transdermal Patch Dose Based Upon Daily Oral Morphine Dose
Oral Daily Morphine (mg/day) | Fentanyl Transdermal Patch Dose (mcg/hour) |
---|---|
60-134 | 25 |
135-224 | 50 |
225-314 | 75 |
315-404 | 100 |
405-494 | 125 |
495-584 | 150 |
585-674 | 175 |
675-764 | 200 |
765-854 | 225 |
855-944 | 250 |
945-1034 | 275 |
1035-1124 | 300 |
1.1.7. Off-Label Uses
Although not FDA-approved, a few small studies have evaluated oral transmucosal fentanyl lozenge use for migraine headache pain management refractory to conventional treatment in patients with a history of parenteral opioid use in the Emergency Department (ED). These studies found the drug to be effective in reducing pain intensity scores and number of ED visits. Additional outpatient off-label use has been investigated in opioid-naïve patients with cancer, moderate to severe osteoarthritis with an inadequate response to weak opioid analgesic therapy, and pain associated with sickle cell anemia. The use of fentanyl patches in opioid-naïve patients with cancer is contraindicated, but two studies demonstrated successful use in this patient population. Short-term treatment with transdermal fentanyl significantly improved pain and functionality in patients with moderate to severe pain due to knee or hip osteoarthritis in two trials. However, opioid medications are conditionally recommended against for use in patients with osteoarthritis of the knee, hand, or hip while recognizing use may be appropriate when alternative options have failed. Current recommendations for the management of pain in sickle cell disease recommend against the use of chronic opioid therapy (COT) in children and adults unless the pain is refractory to multiple other therapies. Shared decision making should be used to determine the continuation of COT in patients who are well functioning and receiving a perceived benefit in therapy. Continuation of COT is not recommended in patients who are functioning poorly or are at high risk for opioid abuse or toxicity7, 17-19.
1.1.8. Dosage Limits
The lowest effective fentanyl transmucosal, buccal, intranasal, or sublingual dose should be administered to patients with renal or hepatic dysfunction, as well as those patients receiving concurrent CYP3A4 inhibitor drugs.
Patient profiles containing prescriptions for greater than 6 units of fentanyl oral transmucosal lozenges during a transition phase will be reviewed. Patient profiles containing prescriptions for more than one strength of buccal, nasal, sublingual, or transmucosal fentanyl concurrently for greater than two months will be reviewed. Patient profiles containing prescriptions for greater than four doses per day of fentanyl intranasal spray or fentanyl sublingual tablets will be reviewed. Patient profiles documenting treatment of more than 4 breakthrough episodes daily with fentanyl buccal, transmucosal, or sublingual dosage forms will be reviewed (see Table 61-11)1-5, 7-11.
Table 6: Adult Maximum Oral/Intranasal/Transdermal Fentanyl Dosages
Fentanyl Dosage Form | Dosage Strengths | Maximum Dose |
---|---|---|
buccal tablet (Fentora®, generic) | 100 mcg, 200 mcg, 400 mcg, 600 mcg, or 800 mcg per tablet | 800 mcg/dose; no more than 4 tablets at one time per breakthrough episode, and no more than 2 doses per breakthrough pain episode; if more than 4 breakthrough episodes per 24 hours occur once maintenance dose determined, long-acting opioid dose should be re-evaluated |
intranasal spray (Lazanda®) | 100 mcg, 300 mcg, or 400 mcg per actuation | 800 mcg/dose; if more than 4 breakthrough episodes per 24 hours occur once maintenance dose determined, long-acting opioid dose should be re-evaluated |
sublingual tablet (Abstral®) | 100 mcg, 200 mcg, 300 mcg, 400 mcg, 600 mcg, or 800 mcg per tablet | 800 mcg/dose; no more than 4 tablets at one time per breakthrough episode, and no more than 2 doses per breakthrough pain episode; if more than 4 breakthrough episodes per 24 hours occur once maintenance dose determined, long-acting opioid dose should be re-evaluated |
sublingual spray (Subsys®) | 100 mcg, 200 mcg, 400 mcg, 600 mcg, 800 mcg, 1200 mcg, or 1600 mcg per spray | 1600 mcg/dose; no more than 2 doses per breakthrough pain episode; if more than 4 breakthrough episodes per 24 hours occur once maintenance dose determined, long-acting opioid dose should be re-evaluated |
transmucosal lozenge (Actiq®, generic) | 200 mcg, 400 mcg, 600 mcg, 800 mcg, 1200 mcg, or 1600 mcg per lozenge | no more than 2 units/lozenges per breakthrough pain episode; no more than 4 lozenge units/day; if more than 4 breakthrough episodes per 24 hours occur once maintenance dose determined, long-acting opioid dose should be re-evaluated |
transdermal patch (Duragesic®, generic) | 12 mcg/hr, 25 mcg/hr, 37.5 mcg/hr, 50 mcg/hr, 75 mcg/hr, 100 mcg/hr | maximum dose not identified; dosages titrated every 3 days after initial dose, then every 6 days thereafter; most patients controlled with every 72 hour administration; a small percentage require every 48 hour administration |
1.2. Pediatrics
Fentanyl citrate transmucosal lozenges are FDA-approved for use in adolescents 16 years and older. Fentanyl transdermal patch is FDA-approved for use to manage chronic severe pain in opioid-tolerant pediatric patients 2 years of age and older requiring around-the-clock opiate therapy. Fentanyl nasal spray as well as oral fentanyl buccal tablet, sublingual spray, and sublingual tablet safety and efficacy have not been established in patients below 18 years of age. Pediatric fentanyl maximum dosage recommendations are summarized in Table 71-11.
Although not FDA-approved, oral fentanyl citrate has been studied in non-opioid tolerant patients as young as 2 years of age for various indications including surgical procedure pain, wound dressing changes in burn patients, and sedation in single doses ranging from 10-20 mcg/kg given prior to procedures with mixed efficacy rates. Similarly, intranasal fentanyl has been effectively utilized in pediatric patients as young as 6 months of age for non-FDA approved uses (e.g., analgesia, burns, postoperatively) at doses of 1-2 mcg/kg with success20-29.
Table 7: Pediatric Maximum Transmucosal/Transdermal Fentanyl Dosages
Fentanyl Dosage Form | Dosage Strengths | Maximum Dose |
---|---|---|
transmucosal lozenge (Actiq®, generic) | 200 mcg, 400 mcg, 600 mcg, 800 mcg, 1200 mcg, or 1600 mcg per lozenge | 16 years and older: no more than 2 units/lozenges per breakthrough pain episode; no more than 4 lozenge units/day; if more than 4 breakthrough episodes per 24 hours occur once maintenance dose determined, long-acting opioid dose should be re-evaluated |
transdermal patch (Duragesic®, generic) | 12 mcg/hr, 25 mcg/hr, 37.5 mcg/hr, 50 mcg/hr, 75 mcg/hr, 100 mcg/hr | 2 years and older: maximum dose not identified; dosages titrated every 3 days after initial dose, then every 6 days thereafter |
1.3. Opioid Reversal Agents
Naloxone is an opioid receptor antagonist that is FDA approved for reversal of opioid-induced respiratory and central nervous system depression. Naloxone is supplied as a nasal spray marketed as Narcan® 4 mg/0.1 mL nasal spray, Kloxxado® 8 mg/ 0.1 mL nasal spray, Evzio® 0.4 mg/ 0.4 mL auto-injector solution for injection, LifEMS Naloxone® 2 mg/2 mL solution for injection, and generic formulations of the solution for injection are available.
In July of 2020 the U.S. Food and Drug Administration made the recommendations that healthcare professionals should discuss the availability of naloxone products and consider prescribing naloxone to patients who are prescribed opioid pain relievers and are at increased risk of opioid overdose. Patients at risk of opioid overdose include patients who are co-prescribed benzodiazepines or other drugs that depress the central nervous system, patients with a history of opioid use disorder (OUD), or who have experienced a previous opioid overdose. Healthcare professionals should also consider prescribing naloxone to patients who have other household members, including children, or other close contacts at risk for accidental ingestion or opioid overdose. In 2016, the state of Texas, in association with the Texas Pharmacy Association, obtained a physician-signed standing order that allows pharmacists to dispense naloxone products to patients after completing Texas-accredited training. This allows for the sale and possession of naloxone products without a prescription in the state of Texas30-35.
2. Duration of Therapy
Therapy duration for fentanyl oral transmucosal lozenges, fentanyl buccal tablets, fentanyl sublingual tablets, fentanyl sublingual spray, fentanyl nasal spray, and fentanyl transdermal patches is limited to the need for pain management in patients with cancer already receiving opioids and tolerant to opioid therapy1-11.
3. Duplicative Therapy
Concurrent therapy with fentanyl oral transmucosal lozenges, buccal tablets, sublingual tablets, sublingual spray, or nasal spray and other forms of fentanyl as well as other CNS depressants should be prescribed cautiously, if at all. If concurrent therapy is necessary, patients should be monitored for signs of respiratory depression as well as excessive sedation1-11.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for fentanyl are summarized in Table 8. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed1-11, 36.
Table 8: Fentanyl Drug-Drug Interactions
Interacting Drug | Interaction | Recommendation | Clinical Significance Level# |
---|---|---|---|
amiodarone | concurrent use may result in cardiac toxicity (e.g., bradycardia, low cardiac output) and increased risk of fentanyl toxicity (e.g., respiratory and CNS depression) as amiodarone inhibits CYP3A4 | if combination utilized, monitor patients closely for enhanced pharmacologic/toxic effects | major (DrugReax) 3-moderate (CP) |
CNS depressants (e.g., skeletal muscle relaxants, haloperidol, other opioids) | potential for additive CNS effects, including respiratory depression, excessive sedation or coma | use cautiously together; modify fentanyl doses as necessary and observe patients for enhanced CNS adverse effects | major (DrugReax) 2-major (CP) |
CYP3A4 inducers (e.g., rifampin, barbiturates, carbamazepine, phenytoin, aprepitant, efavirenz) | may increase fentanyl clearance and reduce fentanyl systemic concentrations leading to decrease effectiveness as fentanyl is a CYP3A4 substrate | monitor fentanyl efficacy in patients prescribed CYP3A4 inducers concurrently; adjust doses as necessary when CYP3A4 inducer added, deleted, or changed to therapeutic regimen | moderate (DrugReax) 2-major, 3-moderate (CP) |
CYP3A4 inhibitors (e.g., aprepitant, protease inhibitors, macrolides, azole antifungals, efavirenz) | may decrease fentanyl clearance and increase fentanyl systemic concentrations leading to potential for enhanced pharmacologic/toxic effects as fentanyl is a CYP3A4 substrate | monitor for enhanced fentanyl pharmacologic/toxic effects and adjust doses as necessary | strong inhibitors - contraindicated, inhibitors - major (DrugReax) 2-major, 3-moderate (CP) |
MAOIs (e.g., phenelzine, procarbazine, linezolid) | concurrent administration may potentiate severe, unpredictable opioid effects including CNS depression and hypotension | fentanyl should not be prescribed during or within 14 days of MAOI administration | major (DrugReax) 2-major (CP) |
mifepristone | adjunctive administration may result in increased fentanyl serum levels and the potential for enhanced pharmacologic/ serious adverse effects as fentanyl is a CYP3A4 substrate and mifepristone is a CYP3A4 inhibitor | avoid concurrent administration | contraindicated (DrugReax) 1-severe (CP) |
nasal decongestants (e.g., oxymetazoline) and intranasal fentanyl | combined administration of intranasal fentanyl with vasoconstrictive nasal decongestants results in reduced fentanyl absorption through the nasal mucosa, reduced Cmax and delayed Tmax, and the potential for reduced effectiveness in pain management | use combination cautiously; avoid intranasal fentanyl dose titration in patients using vasoconstrictive decongestants as inappropriate maintenance dose may be calculated; interaction does not occur with other fentanyl dosage forms | 2-major (CP) |
opioid antagonists (e.g., naloxone, naltrexone) | may precipitate withdrawal symptoms and/or decrease fentanyl effectiveness | use with caution only when necessary and monitor for signs of fentanyl withdrawal/loss of efficacy | naltrexone: contraindicated (DrugReax) 2-major (CP) |
serotonergic agents (e.g., selective serotonin reuptake inhibitors and serotonin-norepinephrine reuptake inhibitors) | concurrent use increases risk for serotonin syndrome or neuroleptic malignant syndrome-like reactions as both agents have serotonergic properties | administer cautiously together; observe for signs/symptoms of serotonin syndrome (e.g., agitation, confusion, hyperthermia, shivering) | major (DrugReax) 2-major (CP) |
Legend:
- #CP = Clinical Pharmacology
- CNS = central nervous system
- Cmax = maximum serum concentration
- CYP = cytochrome P450
- MAOIs = monoamine oxidase inhibitors
- Tmax = time when maximum serum concentration is reached
5. References
- Fentanyl citrate oral transmucosal lozenge (Actiq®) package insert. Cephalon, Inc. March 2021.
- Fentanyl buccal tablet (Fentora®) package insert. Cephalon, Inc. March 2021.
- Fentanyl sublingual tablets (Abstral®) package insert. Sentynl Therapeutics, Inc., December 2019.
- Fentanyl sublingual spray (Subsys®) package insert. Insys Therapeutics, Inc., May 2021.
- Fentanyl nasal spray (Lazanda®) package insert. West Therapeutic Development, LLC, March 2021.
- Fentanyl transdermal system (Duragesic®) package insert. Janssen Pharmaceuticals, Inc., July 2021.
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed November 18, 2021.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2021. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed November 18, 2021.
- Facts and Comparisons eAnswers [database online]. Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2021. Available at: https://fco-factsandcomparisons-com.ezproxy.lib.utexas.edu. Accessed November 18, 2021.
- American Society of Health-System Pharmacists. 2021. AHFS Drug Information® - 2021st Ed. Bethesda, MD. American Society of Health-System Pharmacists®. STAT!Ref Online Electronic Medical Library. Available at: https://online.statref.com/document/cQfe8yqMRNqgSGqm4Qo8Qj. Accessed November 18, 2021.
- Lexicomp Online, Lexi-Drugs Online, Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2021; November 18, 2021.
- Christie JM, Simmonds M, Patt R, et al. Dose-titration, multicenter study of oral transmucosal fentanyl citrate for the treatment of breakthrough pain in cancer patients using transdermal fentanyl for persistent pain. J Clin Oncol. 1998;16:3238-45.
- Mystakidou K, Katsouda E, Parpa E, Tsiatas ML, Vlahos L. Oral transmucosal fentanyl citrate for the treatment of breakthrough pain in cancer patients: an overview of its pharmacological and clinical characteristics. Am J Hosp Palliat Care. 2005;22:228-32.
- Coluzzi PH, Schwartzberg L, Conroy JD, et al. Breakthrough cancer pain: a randomized trial comparing oral transmucosal fentanyl citrate (OTFC) and morphine sulfate immediate release (MSIR). Pain. 2001;91:123-30.
- Burton AW, Drive LC, Mendoza TR, Syed G. Oral transmucosal fentanyl citrate in the outpatient management of severe cancer pain crises. A retrospective case series. Clin J Pain. 2004;20:195-7.
- CDC guideline for prescribing opioids for chronic pain — united states, 2016. MMWR Recomm Rep. 2016;65.
- Oral transmucosal fentanyl citrate used to reduce emergency department visits in migraine patients: a prospective open label trial. [abstract]. Pain Medicine. 2003:4:104. Abstract no. 536
- Landy SH. Oral transmucosal fentanyl citrate for the treatment of migraine headache pain in outpatients: a case series. Headache. 2004;44:762-6.
- Brandow AM, Carroll CP, Creary S, et al. American Society of Hematology 2020 guidelines for sickle cell disease: management of acute and chronic pain. Blood Adv. 2020;4(12):2656-2701.
- Binstock W, Rubin R, Bachman C, et al. The effect of premedication with OTFC, with or without ondansetron, on postoperative agitation and nausea and vomiting in pediatric ambulatory patients. Paediatr Anaesth. 2004;14:759-67.
- Dsida RM, Wheeler M, Birmingham PK, et al. Premedication of pediatric tonsillectomy patients with oral transmucosal fentanyl citrate. Anesth Analg. 1998;86:66-70.
- Epstein RH, Mendel HG, Witkowski TA, et al. The safety and efficacy of oral transmucosal fentanyl citrate for preoperative sedation in young children. Anesth Analg. 1996;83:1200-5.
- Howell, TK, Smith S, Rushman SC, et al. A comparison of oral transmucosal fentanyl and oral midazolam for premedication in children. Anaesthesia. 2002;57:798-805.
- Mahar PJ, Rana JA, Kennedy CS, et al. A randomized clinical trial of oral transmucosal fentanyl citrate versus intravenous morphine sulfate for initial control of pain in children with extremity injuries. Pediatr Emerg Care. 2007;23:544-8.
- Robert R, Brack A, Blakeney P, et al. A double-blind study of the analgesic efficacy of oral transmucosal fentanyl citrate and oral morphine in pediatric patients undergoing burn dressing change and tubbing. J Burn Care Rehabil. 2003;24:351-355.
- Schechter NL, Weisman SJ, Rosenblum M, et al. The use of oral transmucosal fentanyl citrate for painful procedures in children. Pediatrics. 1995;95:335-9.
- Sharar SR, Bratton SL, Carrougher GJ, et al. A comparison of transmucosal fentanyl citrate and oral hydromorphone for inpatient pediatric burn wound care analgesia. J Burn Care Rehabil. 1998;19:516-21.
- Sharar SR, Carrougher GJ, Selzer K, et al. A comparison of oral transmucosal fentanyl citrate and oral oxycodone for pediatric outpatient wound care. J Burn Care Rehabil. 2002;23:27-31.
- Mudd S. Intranasal fentanyl for pain management in children: a systematic review of the literature. J Pediatr Health Care. 2011;25:316-322.
- Naloxone hydrochloride (Narcan®) 4 mg/ 0.1 mL nasal spray package insert. Emergent Devices Inc., March 25, 2021.
- Naloxone hydrochloride (Kloxxado®) 8 mg/ 0.1 mL nasal spray package insert. Hikma Specialty USA Inc., April 2021.
- Naloxone hydrochloride (Evzio®) 0.4 mg/ 0.4 mL pre-filled syringe autoinjector package insert. HF Acquisition Co LLC, DBA HealthFirst, February 2020.
- Naloxone hydrochloride (LifEMS®) 2 mg/ 2 mL solution for injection convenience kit package insert. Lifsa Drugs LLC, November 2020.
- U.S. Food and Drug Administration. FDA recommends health care professionals discuss naloxone with all patients when prescribing opioid pain relievers or medicines to treat opioid use disorder. FDA Drug Safety Communication. Published online July 23, 2020. Available at: https://www.fda.gov/drugs/drug-safety-and-availability/fda-recommends-health-care-professionals-discuss-naloxone-all-patients-when-prescribing-opioid-pain. Accessed November 19th, 2021.
- Texas Pharmacy Association. Texas pharmacist naloxone standing order application. October 2016. Available at: https://www.texaspharmacy.org/page/TXPHARMNALOX. Accessed November 19th, 2021.
- Turkel SB, Nadala JGB, Wincor MZ. Possible serotonin syndrome in association with 5-HT3 antagonist agents. Psychosomatics. 2001;42:258-260.
Fluoroquinolones (oral)
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Vendor Drug Program formulary coverage.
- Revision history
- July 2022, June 2020; May 2018; Nov. 2015; Feb. 2014; June 2012; Oct. 2010; Sept. 2007; May 2007; Sept. 2006; Aug. 2006; Aug. 2003; Sept. 2002; Sept. 2001; Aug. 2000; Nov. 1999; Oct. 1999; Sept. 1999; Sept. 1998; Sept. 1997.
- Initially developed
- Oct. 1996
1. Dosage
1.1. Adults
Maximum recommended adult daily doses for fluoroquinolones are summarized in Table 1. Prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
ciprofloxacin (Cipro®, generics) | immediate-release (IR)#: 100 mg, 250 mg, 500 mg, 750 mg tablets; 250 mg/5 mL, 500 mg/5 mL suspension | acute sinusitis | 500 mg twice daily |
bone and joint infections | 750 mg twice daily | ||
chronic bacterial prostatitis | 500 mg twice daily | ||
complicated intra-abdominal infections (in combination with metronidazole) | 500 mg twice daily | ||
complicated, uncomplicated skin/skin structure infections | 750 mg twice daily | ||
infectious diarrhea | 500 mg twice daily | ||
inhalational anthrax (post-exposure) | 500 mg twice daily | ||
lower respiratory tract infections | 750 mg twice daily | ||
moderate, complicated urinary tract infection (UTI) | 500 mg twice daily | ||
plague | 1500 mg/day | ||
typhoid fever | 500 mg twice daily | ||
uncomplicated cervical, urethral gonococcal infections* | 250 mg as single dose | ||
Uncomplicated UTI | 250 mg twice daily | ||
ciprofloxacin (Cipro® XR, generics) | extended-release (ER)#: 500 mg, 1000 mg tablets | acute uncomplicated pyelonephritis | 1000 mg/day |
complicated UTI | 1000 mg/day | ||
uncomplicated UTI | 500 mg/day | ||
delafloxacin (Baxdela®) | 450 mg tablets | acute bacterial skin/skin structure infections | 450 mg twice daily |
community acquired bacterial pneumonia (CABP) | 450 mg twice daily | ||
gemifloxacin (Factive®) | 320 mg tablets | chronic bronchitis (acute bacterial exacerbation) | 320 mg daily |
Community acquired pneumonia (CAP) | 320 mg daily | ||
levofloxacin (Levaquin®, generics) | 250 mg, 500 mg, 750 mg tablets, 25 mg/mL solution | acute bacterial sinusitis | 750 mg once daily |
acute pyelonephritis | 750 mg once daily | ||
chronic bacterial prostatitis | 500 mg once daily | ||
chronic bronchitis (acute bacterial exacerbation) | 500 mg once daily | ||
CAP | 750 mg once daily | ||
complicated skin/skin structure infections | 750 mg once daily | ||
inhalational anthrax | 500 mg once daily | ||
mild/moderate complicated UTI | 750 mg once daily | ||
nosocomial pneumonia | 750 mg/day | ||
plague or plague prophylaxis | 500 mg once daily | ||
uncomplicated skin/skin structure infections | 500 mg once daily | ||
uncomplicated UTI | 250 mg once daily | ||
moxifloxacin (Avelox®, generics) | 400 mg tablets | acute bacterial sinusitis | 400 mg once/day |
chronic bronchitis (acute bacterial exacerbation) | 400 mg once/day | ||
CAP | 400 mg once/day | ||
complicated intra-abdominal infections | 400 mg once/day | ||
complicated skin/skin structure infections | 400 mg once/day | ||
plague or plague prophylaxis | 400 mg once/day | ||
uncomplicated skin/skin structure infections | 400 mg once/day | ||
ofloxacin (generics) | 200 mg, 300 mg, 400 mg tablets | acute pelvic inflammatory disease (PID)^ | 400 mg twice daily |
acute, uncomplicated urethral, cervical gonorrhea* | 400 mg as single dose | ||
chronic bronchitis (acute bacterial exacerbation) | 400 mg twice daily | ||
CAP | 400 mg twice daily | ||
complicated UTI | 200 mg twice daily | ||
mixed infection of urethra, cervix due to C. trachomatis and N. gonorrhoeae* | 300 mg twice daily | ||
nongonococcal cervicitis/urethritis due to Chlamydia trachomatis | 300 mg twice daily | ||
prostatitis due to E. coli | 300 mg twice daily | ||
uncomplicated cystitis due to E. coli or K. pneumoniae | 200 mg twice daily | ||
uncomplicated cystitis due to other organisms | 200 mg twice daily | ||
uncomplicated skin and skin structure infections | 400 mg twice daily |
Legend:
- # ciprofloxacin immediate-release and extended-release tablets are not interchangeable
- * CDC no longer recommends fluoroquinolones for treatment of infections due to N. gonorrhoeae
- ^ CDC no longer recommends fluoroquinolones for treating PID; may be considered in combination with metronidazole if parenteral therapy not feasible
1.2. Pediatrics
Fluoroquinolones are not drugs of choice in pediatric patients due to an increased incidence of musculoskeletal adverse reactions, including arthralgias and events related to surrounding joints and tissues10. However, ciprofloxacin and levofloxacin have been evaluated for use in pediatric patients and are FDA-approved for use in select circumstances. Recommended dosage guidelines for fluoroquinolones in pediatric patients are summarized in Table 2.
Drug Name | Treatment Indication | Maximum Recommended Dosage |
---|---|---|
ciprofloxacin | complicated urinary tract infection (UTI) or pyelonephritis | 10-20 mg/kg orally every 12 hours (not to exceed 750 mg/dose) |
inhalational anthrax (postexposure prophylaxis) | 15 mg/kg orally every 12 hours (not to exceed 500 mg/dose) | |
plague | 15 mg/kg orally every 8-12 hours (not to exceed 500 mg/dose) | |
levofloxacin | inhalational anthrax (postexposure prophylaxis) |
Greater than or equal to 6 months of age and less than 50 kg: 8 mg/kg orally every 12 hours (not to exceed 250 mg/dose) Greater than or equal to 6 months of age and greater than 50 kg: 500 mg orally once daily |
plague |
Greater than or equal to 6 months of age and less than 50 kg: 8 mg/kg orally every 12 hours (not to exceed 250 mg/dose) Greater than or equal to 6 months of age and greater than 50 kg: 500 mg orally once daily |
2. Duration of Therapy
Therapy duration for antibiotics like fluoroquinolones is based on the type and severity of infection. Recommendations for usual or documented therapy durations for adults are summarized in Table 3. However, severe or complicated infections may require prolonged therapy.
Drug Name | Treatment Indication | Maximum Therapy Duration |
---|---|---|
ciprofloxacin, IR | acute sinusitis | 10 days |
bone and joint infections | 4 to 8 weeks | |
chronic bacterial prostatitis | 28 days | |
complicated intra-abdominal infections (in combination with metronidazole) | 7 to 14 days | |
complicated, uncomplicated skin/skin structure infections | 7 to 14 days | |
infectious diarrhea | 5 to 7 days | |
inhalational anthrax (post-exposure) | 60 days | |
lower respiratory tract infections | 7 to 14 days | |
ciprofloxacin, IR or ER | moderate, complicated UTI | 7 to 14 days |
Ciprofloxacin, IR | typhoid fever | 10 days |
uncomplicated cervical, urethral gonococcal infections* | single dose | |
ciprofloxacin, IR or ER | uncomplicated UTI | 3 days |
delafloxacin | acute bacterial skin/skin structure infections | 5-14 days |
community acquired bacterial pneumonia (CABP) | 5-10 days | |
gemifloxacin | chronic bronchitis (acute bacterial exacerbation) | 5 days |
CAP | 5 to 7 days | |
levofloxacin | acute bacterial sinusitis | 10 to 14 days (500 mg dose); 5 days (750 mg dose) |
acute pyelonephritis | 10 days (250 mg dose); 5 days (750 mg dose) | |
chronic bacterial prostatitis | 28 days | |
chronic bronchitis (acute bacterial exacerbation) | 7 days | |
CAP | 7 to 14 days (500 mg dose); 5 days (750 mg dose) | |
complicated skin/skin structure infections | 7 to 14 days (750 mg dose) | |
inhalational anthrax | 60 days+ | |
mild/moderate complicated UTI | 10 days (250 mg dose); 5 days (750 mg dose) | |
hospital acquired pneumonia | 7 to 14 days | |
plague or plague prophylaxis | 10 to 14 days (500 mg dose; 750 mg dose considered if clinically warranted) | |
uncomplicated skin/skin structure infections | 7 to 10 days (500 mg dose) | |
uncomplicated UTI | 3 days (250 mg dose) | |
moxifloxacin | acute bacterial sinusitis | 10 days (5 to 7 days IDSA guidelines) |
chronic bronchitis (acute bacterial exacerbation) | 5 days | |
CAP | 7 to 14 days | |
complicated intra-abdominal infections | 5 to 14 days | |
complicated skin/skin structure infections | 7 to 21 days | |
plague or plague prophylaxis | 10 to 14 days | |
uncomplicated skin/skin structure infections | 7 days | |
ofloxacin | acute pelvic inflammatory disease (PID) | 10 to 14 days^ |
acute, uncomplicated urethral, cervical gonorrhea* | (400 mg dose) 1 day | |
chronic bronchitis (acute bacterial exacerbation) | 10 days | |
CAP | 10 days | |
complicated UTI | 10 days | |
mixed infection of urethra, cervix due to C. trachomatis and N. gonorrhoeae* | 7 days | |
nongonococcal cervicitis/urethritis due to Chlamydia trachomatis | 7 days | |
prostatitis due to E. coli | 6 weeks | |
uncomplicated cystitis due to E. coli or K. pneumoniae | 3 days | |
uncomplicated cystitis due to other organisms | 7 days | |
uncomplicated skin and skin structure infections | 10 days |
Legend:
- +Levofloxacin safety greater than 28 days in adults and greater than 14 days in pediatric patients to manage anthrax has not been studied; use for greater than 28 days in adults and greater than 14 days in pediatrics when benefits outweigh risks
- * CDC no longer recommends fluoroquinolones for treatment of infections due to N. gonorrhoeae
- ^CDC no longer recommends fluoroquinolones for treating PID; may be considered in combination with metronidazole if parenteral therapy not feasible
Fluoroquinolone therapy duration in pediatric patients is summarized in Table 4.
Drug Name |
Treatment Indication | Maximum Therapy Duration |
---|---|---|
ciprofloxacin | UTI, pyelonephritis | 10 to 21 days |
inhalational anthrax (postexposure prophylaxis) | 60 days | |
plague | 14 days | |
levofloxacin | inhalational anthrax (postexposure prophylaxis) | 60 days+ |
plague | 10 to 14 days |
Legend:
- UTI = urinary tract infection
- +Levofloxacin safety when used for longer than 14 days in pediatric patients has not been studied; use for greater than 14 days when benefit outweighs risk
3. Duplicative Therapy
The adjunctive use of two or more fluoroquinolones is not recommended. Additional therapeutic benefit is not realized when fluoroquinolones are administered in combination. Patient profiles containing concurrent prescriptions for multiple fluoroquinolones will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for oral fluoroquinolones are summarized in Table 5. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level# |
---|---|---|---|---|
ciprofloxacin | drugs metabolized by CYP1A2 (e.g., alosetron, caffeine, clozapine, duloxetine, mexiletine, ropinirole, tizanidine) | concurrent administration ciprofloxacin, a known CYP1A2 inhibitor, with drugs metabolized by CYP1A2 may result in increased serum levels of drugs metabolized by CYP1A2 and potentially increased pharmacologic/adverse effects | if combination necessary, monitor for increased adverse effects; alternative FQ that does not affect CYP1A2 enzymes may be considered | contraindicated, major, moderate (DrugReax) 2-major, 3-moderate (CP) |
ciprofloxacin | methotrexate | co-administration may result in reduced methotrexate renal tubular transport and potential for increased methotrexate levels and increased pharmacologic/adverse effects | measure methotrexate concentrations and observe patients for increased adverse effects | moderate (DrugReax) 3-moderate (CP) |
ciprofloxacin | mycophenolate | concurrent administration may decrease mycophenolic acid concentrations | monitor response to therapy when ciprofloxacin is started or stopped | moderate (DrugReax) 3-moderate (CP) |
ciprofloxacin | phenytoin | concurrent use may result in increased or decreased phenytoin concentrations ; mechanism unknown | measure phenytoin concentrations and observe patients for increased or decreased pharmacologic effects | moderate (DrugReax) 3-moderate (CP) |
ciprofloxacin | phosphodiesterase type 5 (PDE5) inhibitors | concurrent administration may increase PDE5 inhibitor plasma levels and risk of adverse reactions | during coadministration, consider lower dose of PDE5 inhibitor or withholding PDE5 inhibitor in patients at high risk of developing PDE5 inhibitor adverse reactions | moderate (DrugReax) |
ciprofloxacin | probenecid | co-administration may result in increased serum ciprofloxacin levels due to probenecid inhibition of renal tubular secretion | monitor patients for increased ciprofloxacin adverse effects | moderate (DrugReax) 4-minor (CP) |
ciprofloxacin | theophyllines | adjuvant administration may result in decreased theophylline clearance and potential for increased serum theophylline levels and enhanced pharmacologic/toxic effects as ciprofloxacin interferes with theophylline clearance | if adjunctive therapy necessary, closely monitor theophylline levels and observe for increased adverse effects; may consider alternative FQ that does not interfere with theophylline clearance | major (DrugReax) 3-moderate (CP) |
ciprofloxacin | tizanidine (Ziaflex®) | combined administration may result in enhanced tizanidine pharmacologic effects and/or adverse effects (e.g., sedation, hypotension) due to ciprofloxacin inhibition of CYP1A2-mediated tizanidine metabolism | avoid concurrent administration; use alternative spasticity medication | contraindicated (DrugReax) 1-severe (CP) |
fluoroquinolones (FQ) | antacids | simultaneous administration may result in reduced absorption/bioavailability and clinical effectiveness of the FQ due to chelation of the antacid cations with the quinolone molecule | avoid concurrent administration; give FQ 2 hours before or 6 hours after giving antacids; may consider H2 receptor antagonist as alternative to antacids (e.g., ranitidine) in some clinical situations | moderate (DrugReax) 2-major (CP) |
FQ | antidiabetic agents | adjunctive administration may result in altered blood glucose levels and increased risk for hypo- or hyperglycemia | monitor serum glucose levels closely with concurrent administration | major (DrugReax) 3-moderate (CP) |
FQ | corticosteroids | concurrent therapy may increase risk for tendon rupture, especially in patients over 60 years of age | discontinue FQ therapy with any signs of tendon inflammation or pain | moderate (DrugReax) 3-moderate (CP) |
FQ | didanosine (Videx®) oral solution | didanosine buffers consist of magnesium-aluminum cations; concomitant administration with FQ may result in reduced FQ absorption/ bioavailability and clinical effectiveness due to chelation of the antacid cations with the quinolone molecule | avoid concurrent administration; give FQ 2 hours before or 6 hours after giving didanosine | moderate (DrugReax) 2-major (CP) |
FQ | iron salts (including iron in multivitamins) | iron salts may bind FQ in GI tract forming insoluble, unabsorbable complexes with resultant reduced FQ serum concentrations/pharmacologic effects | avoid concurrent administration; give FQ 2 hours before or 6 hours after giving drugs containing iron | moderate (DrugReax) 2-major (CP) |
FQ | nonsteroidal anti-inflammatory drugs (NSAIDs) | concurrent administration may increase risk of central nervous system (CNS) stimulation and convulsive seizures | administer cautiously together and monitor patients closely for increased CNS adverse effects | moderate (DrugReax) 3-moderate (CP) |
FQ | QTc interval-prolonging medications (e.g., class IA, III anti-arrhythmics, tricyclic antidepressants, clozapine, cyclobenzaprine, macrolide antibiotics, cisapride, ziprasidone) | concurrent administration may increase risk of significant cardiotoxicity (e.g., life-threatening arrhythmias, cardiac arrest) as FQ may cause QTc interval prolongation and, rarely, torsades de pointes | adjunctive administration should be avoided | contraindicated, major (DrugReax) 1-severe, 2-major (CP) |
FQ | sevelamer (Renagel®) | concurrent administration may cause decreased FQ bioavailability and potential for reduced pharmacologic effects | avoid concurrent administration; administer FQ 1 hour before or 3 hours after sevelamer | moderate (DrugReax) 2-major (CP) |
FQ | sucralfate | concurrent administration may result in decreased FQ efficacy due to FQ chelation by sucralfate in GI tract | avoid concurrent administration; give FQ 2 hours before or 6 hours after giving sucralfate | moderate (DrugReax) 2-major (CP) |
FQ | warfarin | concomitant administration may result in enhanced hypoprothrombinemic effects and increased bleeding risk; mechanism of this interaction not identified; changes in PT/INR may occur 2-16 days after addition of FQ to warfarin therapy | if combination cannot be avoided, monitor PT/INR closely and observe for increased adverse effects | major (DrugReax) 2-major (CP) |
FQ | zinc salts, calcium | zinc salts or calcium may bind FQ in GI tract forming insoluble, unabsorbable complexes with resultant reduced FQ serum concentrations/ pharmacologic effects | avoid concurrent administration; give FQ 2 hours before or 6 hours after giving drugs containing zinc | moderate (DrugReax) |
select FQ (ciprofloxacin, levofloxacin) | cyclosporine | adjunctive administration has resulted in transiently increased serum creatinine levels and/or increased cyclosporine levels | monitor serum creatinine and cyclosporine levels; observe patients for cyclosporine adverse effects | moderate (DrugReax) |
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc; 2022. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu. Accessed May 17th, 2022.
- IBM Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/ (cited: May 17th, 2022).
- Ciprofloxacin tablets (Cipro®) package insert. Bayer Healthcare Pharmaceuticals, Inc., November 2021.
- Ciprofloxacin extended-release tablets (Cipro® XR) package insert. Mylan Pharmaceuticals, Inc., May 2019.
- Delafloxacin tablets (Baxdela®) package insert. Melinta Therapeutics, LLC. June 2021.
- Gemifloxacin tablets (Factive®) package insert. Merus Labs International, Inc., August 2016.
- Levofloxacin tablets (Levaquin®) package insert. Cipla USA Inc., July 2020.
- Moxifloxacin tablets (Avelox®) package insert. Bayer Healthcare Pharmaceuticals Inc., July 2016.
- Ofloxacin tablets package insert. Dr. Reddy’s Laboratories Limited, December 2018.
- Jackson MA, Schutze GE, for the Committee on Infectious Diseases. The use of systemic and topical fluoroquinolones. Pediatrics. 2016;138(5):e1-e13 (doi: 10.1542/peds.2016-2706).
Gabapentin
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Jan. 2022, Nov. 2019; Nov. 2017; Sept. 2015; Dec. 2013; Jan. 2012; Dec. 2011; April 2010; Aug. 2006.
- Initially developed
- June 2006
1. Dosage
1.1. Adults
Gabapentin (Neurontin®, Gralise®) is FDA-approved for use in adults with postherpetic neuralgia pain and as adjunctive therapy for managing partial seizures with or without secondary generalization in epileptic patients.1-6 Gabapentin enacarbil (Horizant®) has been FDA-approved for management of moderate-to-severe restless legs syndrome (RLS) in adults, and is also approved for pain reduction in postherpetic neuralgia (PHN).1-4, 7 Gralise® and Horizant® are not interchangeable with Neurontin® and available generics due to differing chemical forms and pharmacokinetic properties. Maximum recommended adult dosages are summarized in Table 11-7. The maximum time interval between gabapentin immediate-release doses should not exceed 12 hours. Patient profiles containing doses that exceed the maximum recommended dose will be reviewed1-15.
While not FDA-approved, gabapentin has also been evaluated in adult clinical trials for use in neuropathic pain, fibromyalgia, and vasomotor symptoms with favorable results1-3.
Table 1: Maximum Recommended Adult Gabapentin Dosages
Treatment Indication | Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
Partial seizures with/without secondary generalized tonic-clonic seizures | gabapentin (Neurontin®, generics) | 100 mg, 300 mg, 400 mg immediate-release (IR) capsules 600 mg, 800 mg IR tablet 250 mg/5 mL, 300 mg/ 6 mL oral solution | 2400 mg/day (in three divided doses*) |
Postherpetic neuralgia-associated neuropathic pain | gabapentin (Neurontin®, generics) | 100 mg, 300 mg, 400 mg IR capsules 600 mg, 800 mg IR tablet 250 mg/5 mL, 300 mg/ 6 mL oral solution | 3600 mg daily in divided doses+ |
Postherpetic neuralgia-associated neuropathic pain | gabapentin (Gralise®) | 300 mg, 600 mg extended-release (ER) tablets | 1800 mg once daily |
Postherpetic neuralgia-associated neuropathic pain | gabapentin enacarbil (Horizant®) | 300 mg, 600 mg ER tablet | 1200 mg daily in two divided doses |
Restless legs syndrome | gabapentin enacarbil (Horizant®) | 300 mg, 600 mg ER tablet | 600 mg daily at 5 pm^ |
Legend:
- *Doses of 3600 mg/day have also been well tolerated in small numbers of patients for abbreviated treatment durations.
- +Doses up to 3600 mg/day have been administered with therapeutic effect; however, additional benefit with doses greater than 1800 mg/day may not be observed.
- ^Gabapentin enacarbil doses up to 1200 mg daily have been used in clinical trials with no additional benefit and increased adverse reactions.
1.2. Pediatrics
Gabapentin is FDA-approved for use as adjunctive therapy for partial seizures with or without generalization in pediatric epileptic patients 12 years of age and older, as well as adjunctive therapy for partial seizures in pediatric patients 3 years to 12 years of age1-5. Gabapentin extended-release formulations are not approved for use in pediatric patients as safety and efficacy in this patient population have not been established1-4, 6, 7. Maximum recommended pediatric gabapentin dosages are summarized in Table 25. The maximum time interval between gabapentin doses should not exceed 12 hours. Patient profiles containing gabapentin doses greater than maximum recommendations will be reviewed.
Table 2: Maximum Recommended Pediatric Gabapentin Dosages
Treatment Indication | Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
Partial seizures with/without secondary generalized tonic-clonic seizures | gabapentin (Neurontin®, generics) | 100 mg, 300 mg, 400 mg immediate-release (IR) capsules 600 mg, 800 mg IR tablet 250 mg/5 mL, 300 mg/ 6 mL oral solution |
|
Legend:
- +Doses up to 50 mg/kg/day have been well tolerated in an extended clinical trial.
- *Doses of 3600 mg/day have also been well tolerated in small numbers of patients for abbreviated treatment durations.
1.3. Renal Impairment
Gabapentin dosing guidelines for adult with renal impairment are summarized in Table 3. Dosing guidelines for gabapentin immediate-release are also applicable for adolescents 12 years of age and older with renal impairment. Gabapentin use in pediatric patients younger than 12 years of age with impaired renal function has not been evaluated1-7.
Table 3: Gabapentin Dosage Guidelines in Adults, Adolescents 12 Years of Age and Older with Renal Impairment
Creatinine Clearance (CrCl) | Recommended Dosage Adjustments | |
---|---|---|
Gabapentin immediate-release | ||
60 ml/min or greater | 900 mg to 3600 mg daily, in three divided doses | |
30-59 ml/min | 400 mg to 1400 mg daily, in two divided doses | |
15-29 ml/min | 200 mg to 700 mg once daily | |
15 ml/min | 100 mg to 300 mg once daily | |
Less than less than 15 ml/min | daily dose decreased in proportion to CrCl (e.g., CrCl = 7.5 ml/min – administer 50% of dose for CrCl of 15 ml/min) | |
anephric patients | maintenance doses based on CrCl estimates, with supplemental doses of 125 mg to 350 mg administered after every 4-hour hemodialysis session | |
Gabapentin extended-release | ||
Gralise® | ||
60 ml/min or greater | no dosage adjustment needed – 1800 mg once daily with evening meal | |
30 – 59 ml/min | 600 mg to 1800 mg once daily with evening meal | |
Less than 30 ml/min | avoid administering Gralise® | |
hemodialysis patients | avoid administering Gralise® | |
Horizant® | ||
Restless legs syndrome | 60 ml/min or greater | no dosage adjustment needed |
30 – 59 ml/min | start with 300 mg daily with evening meal (~ 5 pm), increasing to 600 mg daily with evening meal as needed | |
15-29 ml/min | 300 mg daily with evening meal (~ 5 pm) | |
Less than 15 ml/min | 300 mg every other day with evening meal (~ 5 pm) | |
15-29 ml/min | 300 mg daily with evening meal (~ 5 pm) | |
Less than 15 ml/min on hemodialysis | Horizant® not recommended for use | |
Postherpetic neuralgia | 60 ml/min or greater | no dosage adjustment needed |
30 – 59 ml/min |
|
|
15-29 ml/min |
|
|
Less than 15 ml/min |
|
|
Less than 15 ml/min on hemodialysis |
|
2. Duration of Therapy
There is no basis for limiting the duration of gabapentin therapy since patients may suffer from epilepsy or RLS on a chronic basis, and postherpetic neuralgia management may require weeks to months of therapy8.
3. Duplicative Therapy
Gabapentin dosage formulations are not interchangeable due to variations in chemical forms and pharmacokinetic properties. Concurrent administration of two or more gabapentin formulations is not recommended due to lack of additional therapeutic benefit and increased risk of adverse effects. Patient profiles containing concomitant prescriptions for two or more gabapentin dosage formulations for more than two months will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for gabapentin are summarized in Table 41-7. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Table 4: Gabapentin Drug-Drug Interactions
Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|
antacids | decreased gabapentin oral availability by approximately 20% | administer gabapentin at least two hours after antacids to avoid bioavailability problems | moderate (DrugReax) 3-moderate (CP) |
hydrocodone | potential for decreased hydrocodone peak concentrations and AUC with concomitant gabapentin-hydrocodone administration in dose-dependent fashion; minor increases in gabapentin AUC | observe patients for decreased hydrocodone efficacy or additive drowsiness | 3-moderate (CP) |
morphine | concurrent administration may result in increased gabapentin serum levels (gabapentin AUC increased by 44% when morphine 60 mg controlled- release given 2 hours prior to gabapentin 600 mg) | monitor patients for increased CNS depression; adjust gabapentin and/or morphine doses as necessary | moderate (DrugReax) 3-moderate (CP) |
Legend:
- #CP = Clinical Pharmacology
5. References
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed November 23, 2021.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2017. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed November 23, 2021.
- Facts and Comparisons eAnswers [database online]. Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2021. Available at: https://fco-factsandcomparisons-com.ezproxy.lib.utexas.edu. Accessed November 23, 2021.
- American Society of Health-System Pharmacists. 2021. AHFS Drug Information® - 2021st Ed. Bethesda, MD. American Society of Health-System Pharmacists®. STAT!Ref Online Electronic Medical Library. Available at: https://online.statref.com/document/cQfe8yqMRNqgSGqm4Qo8Qj. Accessed November 23, 2021.
- Gabapentin (Neurontin®) package insert. Pfizer, October 2021.
- Gabapentin extended-release tablets (Gralise®) package insert. Almatica Pharma LLC, February 2021.
- Gabapentin enacarbil extended-release tablets (Horizant®) package insert. Arbor Pharmaceuticals, LLC, September 2021.
- The US Gabapentin Study Group. The long-term safety and efficacy of gabapentin (Neurontin) as add-on therapy in drug-resistant partial epilepsy. Epilepsy Res. 1994;18(1):67–73.
- Appleton R, Fichtner K, LaMoreaux L, et al. Gabapentin as add-on therapy in children with refractory partial seizures: a 12-week, multicentre, double-blind, placebo-controlled study. Gabapentin Paediatric Study Group. Epilepsia. 1999;40(8):1147–54.
- Marson AG, Kadir ZA, Hutton JL, Chadwick DW. Gabapentin add-on for drug-resistant partial epilepsy. Cochrane Database Syst Rev. 2000;(3):CD001415.
- Ortega E. Postherpetic neuralgia. Post TW, ed. UpToDate. Waltham, MA: UpToDate Inc. https://www.uptodate.com (Accessed on November 23, 2021.)
- Wiffen PJ, Derry S, Bell RF, et al. Gabapentin for chronic neuropathic pain in adults. Cochrane Database Syst Rev. 2017;6(6):CD007938. Published 2017 Jun 9. doi:10.1002/14651858.CD007938.pub4.
- Johnson RW, Rice AS. Clinical practice. Postherpetic neuralgia. N Engl J Med. 2014;371(16):1526-33.
- Trenkwalder C, Allen R, Högl B, et al. Comorbidities, treatment, and pathophysiology in restless legs syndrome. Lancet Neurol. 2018;17(11):994–1005. doi:10.1016/S1474-4422(18)30311-9.
- Kim ES, Deeks ED. Gabapentin enacarbil: a review in restless legs syndrome. Drugs. 2016;76(8):879–87.
Glucagon-like Peptide 1 Receptor Agonists
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- October 21, 2022; September 2020; September 2018; September 2016; June 2015; October 2013; December 2011; February 2010; January 2010; August 2006; May 2006.
- Initially developed
- Feb. 2006
1. Dosage
1.1. Adults
Incretin hormones such as glucagon-like peptide (GLP-1) are peptides released from gastrointestinal tract cells in response to food ingestion that stimulate glucose-dependent insulin release from the pancreas, decrease glucagon production, and slow gastric emptying1,2. Incretin mimetics, also known as GLP-1 agonists, are FDA-approved as adjunct therapy to diet and exercise to improve glycemic control in patients with type 2 diabetes1-12. GLP-1 agonists are appropriate first-line therapies in patients with type 2 diabetes who have or are at high risk of developing atherosclerotic cardiovascular disease and/ or chronic kidney disease.13 Several GLP-1 agonists have demonstrated cardiovascular benefit in patients with established atherosclerotic cardiovascular disease (ASCVD) including dulaglutide, liraglutide, and the injectable formulation of semaglutide1-3,6,9 . The oral formulation of semaglutide has not demonstrated the same reduction in cardiovascular outcomes as the injectable formulation.14. It is recommended to initiate a GLP-1 agonist with demonstrated cardiovascular benefit, in addition to current therapy, in patients with established ASCVD or indicators of high ASCVD risk including age of 55 years or older with coronary, carotid, or lower extremity artery stenosis greater than 50% or left ventricular hypertrophy.15 Two GLP-1 agonists, Saxenda® (liraglutide) and Wegovy® (semaglutide), are approved for chronic weight management in patients with a BMI of 30 kg/m2 or greater, or in patients with a BMI of 27 kg/m2 or greater with the presence of at least one weight-related comorbidity, such as hypertension, type 2 diabetes, or dyslipidemia1,2,7,10.
All GLP-1 agonists have been found to cause c-cell tumors in rodent models, but the human relevance has not been determined. All agents except for Byetta® (exenatide) and Adylxin® (lixisenatide) have a black box warning for risk of thyroid C-cell tumors, and they are contraindicated in patients with a personal or family history of medullary thyroid carcinoma (MTC). These agents are also contraindicated in patients with Multiple Endocrine Neoplasia syndrome 2 (MEN 2). Additionally, all GLP-1 agonists have a warning for acute pancreatitis, and patients should not resume therapy with a GLP-1 agonist if acute pancreatitis has occurred. GLP-1 agonists should generally be avoided in patients who are pregnant unless the potential benefit outweighs the potential risk to the fetus. Pregnancy is a contraindication to therapy for the following agents; Saxenda® (liraglutide), Wegovy® (semaglutide), Rybelsus® (semaglutide), and Ozempic® (semaglutide)1,2,7,9-11.
Additional warnings for this drug class include hypoglycemia when used in combination with an insulin secretagogue or insulin, acute kidney injury or renal impairment, and hypersensitivity reactions. GLP-1 agonists have not been studied in patients with gastroparesis, and all drugs within this class, except for liraglutide and semaglutide, recommend against use in patients with preexisting gastroparesis1-12.
GLP-1 agonist recommended dosages are summarized in Table 1. Patient profiles containing prescriptions with GLP-1 agonist dosages that exceed these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indications | Maximum Recommended Dosage |
---|---|---|---|
dulaglutide (Trulicity®) | extended-release SC solution; 0.75 mg/0.5 mL, 1.5 mg/0.5mL, 3 mg/0.5 mL, and 4.5 mg/0.5 mL as single-dose pens | type 2 diabetes mellitus; reduction of CV mortality | 0.75 mg SC once weekly, then titrate to 1.5 mg once weekly; if glycemic control not achieved, may titrate up every 4 weeks to a maximum of 4.5 mg once weekly |
exenatide (Byetta®) | regular-release SC solution; 5 mcg/0.02 mL pen, 10 mcg/0.04 mL pen* | type 2 diabetes mellitus | 5 mcg SC twice daily initially within 60 minutes prior to the morning and evening meals, or prior to the two main meals of the day spaced six hours or more apart; dose may be increased to 10 mcg twice daily prior to the morning and evening meals (or the two main meals of the day, spaced six hours or more apart) after one month of therapy based on clinical response |
exenatide (Bydureon® BCise | extended-release SC injectable suspension; 2 mg/0.85 mL single dose autoinjector+ | type 2 diabetes mellitus | 2 mg SC once weekly at any time of day, with or without meals |
liraglutide (Victoza®) | SC solution; multi-dose pen (18 mg/3 mL) that delivers doses of 0.6 mg, 1.2 mg, or 1.8 mg | type 2 diabetes mellitus; reduction of CV mortality | 0.6 mg@ SC daily for at least one week; titrate to 1.2 mg daily, up to maximum of 1.8 mg daily |
liraglutide (Saxenda®) | SC solution; multi-dose pen (18 mg/3 mL) that delivers doses of 0.6 mg, 1.2 mg, 1.8 mg, 2.4 mg, or 3 mg | chronic weight management | 0.6 mg SC daily for at least one week, followed by an increase in increments of 0.6 mg every week up to maximum of 3 mg SC mg daily |
lixisenatide (Adlyxin®) | SC solution; multi-dose pen available as either 10 mcg per dose (150 mcg/3 mL) or 20 mcg per dose (300 mcg/3 mL) | type 2 diabetes mellitus | 10 mcg SC once daily for 14 days; on day 15 increase dose to 20 mcg daily |
semaglutide (Ozempic®) | SC solution; multi-dose pen available as either 0.25 mg or 0.5 mg per dose (2 mg/1.5 mL), 1 mg per dose (4 mg/3 mL), or 2 mg per dose (8 mg/3 mL) | type 2 diabetes mellitus; reduction of CV mortality | 0.25 mg@ SC once weekly x 4 weeks, then titrate upward to 0.5 mg once weekly; if glycemic control not achieved after 4 weeks, may titrate to 1 mg once weekly; if glycemic control not achieved after 4 weeks, may titrate to a maximum of 2 mg once weekly |
semaglutide (Wegovy®) | SC solution; single-dose pen that delivers doses of 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, or 2.4 mg | chronic weight management | 0.25 mg SC weekly for at least 4 weeks, followed by a dose escalation every 4 weeks up to maximum of 2.4 mg daily |
tirzepatide (Mounjaro®) | SC solution; single dose pens available as 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, or 15 mg per 0.5 mL | type 2 diabetes mellitus | 2.5 mg@ SC once weekly x 4 weeks, then titrate upward to 5 mg SC once weekly; if glycemic control not achieved, may titrate up by 2.5 mg increments every 4 weeks to a maximum of 15 mg SC once weekly |
Legend:
- SC = subcutaneous
- * each exenatide regular-release pen provides 60 doses of medication
- + each exenatide extended-release autoinjector is single-dose; supplied in carton of 4 pens
- @ indicates dose is for therapy titration only – does not provide glycemic control
Drug Name | Dosage Form/Strength | Treatment Indications | Maximum Recommended Dosage |
---|---|---|---|
semaglutide (Rybelsus®) | 3 mg, 7 mg, 14 mg oral tablets | type 2 diabetes mellitus | 3 mg daily for 30 days, if glycemic control not achieved, may titrate up to 7 mg daily, may titrate after 30 days to a maximum of 14 mg daily |
1.2. Pediatrics
The use of GLP-1 agonists Victoza® (liraglutide) and Bydureon® (exenatide) have been proven to be safe and effective as an adjunct to diet and exercise to improve glycemic control in pediatric patients that are 10 years of age and older with established Type 2 diabetes1,2,5,6 . Saxenda® (liraglutide) is approved as an adjunct to a reduced-calorie diet and increased physical activity for chronic weight management in patients 12 years of age and older weighing over 60 kg and an initial BMI of 30 kg/m2 or greater1,2,7.
Drug Name | Dosage Form/Strength | Treatment Indications | Maximum Recommended Dosage |
---|---|---|---|
exenatide (Bydureon® BCise) | extended-release SC injectable suspension; 2 mg/0.85 mL single dose autoinjector+ | type 2 diabetes mellitus | 10 years to 17 years: 2 mg SC once weekly at any time of day, with or without meals |
liraglutide (Victoza®) | SC solution; multi-dose pen (18 mg/3 mL) that delivers 0.6 mg, 1.2 mg, or 1.8 mg | type 2 diabetes mellitus | 10 years to 17 years: 0.6 mg SC daily for at least one week; if glycemic control is not achieved, may titrate up to 1.2 mg SC daily, after one week may increase to maximum of 1.8 mg daily |
liraglutide (Saxenda®) | SC solution; multi-dose pen (18 mg/3 mL) that delivers doses of 0.6 mg, 1.2 mg, 1.8 mg, 2.4 mg, or 3 mg | chronic weight management | 12 years to 17 years: 0.6 mg SC daily for at least one week, followed by an increase in increments of 0.6 mg every week up to maximum of 3 mg daily |
Legend:
- + each exenatide extended-release autoinjector is single-dose; supplied in carton of 4 pens
2. Duration of Therapy
GLP-1 agonists are indicated for the management of type 2 diabetes mellitus and may be continued indefinitely, as control of blood glucose is a chronic, lifelong process. There is no basis for limiting the duration of treatment for GLP-1 agonists in patients using this medication for chronic weight management if it remains beneficial for weight loss and is not causing intolerable side effects16.16
3. Duplicative Therapy
Adjunctive administration of multiple GLP-1 agonists is not recommended due to increased risk for adverse events with no additional therapeutic benefit. Exenatide regular-release should be discontinued prior to initiating exenatide extended-release therapy. Patient profiles containing prescriptions for multiple GLP-1 agonists will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for GLP-1 agonists are summarized in Table 2. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level* |
---|---|---|---|---|
antidiabetic agents | fluoroquinolones | adjunctive administration may result in blood glucose disturbances and increased risk for hyper- or hypoglycemia due to an unknown mechanism | closely monitor blood glucose levels and adjust antidiabetic doses as needed; doses may also require adjustments with fluoroquinolone discontinuation | major (DrugReax) 3-moderate (CP) |
antidiabetic agents | somatostatin analogues (SAs) (e.g., octreotide, pasireotide) | concurrent use may impair glucose regulation as SAs inhibit insulin and glucagon secretion; substantially increased blood glucose levels may result | monitor closely for changes in blood glucose control before and throughout SA therapy; adjust antidiabetic doses as needed | major (DrugReax) 2-major (CP) |
exenatide, semaglutide, lixisenatide, tirzepatide | warfarin | concurrent administration may result in increased international normalized ratio (INR), sometimes with associated bleeding; mechanism unknown | closely monitor for changes in INR and bleeding with exenatide/warfarin drug combination | moderate (DrugReax) 3-moderate (CP) |
GLP-1 agonists | gastric stimulants (e.g., metoclopramide, tegaserod) | concurrent administration may attenuate pharmacologic effects due to competing effects from both agents | monitor blood glucose levels and adjust antidiabetic doses as needed | 3-moderate (CP) |
GLP-1 agonists | insulin secretagogues (e.g., sulfonylureas, insulin) | adjunctive administration may lead to increased hypoglycemia due to additive glucose-lowering effects | avoid use, if possible; if combined use needed, adjust insulin secretagogue or insulin doses and closely monitor blood glucose levels | major, moderate (DrugReax) 2-major, 3-moderate (C)P) |
GLP-1 agonists | oral contraceptives (OCs) | concurrent administration may reduce OC serum levels and reduce efficacy as GLP-1 agonists delay gastric emptying; also, estrogens and progestins impair glucose tolerance | use cautiously together; administer OCs at least 1 hour before GLP-1 agonists and monitor for glycemic control | lixisenatide – major (DrugReax) 3-moderate (CP) |
tirzepatide | oral contraceptives (OCs) | concurrent administration may reduce OC serum levels and reduce efficacy as GIP/GLP-1 agonists delay gastric emptying; the impact the greatest after the first dose, and this effect diminishes with subsequent doses | use non-oral contraceptive or add barrier method for the 4 weeks after initiation and 4 weeks after each dose escalation | 2-major (CP) |
GLP-1 agonists | oral medications with hypoglycemic effects (e.g., oral antidiabetic agents, angiotensin-converting enzyme inhibitors, angiotensin II receptor blockers, fibric acid derivatives, salicylates, sulfonamide antibiotics) | concomitant administration may result in enhanced hypoglycemic pharmacologic and adverse effects | monitor blood glucose levels closely and adjust dosages as necessary if drug combination required to minimize excessive hypoglycemia and associated adverse events | 3-moderate (CP) |
GLP-1 agonists | oral medications that slow gastrointestinal motility (e.g., opiate agonists, tricyclic antidepressants, antimuscarinics, diphenoxylate) | adjunctive administration may potentiate GLP-1 agonist pharmacologic effects, including additional blood glucose reductions and hypoglycemia risk | use cautiously together | undetermined |
Legend:
- *CP = Clinical Pharmacology
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Accessed July 10, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Accessed July 10, 2022.
- Dulaglutide subcutaneous injection (Trulicity®) package insert. Eli Lilly and Company, June 2022.
- Exenatide regular-release (Byetta®) package insert. AstraZeneca Pharmaceuticals, June 2022.
- Exenatide extended-release (Bydureon BCise®) package insert. AstraZeneca Pharmaceuticals, June 2022.
- Liraglutide subcutaneous injection (Victoza®) package insert. Novo Nordisk, June 2022.
- Liraglutide subcutaneous injection (Saxenda®) package insert. Novo Nordisk, June 2022.
- Lixisenatide subcutaneous injection (Adlyxin™) package insert. Sanofi-Aventis, June 2022.
- Semaglutide subcutaneous injection (Ozempic®) package insert. Novo Nordisk, March 2022.
- Semaglutide subcutaneous injection (Wegovy®) package insert. Novo Nordisk, June 2022.
- Semaglutide oral tablets (Rybelsus®) package insert. Novo Nordisk, June 2022.
- Tirzepatide subcutaneous injection (Mounjaro®) package insert. Eli Lilly and Company, May 2022.
- American Diabetes Association. 9. Pharmacologic approaches to glycemic treatment: standards of medical care in diabetes -2022. Diabetes Care. 2022;45(Suppl. 1):S125–S143.
- Husain M, Birkenfeld AL, Donsmark M, et al. Oral semaglutide and cardiovascular outcomes in patients with type 2 diabetes. New England Journal of Medicine. 2019;381(9):841-851.
- American Diabetes Association. 10. Cardiovascular disease and risk management: standards of medical care in diabetes -2022. Diabetes Care. 2022;45(Suppl. 1):S144–S174.
- Ard J, Fitch A, Fruh S, Herman L. Weight Loss and Maintenance Related to the Mechanism of Action of Glucagon-Like Peptide 1 Receptor Agonists. Adv Ther. 2021 Jun;38(6):2821-2839.
Hepatitis C Direct-Acting Antivirals
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Vendor Drug Program formulary coverage.
Note: This retrospective drug use criteria provides information from each respective therapies FDA approved package insert. Further guidance for patient specific treatments can be found within the continuously updated American Association for the Study of Liver Disease (AASLD) and the Infectious Diseases Society of America (IDSA) “HCV Guidance: Recommendations for Testing, Managing, and Treating Hepatitis C” guidelines at www.hcvguidelines.org. It is recommended to consult these guidelines prior to initiating therapy to treat hepatitis C infection.
- Revision history
- July 22, 2022
- Initially developed
- March 2018
1. Dosage
1.1. Adults
Direct acting antivirals (DAA) for hepatitis are FDA-indicated for treatment of chronic infections caused by hepatitis C virus (HCV). Individual agents have varying FDA indications and treatment durations based on genotype (1-6), subtype (1a vs. 1b), liver function, HIV co-infection and/or previous treatment history1.
Table 1 provides DAA information for treatment naïve patients with or without cirrhosis.
Drug Name | Dosage Form/Strength | Treatment Indication | Duration and Coadministration | Maximum Recommended Dosage |
---|---|---|---|---|
elbasvir/ grazoprevir (Zepatier®) | 50 mg/100 mg tablet |
Chronic HCV treatment:
|
16 weeks with ribavirin | 50 mg elbasvir and 100 mg grazoprevir once daily |
|
12 weeks | |||
|
12 weeks | |||
|
12 weeks | |||
glecaprevir/pibrentasvir (Mavyret®) | 100 mg/40 mg tablets |
Chronic HCV treatment:
|
8† weeks | 300 mg glecaprevir and 120 mg pibrentasvir once daily |
ledipasvir/ sofosbuvir (Harvoni®, generics) | 90 mg/400 mg tablet |
Chronic HCV treatment:
|
8* weeks or 12 weeks | 90 mg ledipasvir and 400 mg sofosbuvir once daily |
|
12 weeks | |||
|
12 weeks plus ribavirin | |||
|
12 weeks plus ribavirin | |||
genotype 4
|
12 weeks plus ribavirin | |||
|
12 weeks | |||
sofosbuvir/ velpatasvir (Epclusa®, generics) | 400 mg/100 mg tablets |
Chronic HCV treatment:
|
12 weeks | 400 mg sofosbuvir and 100 mg velpatasvir once daily |
|
12 weeks plus ribavirin | |||
sofosbuvir (Sovaldi®) | 400 mg tablet |
Chronic HCV treatment:
|
12 weeks plus ribavirin and peginterferon | 400 mg once daily |
|
12 weeks plus ribavirin | |||
|
24 weeks plus ribavirin |
Legend:
- HCV = hepatitis C virus;
- NS5A inhibitors = Nonstructural protein 5A (NS5A) inhibitors
- NS3/4A protease inhibitors = Nonstructural protein 3/4A protease inhibitors
- † = For HIV/HCV-coinfected patients, a treatment duration of 12 weeks is recommended with compensated cirrhosis (Child-Pugh A) for genotypes 1-4 and genotypes 5 and 6 regardless of liver status
- * = 8 weeks of treatment can be considered in treatment naïve genotype 1 patients without cirrhosis who have pretreatment HCV RNA less than 6 million IU/mL
Drug Name | Dosage Form/Strength | Treatment Indication | Duration and Coadministration | Maximum Recommended Dosage |
---|---|---|---|---|
elbasvir/grazoprevir (Zepatier®) | 50 mg/100 mg tablet |
Chronic HCV treatment:
|
12 weeks | 50 mg elbasvir and 100 mg grazoprevir once daily |
|
16 weeks plus ribavirin | |||
|
12 weeks plus ribavirin | |||
genotype 1b:
|
12 weeks | |||
|
12 weeks plus ribavirin | |||
|
16 weeks plus ribavirin | |||
glecaprevir/ pibrentasvir (Mavyret®) | 100 mg/40 mg tablets |
Chronic HCV treatment:
|
16 weeks | 300 mg glecaprevir and 120 mg pibrentasvir once daily |
|
12 weeks | |||
|
8 weeks | |||
|
12 weeks | |||
|
16 weeks | |||
ledipasvir/sofosbuvir (Harvoni®, generics) | 90 mg/400 mg tablet |
Chronic HCV treatment:
|
12 weeks | 90 mg ledipasvir and 400 mg sofosbuvir once daily |
|
24 weeks or 12 weeks in combination with ribavirin† | |||
|
12 weeks plus ribavirin | |||
|
12 weeks plus ribavirin | |||
|
12 weeks plus ribavirin | |||
|
12 weeks | |||
sofosbuvir/velpatasvir (Epclusa®, generics) | 400 mg/100 mg tablets |
Chronic HCV treatment:
|
12 weeks | 400 mg sofosbuvir and 100 mg velpatasvir once daily |
|
12 weeks plus ribavirin | |||
sofosbuvir (Sovaldi®) | 400 mg tablet |
Chronic HCV treatment:
|
12 weeks plus ribavirin | 400 mg once daily |
|
24 weeks plus ribavirin | |||
sofosbuvir, velpatasvir, and voxilaprevir (Vosevi®) | 400 mg/100 mg/100 mg |
Chronic HCV treatment:
|
12 weeks | 400 mg of sofosbuvir, 100 mg of velpatasvir, and 100 mg of voxilaprevir once daily |
|
12 weeks |
1.2. Pediatrics
Safety and efficacy of DAAs for use in children younger than 18 years of age has been established with sofosbuvir (Sovaldi®), sofosbuvir/velpatasvir (Epclusa®), glecaprevir/pibrentasvir (Mavyret®), elbasvir/grazoprevir (Zepatier®), and ledipasvir/ sofosbuvir (Harvoni®)2-8, 10-11. Safety and effectiveness of sofosbuvir/velpatasvir/voxilaprevir (Vosevi®) has not been established in pediatric patients less than 18 years of age9. Recommended DAA dosages in pediatric patients are summarized in Table 3.
Drug Name | Dosage Form/Strength | Treatment Indication | Duration and Coadministration | Maximum Recommended Dosage |
---|---|---|---|---|
elbasvir/grazoprevir (Zepatier®) | 50 mg/100 mg tablet |
Chronic HCV treatment in pediatric patients 12 years of age and older weighing at least 30kg with or without mild hepatic impairment (Child-Pugh A):
|
12 weeks | Patients 12-17 years of age: 50 mg elbasvir and 100 mg grazoprevir tablet once daily |
genotype 1a: treatment naïve or peginterferon and ribavirin experienced with baseline NS5A polymorphisms∆ | 16 weeks plus ribavirin* | |||
genotype 1b: treatment naïve or peginterferon and ribavirin experienced | 12 weeks | |||
genotypes 1a£ or 1b: Peginterferon, ribavirin, and NS3/4A protease inhibitor experienced | 12 weeks plus ribavirin* | |||
genotype 4: treatment naïve | 12 weeks | |||
genotype 4: treatment naïve or peginterferon and ribavirin experienced | 16 weeks plus ribavirin* | |||
glecaprevir/pibrentasvir (Mavyret®) |
100 mg/40 mg tablets 50 mg/20 mg oral pellet packets |
Chronic HCV treatment in pediatric patients 3 years of age and older:
|
8 weeks |
|
genotype 1 previously treated with an NS5A inhibitor (ledipasvir and sofosbuvir or daclatasvir with pegylated or nonpegylated interferon plus ribavirin) without prior NS3/4A treatment without cirrhosis or with compensated cirrhosis (Child-Pugh A) | 16 weeks | |||
genotype 1 liver or kidney transplant recipients previously treated with an NS5A inhibitor without prior NS3/4A treatment | 16 weeks | |||
genotype 1 previously treated with an NS3/4A protease inhibitor (containing simeprivir, and sofosbuvir, or simeprevir, boceprevir, or telaprevir with pegylated or nonpegylated interferon and ribavirin) without previous NS5A inhibitor treatment | 12 weeks | |||
genotypes 1, 2, 4, 5, or 6 previously treated with peginterferon, ribavirin, and/or sofosbuvir, but no prior treatment experience with an HCV NS3/4A PI or NS5A inhibitor without cirrhosis | 8 weeks | |||
genotypes 1, 2, 4, 5, or 6 previously treated with peginterferon, ribavirin, and/or sofosbuvir, but no prior treatment experience with an HCV NS3/4A PI or NS5A inhibitor with compensated cirrhosis (Child-Pugh A) | 12 weeks | |||
genotype 3 previously treated with peginterferon, ribavirin, and/or sofosbuvir, but no prior treatment experience with an HCV NS3/4A PI or NS5A inhibitor | 16 weeks | |||
genotype 3 liver or kidney transplant recipients previously treated with peginterferon, ribavirin, and/or sofosbuvir, but no prior treatment experience with an HCV NS3/4A PI or NS5A inhibitor | 16 weeks | |||
Liver or kidney transplant recipients | 12 weeks | |||
ledipasvir/sofosbuvir (Harvoni®, generics) |
33.75 mg/150 mg oral pellet packets 45 mg/200 mg oral pellet packets 45 mg/200 mg tablet 90 mg/400 mg tablet |
Chronic HCV treatment in pediatric patients 3 years of age and older:
|
8¥ or 12 weeks |
|
treatment experienced† without cirrhosis | 12 weeks | |||
treatment experienced† with compensated cirrhosis (Child-Pugh A) | 24 weeks** | |||
treatment naïve and treatment experienced† with decompensated cirrhosis (Child-Pugh B or C) | 12 weeks plus ribavirin | |||
genotype 1 or 4 treatment naïve and treatment experienced† liver transplant recipients without cirrhosis or with compensated cirrhosis (Child-Pugh A) | 12 weeks plus ribavirin | |||
genotype 4,5, or 6 treatment naïve or experienced† patients without cirrhosis or with compensated cirrhosis (Child-Pugh A) | 12 weeks | |||
sofosbuvir/velpatasvir (Epclusa®, generics) |
150 mg/37.5 mg oral pellet packets 200 mg/50 mg oral pellet packets 200 mg/50 mg tablets 400 mg/100 mg tablets |
Chronic HCV treatment pediatric patients 3 years of age and older:
|
12 weeks |
Weight based dosing for patients 3-17 years of age:
|
genotype 1, 2, 3, 4, 5, or 6 that are treatment naïve or experienced†† with decompensated cirrhosis (Child-Pugh B and C) | 12 weeks plus ribavirin | |||
sofosbuvir (Sovaldi ®) |
150 mg oral pellet packet 200 mg oral pellet packet 200 mg tablet 400 mg tablet |
Chronic HCV genotype 2 or 3 treatment for pediatric patients 3 years of age and older without cirrhosis or with compensated cirrhosis (Child-Pugh A)
|
12 weeks plus ribavirin* |
Weight based dosing for patients 3-17 years of age:
|
genotype 3 for treatment naïve or experienced# patients | 24 weeks plus ribavirin* |
2. Duration of Therapy
Duration of therapy with hepatitis C DAAs is dependent on cirrhosis status, previous therapy, and hepatitis C virus genotype, with FDA-indicated treatment durations dependent on these factors. Treatment can be anywhere from 8 weeks to 24 weeks1-12. The goal of therapy is a sustained virologic response (SVR), defined as having non-detectable HCV RNA at least 12 weeks post completion of DAA course 1l, 13. Duration of therapy for current treatments can be found in Tables 1-3.
3. Duplicative Therapy
There are no FDA indications for duplicate therapy with multiple combination drug products (e.g. ledipasvir/ sofosbuvir (Harvoni®) with glecaprevir/pibrentasvir (Mavyret™))2-11.
Ribavirin combination therapy is indicated in patients with more advanced liver disease and HCV genotypes that are found to be more resistant (e.g. genotype 3)1,11.
For recommended combination therapies see Duration of Therapy tables above (Tables 1-3).
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. The following drug-drug interactions are considered clinically relevant for DAAs. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
elbasvir | Strong CYP3A4 inducers (e.g. phenytoin, carbamazepine, St John’s wort, phenobarbital) | Concurrent use may decrease elbasvir plasma concentration | Use is contraindicated | 1-severe (CP), contraindicated (DrugReax) |
glecaprevir/ pibrentasvir | Strong or moderate dual CYP3A4 and p-glycoprotein inducers (e.g. rifampin, isoniazid) | Concurrent use may decrease glecepravir plasma concentration | Coadministration should be avoided | 1-severe (CP), major (DrugReax) |
grazoprevir | OTAP1B1/3 inhibitors (e.g. cyclosporine, eltrombopag) | Concurrent use can increase grazoprevir concentrations and elevate ALT. | Use is contraindicated | 1-severe (CP), contraindicated (DrugReax) |
grazoprevir | Protease inhibitors (e.g. saquinavir, ritonavir, darunavir) | Concurrent use can increase grazoprevir concentrations and elevate ALT. | Use is contraindicated | 1-severe (CP), contraindicated (DrugReax) |
ledipasvir | Proton pump inhibitors (PPIs) and histamine 2 receptor antagonists (H2RAs) (e.g. omeprazole, ranitidine) | Increased pH in stomach reduces ledipasvir solubility | Use cautiously; take H2RA simultaneously or 12 hours apart from ledipasvir; PPI dose should not exceed equivalent of omeprazole 20 mg/ day. H2RA should not exceed equivalent of famotidine 40 mg twice daily | 2-Major (CP), Major (DrugReax) |
ledipasvir | p-glycoprotein inducers (e.g. rifampin, St John’s wort) | Concurrent use can decrease ledipasvir concentrations, potentially resulting in loss of antiviral efficacy | Avoid coadministration of ledipasvir with potent p-glycoprotein inducers | 2-Major (CP), Contraindicated (DrugReax) |
sofosbuvir | rifampin | Concurrent use can decrease sofosbuvir concentrations | Avoid coadministration; contraindicated | 2-Major (CP), contraindicated (DrugReax) |
sofosbuvir | p-glycoprotein inducers (carbamazepine, phenytoin) | Concurrent use can decrease sofosbuvir concentrations | Avoid coadministration | 2-Major (CP), Major (DrugReax) |
sofosbuvir | amiodarone | Concurrent use may increase severe bradycardia risk | Avoid coadministration | 2-Major (CP), Major (DrugReax) |
velpatasvir | Strong or moderate dual CYP3A4 and CYP2B6 inducers (e.g., primidone, phenobarbital) | Concurrent use can decrease velpatasvir concentrations | Avoid coadministration | 2-major (CP), major (DrugReax) |
velpatasvir | PPIs and H2RAs (e.g. omeprazole, ranitidine) | Increased pH in stomach reduces velpatasvir solubility | Use cautiously; take H2RA simultaneously or 12 hours apart from velpatasvir; PPI dose should not exceed equivalent of omeprazole 20 mg/ day and should be taken 4 hours after administration of velpatasvir; H2RA should not exceed equivalent of famotidine 40 mg/ twice daily | 2-Major (CP), Major (DrugReax) |
voxilaprevir | Strong or moderate dual CYP3A4 and CYP2B6 inducers (e.g. primidone, phenobarbital) | Concurrent use can decrease voxilaprevir concentrations | Avoid coadministration | 2-major (CP), major (DrugReax) |
voxilaprevir | Strong or moderate dual CYP3A4 and p-glycoprotein inducers (e.g. phenytoin, St. John’s wort) | Concurrent use can decrease voxilaprevir concentrations | Avoid coadministration | 2-major (CP), major (DrugReax) |
voxilaprevir | Cyclosporine (P-glycoprotein inhibitor) | Concurrent use can increase voxilaprevir concentrations | Avoid coadministration | 2-major (CP), major (DrugReax) |
Legend:
- *CP= Clinical Pharmacology
5. References
- Deming P. Viral Hepatitis. In: DiPiro J, Yee G, Posey M, et al. Pharmacotherapy: a pathophysiologic approach, 11e New York, NY: McGraw-Hill. Available from: https://accesspharmacy-mhmedical-com.ezproxy.lib.utexas.edu/content.aspx?bookid=2577§ionid=224357874#1182438955. Accessed 10 June 2022.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc; 2022. Available at: http://www.clinicalpharmacology.com. Accessed June 11, 2022.
- IBM Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/ (cited: June 13th 2022).
- Sofosbuvir (Sovaldi®) package insert. Gilead Sciences, Inc., Updated 5 March 2020.
- Ombitasvir, paritaprevir, and ritonavir tablets; dasabuvir tablets (Viekira Pak®) package insert. AbbVie Inc., November 2017.
- Ledipasvir and sofosbuvir (Harvoni®) package insert. Gilead Sciences, Inc., Updated 5 March 2020.
- Elbasvir/grazoprevir (Zepatier®) package insert. Merck & CO., Inc., Updated 19 December 2021.
- Sofosbuvir/velpatasvir (Epclusa®) package insert. Gilead Sciences, Inc., Updated 27 April 2022.
- Sofosbuvir/velpatasvir/voxilaprevir (Vosevi®) package insert. Gilead Sciences, Inc., Updated 15 November 2019.
- Glecaprevir/pibrentasvir (Mavyret™) package insert. AbbVie Inc., Updated 28 September 2021.
- Ribavirin (Rebetol®) package insert. Merck & Co., Inc., March 2022.
- AASLD-IDSA. Recommendations for testing, managing, and treating hepatitis C. http://www.hcvguidelines.org. Accessed 28 June 2022.
- Hepatitis C guidance 2018 update: AASLD-IDSA recommendations for testing, managing, and treating hepatitis C virus infection. Clinical Infectious Diseases 2018; 67(10): 1477-92.
Histamine H2 - Receptor Antagonists
Histamine H2 - Receptor Antagonists - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 23, 2021
- May 2019
- Dec. 2016
- March 2015
- June 2013
- Nov. 2011
- Sept. 2011
- Sept. 2009
- June 2009
- Dec. 2005
- Nov. 2003
- Oct. 2002.
- Initially developed
- Dec. 2001
1. Dosage
Histamine H2-receptor antagonists (H2RAs) are FDA-approved for use in gastric ulcer, duodenal ulcer, gastroesophageal reflux disease (GERD), esophagitis, hypersecretory conditions, and non-ulcer indigestion/heartburn.
In April 2020, the Food and Drug Administration requested that manufacturers remove all prescription and over-the-counter (OTC) formulations of ranitidine from the market. The request for removal was precipitated by the discovery of N-nitrosodimethylamine (NDMA), a probable human carcinogen, in various ranitidine products. Zantac® is one of several trade names for ranitidine, and in June 2021, Sanofi Pharmaceuticals released Zantac 360°® as an OTC product. However, this new formulation contains famotidine rather than ranitidine.
1.1. Adults
The maximum adult H2RA daily doses when prescribed for acute and maintenance FDA-approved conditions are summarized in Table 1 and Table 2. Dosage regimens exceeding these maximum recommended values will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
cimetidine (generics) | 200 mg, 300 mg, 400 mg, 800 mg tablets; 300 mg/5 mL oral solution | duodenal ulcer | 1200 mg/day ^ |
gastric ulcer | 1200 mg/day | ||
gastroesophageal reflux disease (GERD) - nonerosive | 1600 mg/day | ||
heartburn | 400 mg/day | ||
hypersecretory conditions | 2400 mg/day | ||
famotidine (Pepcid, Zantac 360°, generics) | 10 mg, 20 mg, 40 mg tablets; 40 mg/5 mL oral suspension | duodenal ulcer | 40 mg/day |
erosive esophagitis (EE) | 80 mg/day | ||
gastric ulcer | 40 mg/day | ||
GERD - nonerosive | 40 mg/day | ||
heartburn | 40 mg/day | ||
hypersecretory conditions | 640 mg/day | ||
nizatidine (generics) | 150 mg, 300 mg capsules; 15 mg/mL oral solution | duodenal ulcer | 300 mg/day in single or divided doses |
gastric ulcer | 300 mg/day in single or divided doses | ||
GERD - nonerosive | 300 mg/day in single or divided doses |
Legend:
- ^ Patients who are heavy smokers with duodenal ulcers greater than 1 cm may benefit from cimetidine 1600 mg at bedtime.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
cimetidine (generics) | 200 mg, 300 mg, 400 mg, 800 mg tablets; 300 mg/5 mL oral solution | duodenal ulcer | 400 mg/day |
hypersecretory conditions | 2400 mg/day | ||
famotidine (Pepcid®, generics) | 10 mg, 20 mg, 40 mg tablets; 40 mg/5 mL oral suspension | duodenal ulcer | 20 mg/day |
hypersecretory conditions | 640 mg/day | ||
nizatidine (generics) | 150 mg, 300 mg capsules; 15 mg/mL oral solution | duodenal ulcer | 150 mg/day at bedtime |
Current American College of Gastroenterology guidelines recommend the use of a proton pump inhibitor over H2RAs for Helicobacter pylori treatment regimens13.
Currently, famotidine is available as a combination product with ibuprofen, and it is marketed under the trade name Duexis®. Duexis® is FDA approved for the prophylaxis against upper gastrointestinal ulcers in adult patients with osteoarthritis or rheumatoid arthritis.14 Dosing for this agent is provided in Table 3.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
famotidine/ ibuprofen (Duexis®, generics) | 26.6 mg/ 800 mg oral tablets | gastric ulcer prophylaxis in osteoarthritis or rheumatoid arthritis | 79.8 mg / 2400 mg/day in three divided doses |
1.2. Pediatrics
Maximum recommended pediatric H2RA daily doses for acute and maintenance therapy are summarized in Table 4. Dosages exceeding these recommendations will be reviewed.
Drug Name | Patient Characteristics | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
cimetidine (generics) | Greater than or equal to 16 years of age | duodenal ulcer | 1200 mg/day ^ |
Greater than or equal to 16 years of age | gastric ulcer | 1200 mg/day | |
Greater than or equal to 16 years of age | gastroesophageal reflux disease (GERD) - nonerosive | 1600 mg/day | |
Greater than or equal to 12 years of age | heartburn | 400 mg/day | |
Greater than or equal to 16 years of age | hypersecretory conditions | 2400 mg/day | |
famotidine (Pepcid®, generics) | 1 to 17 years of age | duodenal ulcer | tablet: 40 mg/day* suspension: 40 mg/day |
1 to 17 years of age | erosive esophagitis (EE) | tablet: 80 mg/day* suspension: 80 mg/day |
|
1 to 17 years of age | gastric ulcer | tablet: 40 mg/ day* suspension: 40 mg/day |
|
1 to 16 years of age | GERD - nonerosive | tablet: 40 mg/day* suspension: 80 mg/day |
|
3 months to 1 year of age | GERD - nonerosive | suspension: 1 mg/kg twice daily (maximum of 40 mg daily) | |
Less than 3 months of age | GERD - nonerosive | suspension: 1 mg/kg once daily | |
famotidine (Pepcid®, Zantac 360°, generics) | Greater than or equal to 12 years of age | heartburn | 40 mg/day |
nizatidine (generics) | Greater than or equal to 12 years of age | EE | 300 mg/day in single or divided doses |
Greater than or equal to 12 years of age | GERD - nonerosive | 300 mg/day in single or divided doses |
Legend:
- ^ Patients who are heavy smokers with duodenal ulcers greater than 1 cm may benefit from cimetidine 1600 mg at bedtime
- * dosing for pediatric patients weighing greater than or equal to 40 kg
Drug Name | Patient Characteristics | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
cimetidine (generics) | Greater than or equal to 16 years of age | duodenal ulcer | 400 mg at bedtime |
Greater than or equal to 16 years of age | hypersecretory conditions | 2400 mg/day |
1.3. Dosage in Renal Impairment
H2RAs are primarily renally excreted. Dosage modifications for H2RA use in renal impairment are summarized in Table 6.
Drug Name | Dosage Adjustments in Renal Impairment |
---|---|
cimetidine |
|
famotidine |
|
nizatidine |
active treatment:
maintenance therapy:
|
2. Duration of Therapy
Adult and Pediatric Patients
Clinical trials document a maximum treatment duration of 56 days (eight weeks) for anti-ulcer therapy in treating acute duodenal and gastric ulcers. In pediatric patients, an 8-week maximum GERD acute treatment duration is recommended. H2RA treatment regimens at acute dosage levels lasting longer than four months will be reviewed.
When used for nonulcer indigestion/heartburn, H2RA treatment duration should not exceed 14 days at the maximum dose, unless directed by a physician.
Maintenance therapy, at recommended daily maintenance doses (Tables 2, 3, and 5), may be continued indefinitely based on patient need.
H2RAs may be used in conjunction with PPIs in GERD patients experiencing nocturnal breakthrough symptoms.
3. Duplicative Therapy
The current literature does not support the combination of two or more H2RAs. Therefore, concurrent use of this combination will be reviewed as there is no clinical evidence to suggest that adjunctive administration improves outcomes.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Table 7 summarizes major drug-drug interactions considered clinically relevant for H2RAs. Only those drug-drug interactions identified as severe or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
cimetidine | clopidogrel (Plavix®) | co-administration may result in decreased clopidogrel active metabolite levels, platelet inhibition, and clopidogrel efficacy; clopidogrel requires metabolism through CYP2C19 to active metabolite and cimetidine is CYP2C19 inhibitor |
cimetidine-clopidogrel combination should be avoided; H2RA alternatives (e.g., famotidine, ranitidine) that are not CYP2C19 inhibitors can be substituted for cimetidine |
major (CP) |
cimetidine | dofetilide (Tikosyn®) | concurrent use may potentially increase dofetilide serum levels/ enhance pharmacologic effects (e.g., torsades de pointes) as dofetilide metabolized by CYP3A4, eliminated through renal and hepatic mechanisms; cimetidine inhibits dofetilide clearance through interference with active tubular secretion and moderate CYP3A4 inhibition | dofetilide manufacturer states that concurrent administration of dofetilide and cimetidine is contraindicated; medications without effect on dofetilide pharmacokinetics (e.g., omeprazole, ranitidine, antacids) are potential alternatives to cimetidine | severe (CP) |
cimetidine | theophylline | adjunctive use may cause theophylline toxicity as cimetidine inhibits theophylline hepatic metabolism | adjunctive use possible if proper monitoring and/or dosage adjustments are made; order in which therapy initiated important - adding theophylline to existing cimetidine drug regimen can be safe as theophylline dosage titrated to acceptable serum concentrations, but adding cimetidine to existing theophylline regimen may enhance theophylline pharmacologic/ adverse effects; other available H2RAs do not significantly interact with theophylline and may be appropriate alternatives for cimetidine | major (CP) |
cimetidine | warfarin | combined use may result in increased INR and moderate to severe bleeding in some patients as cimetidine stereoselectively inhibits hepatic metabolism of warfarin R-isomer | adjunctive use possible if proper monitoring and/or dosage adjustments are made; order in which therapy is initiated is important - adding warfarin to existing cimetidine drug regimen can be safe as warfarin dosage titrated to acceptable monitoring parameter (e.g., INR), but adding cimetidine to existing warfarin regimen may enhance warfarin-induced hypoprothrombinemic response; other H2RAs do not significantly interact with warfarin - may be appropriate alternatives for cimetidine | major (CP) |
H2RAs | atazanavir (Reyataz®) | concurrent use may cause reduced atazanavir efficacy and increased resistance, as increased gastric pH with H2RAs causes decreased atazanavir solubility/ absorption/plasma levels | administer atazanavir either with and/or at least 10 hours after H2RA dose and monitor for decreased efficacy/increased resistance | major (CP) |
H2RAs | select azole antifungals (itraconazole (Sporanox®), ketoconazole, posaconazole (Noxafil®) | combined use may result in reduced azole antifungal bioavailability, decreased maximum azole antifungal serum levels, and attenuated azole antifungal pharmacologic effects, as H2RAs increase gastric pH and azole antifungal oral absorption is dependent on acidic environment | posaconazole manufacturer recommends avoiding the posaconazole-cimetidine drug combination unless benefits outweigh risks; if H2RA-azole antifungal combination necessary, monitor patients carefully for reduced antifungal activity | major (CP) |
H2RAs | drugs pH- dependent for solubility (e.g., dasatinib- Sprycel®; erlotinib – Tarceva®) | adjunctive administration for extended duration may result in reduced exposure and serum levels in select medications dependent on acidic gastric pH for solubility and absorption | combined use not recommended; alternative acid suppressives (e.g., antacids) should be administered 2 hours before or 2 hours after pH-dependent medication for optimal efficacy | major (CP) |
H2RAs | delavirdine (Rescriptor®) | combined use for extended treatment duration may result in reduced delavirdine absorption, decreased delavirdine serum levels, and attenuated delavirdine efficacy as delavirdine is dependent on an acidic gastric pH for absorption; separating drug doses may not improve delavirdine absorption as H2RAs affect gastric pH for prolonged time | concomitant use not recommended; antacids may be alternative acid suppressive therapy, with antacid and delavirdine doses separated by at least one hour | major (CP) |
Legend:
- *CP = Clinical Pharmacology
- H2RAs = histamine (H2) receptor antagonists
- INR = International Normalized Ratio
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: June 20, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed June 20, 2023.
- Cimetidine film coated oral tablets package insert. Mylan Pharmaceuticals, Inc., July 2019.
- Cimetidine hydrochloride oral solution package insert. Pharmaceutical Associates, Inc., June 2022.
- Famotidine film coated oral tablets package insert. Camber Pharmaceuticals, Inc., November 2021.
- Famotidine powder for oral suspension package insert. Northstar Rx, LLC., June 2021.
- Zantac 360°® (famotidine) film coated oral tablets package insert. Chattem, Inc., May 2022.
- Pepcid AC® Maximum Strength (famotidine) film coated oral tablets package insert. Johnson & Johnson Consumer, Inc., April 2023.
- Nizatidine oral capsule package insert. Glenmark Pharmaceuticals, Inc., December 2018.
- Nizatidine oral solution package isnert. Amneal Pharmaceuticals, LLC., December 2022.
- United States Food and Drug Administration. FDA News Release: FDA requests removal of all ranitidine products (Zantac) from the market. (April 1, 2021). Available at: https://www.fda.gov/news-events/press-announcements/fda-requests-removal-all-ranitidine-products-zantac-market. Accessed June 20, 2023.
- Famotidine (Zantac 360°®) oral tablets. Sanofi Pharmaceuticals. Available at: https://www.zantacotc.com/en-us/heartburn-medicine/maximum-strength/. Accessed June 20, 2023.
- Chey WD, Leontiadis GI, Howden CW, Moss SF. ACG clinical guideline: treatment of Helicobacter pylori infection. Am J Gastroenterol. 2017;112:212-38.
- Duexis® (ibuprofen/ famotidine) oral tablet package insert. Horizon Therapeutics USA, Inc., June 2021.
Hydrocodone Bitartrate/Hydrocodone Polistirex
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Jan. 2022; Nov. 2019; Nov. 2017; Dec. 2016; Oct. 2014; Feb. 2013; June 2011; Jan. 2009; March 2003; April 2002; March 2001; March 2000; Feb. 1999; Feb. 1998; March 1997; Sept. 1995.
- Initially developed
- April 1994
1. Dosage
In August 2014, the Drug Enforcement Administration published a final ruling to reschedule hydrocodone combination products from Schedule III to Schedule II due to their high potential of abuse. Beginning October 6, 2014, all hydrocodone combination products will be Schedule II. Single-entity hydrocodone products were already classified as Schedule II1.
Hydrocodone bitartrate, as combination therapy, is FDA-approved as an opioid antitussive and analgesic used for the relief of cough and moderate to moderately severe pain2-7. Hydrocodone bitartrate is available in fixed combinations with non-opiate drugs (e.g., acetaminophen, acetylsalicylic acid, chlorpheniramine, guaifenesin, ibuprofen, phenylephrine, and pseudoephedrine)2,3,6,7. This drug should be given in the smallest effective dose and as infrequently as possible to minimize the development of tolerance and physical dependence. Hydrocodone bitartrate is available in the United States as a single entity, extended-release capsule (Zohydro® ER), formulated with abuse-deterrent beads .2,3,8. This hydrocodone product is FDA-approved for managing pain requiring daily, long-term, around-the-clock opiate therapy not responsive to other treatment options. Hydrocodone bitartrate extended-release tablets with abuse deterrent properties (Hysingla® ER) have also been FDA-approved to manage severe pain requiring chronic, around-the-clock opiate treatment unresponsive to other treatment regimens 2,3,8,9.
The use of hydrocodone when prescribed by multiple physicians will be reviewed.
Hydrocodone/acetaminophen combination products containing greater than 325 mg of acetaminophen have been discontinued due to increased potential for liver toxicity.
1.1. Adults
Analgesic hydrocodone dosages should be determined based on pain severity and patient response/ tolerance. In individuals with severe pain or those who have become tolerant to the analgesic effects of hydrocodone, it may be necessary to exceed the usual dosage. Reduced hydrocodone dosages are indicated in high-risk patients and the elderly. The maximum daily dosage for the acetaminophen/ hydrocodone combination is restricted by the maximum acetaminophen dose of 4 g daily to limit the risk of hepatic damage and severe hypersensitivity reactions associated with acetaminophen use 2-4.
Hydrocodone exerts antitussive effects by directly acting on receptors in the cough center at dosages lower than those required for analgesia 2,3,6,7.
Recommended adult hydrocodone dosages as monotherapy and combination therapy are summarized in Tables 12,3,8,9 and 22-7,10. Dosages exceeding these recommendations will be reviewed.
Table 1: Recommended Adult Hydrocodone Dosages: Monotherapy
Drug/Indication | Dosage Forms/Strengths | Usual Dosage Regimen | Maximum Recommended Dose |
---|---|---|---|
Analgesic hydrocodone extended-release capsule (Zohydro® ER, generics) | 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg extended-release, abuse-deterrent capsules | 20 mg to 100 mg every 12 hours | maximum dose not defined; doses should be titrated per patient to maximize analgesia and minimize adverse drug reactions |
Analgesic hydrocodone extended-release tablet (Hysingla® ER, generics) | 20 mg, 30 mg, 40 mg, 60 mg, 80 mg, 100 mg, 120 mg extended-release, abuse-deterrent tablets | 20 mg to 120 mg every 24 hours | maximum dose not defined; doses should be titrated per patient to maximize analgesia and minimize adverse drug reactions |
Table 2: Recommended Adult Hydrocodone Dosages: Combination Therapy
Drug/Indication | Dosage Forms/Strengths | Usual Dosage Regimen | Maximum Recommended Dose |
---|---|---|---|
Analgesic hydrocodone bitartrate/ acetaminophen (Lortab®, Norco®, generics) | 5 mg/300 mg, 7.5 mg/300 mg, 10 mg/300 mg, 2.5 mg/325 mg, 5 mg/325 mg, 7.5 mg/325 mg, 10 mg/325 mg tablets; 7.5 mg/325 mg/15 ml or 10 mg/325 mg/15 ml solution; 10 mg/300 mg/15 ml elixir | 2.5-10 mg every 4-6 hours as needed | 60 mg/4000 mg daily* |
Analgesic hydrocodone bitartrate/ ibuprofen (Vicoprofen®, Ibudone®, Reprexain®, generics) | 2.5 mg/200 mg, 5 mg/200 mg, 7.5 mg/200 mg, 10 mg/200 mg tablets | 2.5-10 mg every 4-6 hours as needed | 5 tablets per day [maximum hydrocodone dose (10mg/200 mg): 50 mg daily]** |
Antitussive hydrocodone bitartrate/homatropine (Hydromet®, generics) | 5 mg/1.5 mg/5ml solution or 5 mg/1.5 mg tablet | 5 mg every 4-6 hours as needed | 30 mg daily |
Antitussive hydrocodone polistirex/chlorpheniramine polistirex (TussiCaps®) | 10 mg/ 8 mg extended-release capsules | 1 capsule every 12 hours | 20 mg/16 mg every 24 hours |
Antitussive hydrocodone polistirex/chlorpheniramine polistirex (Tussionex® Pennkinetic®, generics) | 10 mg/8 mg+/5 ml extended-release oral suspension | 10 mg/8 mg+ every 12 hours | 20 mg/16 mg+ daily |
Legend:
- *dosage limit based on maximum acetaminophen daily dose; varies by product
- **short-term use (less than 10 days) recommended
- +dosed as hydrocodone bitartrate and chlorpheniramine maleate
1.2. Pediatrics
Prior to 2018, Hydrocodone was not FDA-approved for use as an antitussive in pediatric patients younger than 6 years of age as safety and efficacy have not been established. In January 2018 the U.S. Food and Drug Administration changed the labeling to indicate that opioid cough and cold medicines containing codeine or hydrocodone are no longer indicated for patients less than 18 years of age.11 For analgesia, safety and efficacy of the hydrocodone/acetaminophen combination have not been established in children younger than 2 years of age, while the hydrocodone/ibuprofen combination is not indicated for use in children younger than 16 years of age due to lack of safety and efficacy data.2-5 The hydrocodone single-entity products, Zohydro® ER and Hysingla® ER are not FDA-approved in the pediatric population (less than 18 years of age) as safety and efficacy in this age group have not been established .2,3,8,9.
Analgesic hydrocodone dosages should be determined based on pain severity and patient response/ tolerance. In individuals with severe pain or those who have become tolerant to the analgesic effects of hydrocodone, it may be necessary to exceed the usual dosage. Reduced hydrocodone dosages are indicated in very young patients. Like adult patients, the maximum daily dosage for the acetaminophen/ hydrocodone combination is restricted by the maximum acetaminophen dose (as determined by age and weight – see Table 3) to limit the risk of hepatic damage and severe hypersensitivity reactions associated with acetaminophen use 2-10.
Recommended pediatric hydrocodone dosages as combination therapy are summarized in Table 32-5 . Dosages exceeding these recommendations will be reviewed.
Table 3: Recommended Pediatric Hydrocodone Dosages: Combination Therapy
Drug/Indication | Usual Dosage Regimen | Maximum Recommended Dose |
---|---|---|
Analgesic hydrocodone bitartrate/acetaminophen (APAP) (Lortab®, Norco®, generics) |
|
|
Analgesic hydrocodone bitartrate/ibuprofen (Vicoprofen®, Ibudone®, Reprexain®, generics) | 16 years and older: 2.5-10 mg/200 mg every 4-6 hours as needed | 5 tablets daily** |
Legend:
- +APAP = acetaminophen
- *dosage limit based on maximum acetaminophen daily dose
- **short-term use (less than 10 days) recommended
1.3. Opioid Reversal Agents
Naloxone is an opioid receptor antagonist that is FDA approved for reversal of opioid-induced respiratory and central nervous system depression. Naloxone is supplied as a nasal spray marketed as Narcan® 4 mg/0.1 mL nasal spray, Kloxxado® 8 mg/ 0.1 mL nasal spray, Evzio® 0.4 mg/ 0.4 mL auto-injector solution for injection, LifEMS Naloxone® 2 mg/ 2 mL solution for injection, and generic formulations of the solution for injection are available12-15.
In July 2020, the U.S. Food and Drug Administration made the recommendations that healthcare professionals should discuss the availability of naloxone products and consider prescribing naloxone to patients who are prescribed opioid pain relievers and are at increased risk of opioid overdose. Patients at risk of opioid overdose include patients who are co-prescribed benzodiazepines or other drugs that depress the central nervous system, patients with a history of opioid use disorder (OUD), or who have experienced a previous opioid overdose. Healthcare professionals should also consider prescribing naloxone to patients who have other household members, including children, or other close contacts at risk for accidental ingestion or opioid overdose.16 In 2016, the state of Texas, in association with the Texas Pharmacy Association, obtained a physician-signed standing order that allows pharmacists to dispense naloxone products to patients after completing Texas-accredited training17.
2. Duration of Therapy
When used as an analgesic, there is no basis for limiting hydrocodone therapy duration as hydrocodone may be utilized to manage chronic painful conditions as well as acute pain events. As an antitussive, hydrocodone is prescribed for a limited duration to manage cough and upper respiratory symptoms associated with the common cold or allergies in adults and pediatric patients 6 years of age and older. In isolated cases, hydrocodone may be prescribed for an extended time period in those adult patients requiring nonspecific therapy for a chronic, nonproductive cough, such as advanced cancer 18,19. In all patients, the smallest effective hydrocodone dose should be administered as infrequently as possible to minimize the development of tolerance and physical dependence2-10.
3. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for hydrocodone are summarized in Table 42-10, 20. Only those drug-drug interactions classified as clinical significance level 1/contraindicated or those considered life threatening which have not yet been classified will be reviewed.
Table 4: Hydrocodone Drug-Drug Interactions
Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|
anticholinergics (e.g., antidiarrheals) | co-administration may lead increased risk of urination retention, severe constipation, including paralytic ileus, especially with chronic use, and CNS depression due to additive anticholinergic effects | observe for chronic constipation, urinary retention, and CNS depression; adjust doses and/or discontinue therapy as needed | 2-major (CP) |
CYP3A4 inducers (e.g., rifampin, barbiturates) | adjunctive use may result in decreased hydrocodone plasma levels/reduced therapeutic effects, including withdrawal, as hydrocodone is CYP3A4 substrate | monitor for effective therapeutic effects; modify doses as necessary | major (DrugReax) 3-moderate (CP) |
CYP3A4 inhibitors | concurrent administration with CY3A4 inhibitors may result in increased hydrocodone serum levels and the potential for enhanced pharmacologic/ adverse effects through inhibition of CYP3A4-mediated hydrocodone metabolism | monitor for effective analgesia and signs/symptoms of adverse effects (e.g., enhanced sedation, respiratory depression); modify doses as necessary | major (DrugReax) 2-major (CP) |
gabapentin | potential for decreased hydrocodone peak concentrations and AUC with concomitant gabapentin-hydrocodone administration in dose-dependent fashion; minor increases in gabapentin AUC | observe patients for decreased hydrocodone efficacy or additive drowsiness | minor (DrugReax) 3-moderate (CP) |
monoamine oxidase inhibitors (MAOIs) | combined administration may result in severe, unpredictable additive effects | although no specific adverse interactions have been reported with the hydrocodone-MAOI combination, hydrocodone should not be administered in patients who have received MAOIs within 14 days | major (DrugReax) 2-major (CP) |
opiate agonist/ antagonists (OAAs) (e.g., buprenorphine, pentazocine) | concomitant administration may result in partial blockade of hydrocodone pharmacologic effects and may precipitate a withdrawal syndrome in some patients requiring chronic hydrocodone therapy; antagonist effects are more likely to occur when OAAs used concurrently with low to moderate doses of a pure opioid agonist; adjunctive therapy may be required in some instances, which may result in additive CNS depressant, respiratory, and hypotensive effects | patients requiring concurrent therapy with hydrocodone and a mixed OAA should be monitored for enhanced or attenuated pharmacologic effects, which may necessitate hydrocodone dosage adjustments and/or pharmacotherapy modifications | major (DrugReax) 2-major (CP) |
opiate agonists (OAs) | concurrent administration of pure OAs and narcotic analgesics like hydrocodone, or administration of OAs within 7 to 10 days of narcotic analgesic therapy may induce an acute abstinence syndrome | unless clinically significant respiratory depression is present, OAs should not be administered concurrently with hydrocodone | contraindicated (DrugReax) 2-major (CP) |
Legend:
- *CP = Clinical Pharmacology
- AUC = area under the curve
- CNS = central nervous system
4. References
- Department of Justice. Drug Enforcement Administration. Schedules of controlled substances: rescheduling of hydrocodone combination products from schedule III to schedule II. Fed Regist. 2014;79(163):49661-82.
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed December 7th, 2021.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2021. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed December 7th, 2021.
- Hydrocodone bitartrate/ acetaminophen oral tablets package insert. H.J. Harkins Company, Inc. September 2018.
- Hydrocodone bitartrate/ ibuprofen oral tablets package insert. Amneal Pharmaceuticals of New York, LLC, March 2021.
- Hydrocodone polistirex/chlorpheniramine polistirex extended-release suspension (Tussionex® Pennkinetic®) package insert. UCB, Inc., June 2018.
- Hydrocodone polistirex/chlorpheniramine polistirex extended-release capsules (TussiCaps®) package insert. Valeant Pharmaceuticals North America LLC, March 2018.
- Hydrocodone bitartrate extended-release capsules (Zohydro® ER) package insert. Currax Pharmaceuticals LLC, March 2021.
- Hydrocodone bitartrate extended-release tablets (Hysingla® ER) package insert. Purdue Pharma LLP, March 2021.
- Hydrocodone bitartrate/ homatropine methylbromide (Hydromet®) oral solution package insert. Actavis Pharma, Inc., August 2020.
- U.S. Food and Drug Administration FDA News Release. FDA acts to protect kids from serious risks of opioid ingredients contained in some prescription cough and cold products by revising labeling to limit pediatric use. January 2018.
- Naloxone hydrochloride (Narcan®) 4 mg/ 0.1 mL nasal spray package insert. Emergent Devices Inc., March 25, 2021.
- Naloxone hydrochloride (Kloxxado®) 8 mg/ 0.1 mL nasal spray package insert. Hikma Specialty USA Inc., April 2021.
- Naloxone hydrochloride (Evzio®) 0.4 mg/ 0.4 mL pre-filled syringe autoinjector package insert. HF Acquisition Co LLC, DBA HealthFirst, February 2020.
- Naloxone hydrochloride (LifEMS®) 2 mg/ 2 mL solution for injection convenience kit package insert. Lifsa Drugs LLC, November 2020.
- U.S. Food and Drug Administration. FDA recommends health care professionals discuss naloxone with all patients when prescribing opioid pain relievers or medicines to treat opioid use disorder. FDA Drug Safety Communication. Published online July 23, 2020. Available at: https://www.fda.gov/drugs/drug-safety-and-availability/fda-recommends-health-care-professionals-discuss-naloxone-all-patients-when-prescribing-opioid-pain. Accessed November 19th, 2021.
- Texas Pharmacy Association. Texas pharmacist naloxone standing order application. October 2016. Available at: https://www.texaspharmacy.org/page/TXPHARMNALOX. Accessed November 19th, 2021.
- Homsi J, Walsh D, Nelson KA, et al. A phase II study of hydrocodone for cough in advanced cancer. Am J Hospice Palliat Med. 2002;19(1):49-56.
- Estfan B, LeGrand S. Management of cough in advanced cancer. J Support Oncol. 2004;2(6):523-7.
- Armstrong SC, Cozza KL. Pharmacokinetic drug interactions of morphine, codeine, and their derivatives: theory and clinical reality, part II. Psychosomatics. 2003;44:515-20.
Hydroxy-Methylglutaryl Coenzyme A Reductase Inhibitors
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 2022, March 2020; March 2018; March 2017; Dec. 2014; March 2013; April 2011; March 2011; Nov. 2008; Sept. 2008; July 2008; March 2008; Sept. 2001; Sept. 2000; Aug. 2000; Nov. 1999; Oct. 1999; Sept. 1998; Sept. 1997; Oct. 1996.
- Initially developed
- Nov. 1994
1. Dosage
1.1. Adults
HMG-CoA reductase inhibitors, or statins, are lipid-lowering agents that competitively inhibit HMG-CoA reductase, the enzyme that catalyzes cholesterol biosynthesis. Inhibiting this enzyme results in decreases in total cholesterol, low density lipoprotein cholesterol (LDL-C), triglycerides (TG) and apoprotein B (Apo B), increases in high-density lipoprotein cholesterol (HDL-C), as well as increases in the number of LDL receptors on hepatic and extrahepatic tissues. Clinical and epidemiologic studies have documented that low HDL-C, high LDL-C and elevated TG augment atherosclerosis development and are risk factors for cardiovascular disease, while higher HDL-C levels and lower LDL-C concentrations are associated with reduced cardiovascular risk1-14.
Statins are FDA-approved to manage hyperlipidemia (including hypercholesterolemia, mixed dyslipidemia, hypertriglyceridemia, and primary dysbetalipoproteinemia) in adults, treat homozygous familial hypercholesterolemia in adults, reduce the risk of coronary heart disease mortality and cardiovascular events in patients at high risk for coronary events, slow the progression of coronary atherosclerosis in patients with coronary artery disease by reducing total cholesterol and LDL-C levels, provide primary prevention of coronary artery disease in patients with risk factors for coronary artery disease but without symptomatic cardiovascular disease, promote secondary prevention of coronary events in patients with cardiovascular disease, and treat adolescents with heterozygous familial hypercholesterolemia unresponsive to diet therapy1-14.
Statin combination therapies are FDA-approved to manage primary hyperlipidemia/mixed dyslipidemia and homozygous familial hypercholesterolemia (Vytorin®) when monotherapy is deemed inadequate. Caduet® is FDA-approved in those patients requiring both amlodipine and atorvastatin1,2,15,16. In 2021 the combination product Roszet® (ezetimibe/ rosuvastatin) was approved for the management of homozygous familial hypercholesterolemia alone or in combination with other LDL-C lowering therapies and primary nonfamilial hyperlipidemia1,2,17.
Higher statin doses may be necessary in patients who respond poorly to initial prescribed amounts. Doses may be escalated incrementally every four weeks at minimum, based on patient need and tolerance, to the maximum recommended dose. However, the FDA now recommends limiting use of the highest simvastatin dose (80 mg) to only those patients who have been taking the dose for 12 months or more without evidence of myopathy, due to greater risks for muscle injury compared to lower simvastatin doses or other statins1,2,11,12.
Recommended adult statin maintenance doses as mono- and combination therapy should not exceed the maximum doses listed in Tables 1 and 2.
Drug | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|
atorvastatin (Lipitor®, generic) | 10 mg, 20 mg, 40 mg, 80 mg tablets |
|
fluvastatin (generics, Lescol® XL, generics) | 20 mg, 40 mg capsules; 80 mg extended-release tablets |
|
lovastatin (generics) | 10 mg, 20 mg, 40 mg tablets |
|
lovastatin (Altoprev®) | 20 mg, 40 mg, 60 mg extended-release tablets |
|
pitavastatin calcium (Livalo®) | 1 mg, 2 mg, 4 mg tablets |
|
pitavastatin magnesium (Zypitamag®) | 1 mg, 2 mg, 4 mg tablets |
|
pravastatin (Pravachol®, generics) | 10 mg, 20 mg 40 mg, 80 mg tablets |
|
rosuvastatin (Crestor®, generics) | 5 mg, 10 mg, 20 mg, 40 mg tablets |
|
rosuvastatin (Ezallor Sprinkle®) | 5 mg, 10 mg, 20 mg, 40 mg sprinkle capsules |
|
simvastatin (Zocor®, FloLipid®, tablet generics) | 5 mg, 10 mg, 20 mg, 40 mg, 80 mg tablets; 20 mg/5 mL, 40 mg/5 mL suspension |
|
Drug | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|
amlodipine/atorvastatin (Caduet®, generics) | 2.5 mg/10 mg, 2.5 mg/20 mg, 2.5 mg/40 mg, 5 mg/10 mg, 5 mg/20 mg, 5 mg/40 mg, 5 mg/80 mg, 10 mg/10 mg, 10 mg/20 mg, 10 mg/40 mg, 10 mg/80 mg tablets |
|
ezetimibe/ rosuvastatin (Roszet®) | 10 mg/5 mg, 10 mg/ 10mg, 10 mg/20 mg, 10 mg/40 mg oral tablets |
|
ezetimibe/ simvastatin (Vytorin®, generics) | 10 mg/10 mg, 10 mg/20 mg, 10 mg/40 mg, 10 mg/80 mg tablets |
|
1.2. Pediatrics
HMG-CoA reductase inhibitors are FDA-approved for use as a dietary adjunct to reduce total cholesterol, LDL-C, TG, and Apo B in adolescent boys, and girls who are at least one-year post-menarche, (for pravastatin, children and adolescents 8-18 years of age regardless of menarchal status) with elevated LDL-C due to heterozygous familial hypercholesterolemia. Pitavastatin calcium (Livalo®) is FDA-approved for use in children/adolescents over 8 years of age as an adjunct to diet to manage heterozygous familial hypercholesterolemia by lowering total cholesterol, LDL-C, and apo B1,2,13. Rosuvastatin has expanded FDA approval for use in children as young as 8 years of age with heterozygous familial hypercholesterolemia, and has gained FDA approval for homozygous familial hypercholesterolemia in pediatric patients 7-17 years of age.1,2,10 Simvastatin oral suspension (FloLipid®) has been approved for use in conjunction with diet to improve total cholesterol, LDL-C, and ApoB in pediatric patients 10-17 years (females at least one year post-menarche) with heterozygous familial hypercholesterolemia1,2,12. Safety and efficacy of pitavastatin magnesium (Zypitamag®) or rosuvastatin sprinkle capsules (Ezallor Sprinkle™) in pediatric patients have not been established1,2,13,14 . Safety and effectiveness of HMG-CoA reductase inhibitors in pre-menarchal girls or children younger than 10 years of age (for pravastatin and rosuvastatin in heterozygous familial hypercholesterolemia, younger than 8 years of age regardless of menarchal status; for rosuvastatin in homozygous familial hypercholesterolemia, younger than 7 years of age) have not been well established1,2,9,10.
Ezetemibe/simivastatin (Vytorin®) combination therapy has been effectively used to manage children and adolescents with heterozygous familial hypercholesterolemia 1,2,15. The amlodipine/atorvastatin (Caduet®) combination has not been FDA-approved for the pediatric population as safety and efficacy have not been established with this combination therapy1,2,16. The safety and efficacy of ezetimibe/ rosuvastatin (Roszet®) in children has not been established, and it is currently not FDA-approved in the pediatric population 1,2,17.
Maximum recommended doses for HMG-CoA reductase inhibitors as both monotherapy and combination therapy in pediatric patients are summarized in Tables 3 and 4.
Treatment Indication | Drug Name | Maximum Recommended Dosage |
---|---|---|
Heterozygous familial hypercholesterolemia | atorvastatin | 10-17 years of age: 20 mg once daily |
Heterozygous familial hypercholesterolemia | fluvastatin | 10-17 years of age: 80 mg daily, as single evening dose or two divided doses |
Heterozygous familial hypercholesterolemia | lovastatin (immediate-release only) | 10-17 years of age: 40 mg once daily with evening meal |
Heterozygous familial hypercholesterolemia | pitavastatin | Greater than 8 years to 17 years of age: 4 mg once daily |
Heterozygous familial hypercholesterolemia | pitavastatin | Greater than 8 years to 17 years of age: 4 mg once daily |
Heterozygous familial hypercholesterolemia | pravastatin |
8-13 years of age: 14-17 years of age: |
Heterozygous familial hypercholesterolemia | rosuvastatin (tablets only) |
8-9 years of age: 10-17 years of age: |
Homozygous familial hypercholesterolemia | rosuvastatin (tablets only) | 7-17 years of age: 20 mg once daily |
Heterozygous familial hypercholesterolemia | simvastatin | 10-17 years of age: 40 mg once daily in evening |
Treatment Indication | Drug Name | Maximum Recommended Dosage |
---|---|---|
Heterozygous familial hypercholesterolemia | ezetimibe/simvastatin | 10-17 years of age (females postmenarchal): 10 mg/40 mg once daily |
2. Duration of Therapy
There is no basis for limiting therapy duration for HMG-CoA reductase inhibitors as control of cholesterol and other coronary heart disease risk factors is a life-long process1-17.
3. Duplicative Therapy
The use of two or more HMG-CoA reductase inhibitors in combination is not justified. Additional therapeutic benefit is not realized when HMG-CoA reductase inhibitors are used concomitantly and may result in increased adverse reactions such as myopathy and rhabdomyolysis. Patients receiving multiple HMG-CoA reductase inhibitors concurrently will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered most significant for HMG-CoA reductase inhibitors are summarized in Table 4. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed:
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
HMGs | cyclosporine | co-administration may lead to increased HMG concentrations and potential for enhanced pharmacologic/ adverse effects (e.g., MYO, RHAB) due to inhibition of HMG metabolism (CYP3A4; OATP1B1) by cyclosporine (CYP3A4, OATP1B1 inhibitor) | avoid adjunctive therapy, if possible; if combined therapy necessary, monitor for signs/symptoms of MYO, RHAB; use lowest recommended HMG doses; fluvastatin may be alternative as metabolized by CYP2C9 and not affected by OATP1B1 | major, moderate (DrugReax) 2-major (CP) |
HMGs | fibric acid derivatives (e.g., fenofibrate, gemfibrozil) | adjunctive administration may elevate HMG serum levels, with increased risk of severe MYO, RHAB, due to inhibition of HMG metabolism (CYP2C8; OATP1B1) by gemfibrozil (CYP2C8, OATP1B1 inhibitor), or additive myopathy risk (fibrates) | avoid combination, if possible; if concurrent therapy necessary, use cautiously, closely monitor creatine kinase and observe for MYO, RHAB; use lowest recommended HMG doses | major (DrugReax) 2-major (CP) |
HMGs | protease inhibitors | adjunctive administration may increase HMG serum levels and elevate potential for enhanced pharmacologic/adverse effects (e.g., MYO, RHAB) due to CYP3A4 inhibition and other unknown mechanisms | avoid combination therapy, if possible; if combined therapy necessary, monitor for increased adverse effects (e.g., MYO, RHAB) and use lowest recommended HMG dose; may consider pravastatin, an HMG not metabolized by CYP3A4 | contraindicated, major, moderate (DrugReax) 1-severe, 2-major, 3-moderate (CP) |
Select HMGs | amiodarone | combined administration may increase risk of HMG adverse effects [e.g., myopathy (MYO), rhabdomyolysis (RHAB)] most likely due to inhibition of HMG metabolism (CYP3A4, CYP2C9) by amiodarone (CYP3A4, CYP2C9 inhibitor) | monitor for MYO, RHAB; use lowest recommended HMG doses; consider using HMG not metabolized by CYP3A4 or CYP2C9, such as pravastatin, if drug combination necessary | major, moderate (DrugReax) 2-major, 3-moderate (CP) |
Select HMGs | azole antifungals | combined administration may lead to increased HMG concentrations and potential for enhanced pharmacologic/adverse effects (e.g., MYO, RHAB) due to inhibition of HMG metabolism (CYP3A4) by azole antifungals (CYP3A4 inhibitor); fluvastatin with increased risk of adverse effects when prescribed with fluconazole, voriconazole (CYP2C9 inhibitors) | posaconazole-HMG combination is contraindicated due to increased risk of MYO/RHAB; avoid adjunctive therapy, if possible with other combinations; if combined therapy necessary, monitor for signs/symptoms of MYO, RHAB; may consider using HMG not metabolized by CYP3A4, CYP2C9 such as pravastatin | contraindicated, major (DrugReax) 1-severe, 2-major, 3-moderate (CP) |
Select HMGs | macrolide antibiotics | macrolides (CYP3A4, OATP1B1 inhibitors) prescribed with HMGs metabolized by CYP3A4 or OATP1B1 may increase HMG serum levels and elevate potential for enhanced pharmacologic/adverse effects (e.g., MYO, RHAB) | avoid macrolides with HMGs metabolized by CYP3A4, OATP1B1, if possible; pravastatin, rosuvastatin not metabolized by CYP3A4 and may be alternative HMGs; if combination necessary, monitor for MYO, RHAB | major (DrugReax) 1-severe, 2-major (CP) |
Select HMGs | other CYP3A4 inhibitors (e.g., diltiazem, imatinib, nefazodone, verapamil) | CYP3A4 inhibitors administered with HMGs metabolized by CYP3A4 may increase HMG serum levels and elevate potential for enhanced pharmacologic/ adverse effects (e.g., MYO, RHAB) | avoid CYP3A4 inhibitors with HMGs metabolized by CYP3A4, if possible; pravastatin, rosuvastatin not metabolized by CYP3A4 and may be alternative HMGs; if combination necessary, use lowest recommended dose and monitor for MYO, RHAB | contraindicated, major, moderate (DrugReax) 1-severe, 2-major, 3-moderate (CP) |
Select HMGs | select NNRT inhibitors (delavirdine, efavirenz) | combined administration of delavirdine (CYP3A4 inhibitor) with HMGs metabolized by CYP3A4 may increase HMG serum levels and elevate potential for enhanced pharmacologic/adverse effects (e.g., MYO, RHAB); alternately, concurrent administration of efavirenz (CYP3A4 inducer) with HMGs metabolized by CYP3A4 may decrease HMG serum levels and potentially decrease therapeutic efficacy | monitor for increased adverse effects (e.g., MYO, RHAB) or decreased HMG efficacy; may alter HMG dose or add other lipid-lowering therapy; consider alternative HMGs not metabolized by CYP3A4 | major, moderate (DrugReax) 1-severe, 2-major, 3-moderate (CP) |
Legend:
- *CP = Clinical Pharmacology
- HMG = HMG CoA reductase inhibitor
- MYO = myopathy
- NNRT = non-nucleoside reverse transcriptase
- RHAB = rhabdomyolysis
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: February 21, 2022).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed February 21, 2022.
- Atorvastatin tablets (Lipitor®) package insert. Parke-Davis Division of Pfizer, November 2021.
- Fluvastatin capsules package insert. Teva Pharmaceuticals USA, Inc., August 2020.
- Fluvastatin extended-release tablets (Lescol® XL) package insert. Novartis Pharmaceuticals Corporation, July 2021.
- Lovastatin immediate-release tablets package insert. Teva Pharmaceuticals USA, Inc., August 2020.
- Lovastatin extended-release tablets (Altoprev®) package insert. Covis Pharma US, Inc., December 2021.
- Pitavastatin calcium tablets (Livalo®) package insert. Kowa Pharmaceuticals America, Inc., May 2019.
- Pravastatin tablets (Pravachol®) package insert. Accord Healthcare Inc., May 2021.
- Rosuvastatin tablets (Crestor®) package insert. AstraZeneca, September 2020.
- Simvastatin tablets (Zocor®) package insert. Merck & Co., Inc., December 2020.
- Simvastatin oral suspension (FloLipid®) package insert. Salerno Pharmaceuticals, February 2022.
- Pitavastatin magnesium (Zypitamag™) package insert. Medicure Pharma, September 2020.
- Rosuvastatin sprinkle capsules (Ezallor Sprinkle™) package insert. Sun Pharmaceutical Industries, September 2020.
- Ezetimibe/simvastatin tablet (Vytorin®) package insert. Merck & Co., Inc., December 2020.
- Amlodipine/atorvastatin tablets (Caduet®) package insert. Pfizer, March 2021.
- Ezetimibe/ Rosuvastatin (Roszet®) package insert. Althera Pharmaceuticals, LLC. September 2021.
- Tobert JA, East C, Alivizatos PA, Grundy SM, Jones PH, Farmer JA. Rhabdomyolysis in patients receiving lovastatin after cardiac transplantation. N Engl J Med. 1988;318:47-8.
- Spach DH, Bauwens JE, Clark CD, Rhabdomyolysis associated with lovastatin and erythromycin use. West J Med. 1991;154:213-15.
- Pierce LR, Wysowski DK, Gross TP. Myopathy and rhabdomyolysis associated with lovastatin-gemfibrozil combination therapy. JAMA. 1990;264:71-5.
- Neuvonen PJ, Jalava KM. Itraconazole drastically increases plasma concentrations of lovastatin and lovastatin acid. Clin Pharmacol Ther. 1996;60:54-61.
- Neuvonen PJ. Niemi M. Backman JT. Drug interactions with lipid-lowering drugs: mechanisms and clinical relevance. Clin Pharmacol Ther. 2006;80:565-81.
- Bottorff MB. Statin safety and drug interactions: clinical implications. Am J Cardiol. 2006;97(8A):27C-31C.
- Armitage J. The safety of statins in clinical practice. Lancet. 2007;37:1781-90.
- Anonymous. Which statin, what dose? Drug Ther Bull. 2007;45:33-7.
- Neuvonen PJ, Niemi N, Backman JT. Drug interactions with lipid-lowering drugs: mechanisms and clinical relevance. Clin Pharmacol Ther. 2006;80:565-81.
- Shitara Y, Sugiyama Y. Pharmacokinetic and pharmacodynamic alterations of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors: drug–drug interactions and interindividual differences in transporter and metabolic enzyme functions. Pharmacol Ther. 2006;112:71-105.
- Dixit V, Hariparsad N, Li F, et al. Cytochrome P450 enzymes and transporters induced by anti-human immunodeficiency virus protease inhibitors in human hepatocytes: implications for predicting clinical drug interactions. Drug Metab Dispos. 2007;35:1853-9.
- Kiser JJ, Gerber JG, Predhomme JA, et al. Drug/drug interaction between loprenavir/ritonavir and rosuvastatin in healthy volunteers. J Acquir Immune Defic Syndr. 2008;47:570-8.
- Busti AJ, Bain AM, Hall RG II, et al. Effects of atazanavir/ritonavir or fosamprenavir/ritonavir on the pharmacokinetics of rosuvastatin. J Cardiovasc Pharmacol. 2008;51:605-10.
- Winston A, Boffito M. The management of HIV-1 protease inhibitor pharmacokinetic interactions. J Antimicrob Chemother. 2005;56:1-5.
Immune Globulins
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Vendor Drug Program formulary coverage.
- Revision history
- July 2022; June 2020
- Initially developed
- June 2018
1. Dosage
1.1. Adults
Immune globulins, solutions comprised primarily of human immunoglobulin (Ig) G with minute concentrations of IgA and IgM, are obtained from pooled plasma from a variety of donors to guarantee a diverse antibody collection with variable antigen-binding sites. Immune globulins work by providing adequate antibody concentrations against an extensive selection of different pathogens1,2 . Immune globulins are FDA-approved to manage primary and secondary immunodeficiencies, prevent infectious diseases, and treat other inflammatory and autoimmune disorders1-16. Hyperimmune globulins like cytomegalovirus immune globulin are prepared from pooled donor serum with high antibody titers to specific infectious organisms and are used to prevent or mitigate the targeted infection1-3. Immune globulins are administered by the intravenous or subcutaneous routes1-16. Maximum recommended dosage regimens in adult patients for available immune globulins and hyperimmune globulins are summarized in Tables 1 and 2.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
cytomegalovirus immune globulin, human (Cytogam®) | 50 mg/mL single-use vial (50 mL) | Prevention of cytomegalovirus disease in heart, kidney, lung, liver and pancreas transplant recipients |
|
immune globulin, human (Flebogamma® 5% DIF) | 0.5 g, 2.5 g, 5 g, 10 g, 20 g single-use vials | Primary Humoral immunodeficiency (PI) | 300 to 600 mg/kg as IV infusion every 3 to 4 weeks (maximum 5 mg/kg/min) |
immune globulin, human (Flebogamma® 10% DIF) | 5 g, 10 g, 20 g single-use vials | PI | 300 to 600 mg/kg as IV infusion every 3 to 4 weeks (maximum 8 mg/kg/min) |
Chronic primary immune thrombocytopenia | 1 g/kg as IV daily for 2 consecutive days (maximum 8 mg/ kg/ min) | ||
immune globulin, human (Gammagard Liquid®) | 1 g protein, 2.5 g protein, 5 g protein, 10 g protein, 20 g protein, 30 g protein (100 mg/mL) as single-use bottles | multifocal motor neuropathy | 0.5 to 2.4 g/kg/month as IV infusion based on clinical response (maximum 9 mg/kg/min) |
PI | 300 to 600 mg/kg as IV infusion every 3 to 4 weeks based on clinical response (maximum 8 mg/kg/min) | ||
immune globulin, human [Gammaked® 10% (sucrose-free)] | 1 g protein, 5 g protein, 10 g protein, 20 g protein, single-use vials | idiopathic thrombocytopenic purpura (ITP) | 2 g/kg in two divided doses (1 g/kg) over two consecutive days, or five divided doses (0.4 g/kg) over five consecutive days^ (maximum 8 mg/kg/min) |
chronic inflammatory demyelinating polyneuropathy (CIDP) | 2 g/kg as IV loading dose in divided doses over 2-4 consecutive days followed by 1 g/kg IV maintenance dose as single dose or two divided doses (0.5 g/kg) over two consecutive days every 3 weeks (maximum 8 mg/kg/min) | ||
immune globulin, human (Gamunex®-C) | 1 g protein, 2.5 g protein, 5 g protein, 10 g protein, 20 g protein, 40 g protein single use vials | CIDP | 2 g/kg as IV loading dose in divided doses over 2-4 consecutive days followed by 1 g/kg IV maintenance dose as single dose or two divided doses (0.5 g/kg) over two consecutive days every 3 weeks (maximum 8 mg/kg/min) |
ITP | 2 g/kg in two divided doses (1 g/kg) over two consecutive days, or five divided doses (0.4 g/kg) over five consecutive days^ (maximum 8 mg/kg/min) | ||
PI | 300 mg/kg to 600 mg/kg every 3-4 weeks (maximum 8 mg/kg/min) | ||
immune globulin, human (Octagam® 5%) | 1 g, 2.5 g, 5 g, 10 g, 25 g single use vials | PI | 300 to 600 mg/kg as IV infusion every 3 to 4 weeks (maximum 3.3 mg/kg/min) |
immune globulin, human (Octagam® 10%) | 2 g, 5 g, 10 g, 20 g, 30 g single use vials | chronic ITP | 2 g/kg IV as total dose, given as two 1 g/kg IV doses on 2 consecutive days (maximum 12 mg/kg/min) |
dermatomyositis | 2 g/kg IV divided in equal doses given over 2-5 consecutive days every 4 weeks (maximum 4 mg/kg/min) | ||
immune globulin, human (Privigen®) | 5 g, 10 g, 20 g, 40 g single use vials | CIDP | 2 g/kg as loading dose in divided doses over 2-5 consecutive days followed by 1 g/kg maintenance dose as single dose or two divided doses (0.5 g/kg) over two consecutive days every 3 weeks (maximum 8 mg/kg/min) |
chronic ITP | 1 g/kg IV daily for two consecutive days (maximum 4 mg/kg/min) | ||
PI | 200 to 800 mg/kg IV every 3 to 4 weeks; adjust dose based on clinical response and serum IgG trough levels (maximum 8 mg/kg/min) |
Legend:
- ^ if platelet counts return to normal after first 1 g/kg dose, the second 1g/kg dose does not need to be administered
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
immune globulin, human (Cutaquig®) | 165 mg/1 mL | Primary humoral immunodeficiency (PI) |
|
immune globulin, human (Cuvitru®) | 1 g, 2 g, 4 g, 8 g, 10 g single use vials | PI |
|
immune globulin, human (Gammagard Liquid®) | 1 g protein, 2.5 g protein, 5 g protein, 10 g protein, 20 g protein, 30 g protein (100 mg/mL) as single-use bottles | PI | begin one week after last IVIG infusion; dose based on previous IVIG dose in grams x 1.37 divided by number of weeks between doses; dosages based on clinical response and serum IgG trough levels^^ |
immune globulin, human [Gammaked® 10% (sucrose-free)] | 1 g protein, 5 g protein, 10 g protein, 20 g protein, single-use vials | PI | begin one week after last IVIG infusion; dose based on previous IVIG dose in grams x 1.37 divided by number of weeks between doses; dosages based on clinical response and serum IgG trough levels++ |
immune globulin, human (Gamunex®-C) | 1 g protein, 2.5 g protein, 5 g protein, 10 g protein, 20 g protein, 40 g protein single use vial | PI | SC dose based on previous IVIG dose in grams x 1.37 divided by number of weeks between doses; based on clinical response and serum IgG trough levels# |
immune globulin, human (Hizentra®) | 1 g, 2 g, 4 g, 10 g single use vials; 1 g, 2 g, 4 g, 10 g prefilled syringe | chronic inflammatory demyelinating polyneuropathy (CIDP) | begin 1 week after last IVIG infusion; 0.4 g/kg/week SC given in 1 or 2 sessions over 1 to 2 consecutive days |
PI | may be given after patient has received IVIG for at least 3 months; SC dose based on previous IVIG dose in grams divided by number of weeks between doses x 1.37 and administered weekly or every two weeks; based on clinical response and serum IgG trough levels@ | ||
immune globulin, human with recombinant human hyaluronidase (Hyqvia®) | 2.5 g, 5 g, 10 g, 20 g, 30 g single use vials | PI |
|
immune globulin, human (Xembify®) | 1 g, 2 g, 4 g, 10 g single use vials | PI | patients switching from previous IVIG treatment: divide the previous monthly IVIG dose in grams by the number of weeks between IVIG doses, then multiply by 1.37@@ |
Legend:
- ## consult Cutaquig® package insert for specific SC dosage requirements
- + consult Cuvitru® package insert for specific SC dosage requirements
- # consult Gamunex® - C package insert for specific SC dosage requirements
- @ consult Hizentra® package insert for specific SC dosage requirements
- ** Hyqvia® dose ramp-up requires graduated dose increase over 3 to 4 weeks to targeted dose
- ++ consult Gammaked® package insert for specific SC dosage requirements
- ^^ consult Gammagard Liquid® package insert for specific SC dosage requirements
- @@ consult Xembify® package insert for specific SC dosage requirements
1.2. Pediatrics
Select immune globulins are FDA-approved for use in pediatric patients to manage immune thrombocytopenic purpura and primary immunodeficiencies1-16. Pediatric safety and efficacy have not yet been established for Hyqvia®1,2,15 . Maximum recommended dosages for pediatric patients are summarized in Tables 3 and 4.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
immune globulin, human (Flebogamma® 5% DIF) | 0.5 g, 2.5 g, 5 g, 10 g, 20 g single-use vials | PI | 2 years to less than 18 years: 300 to 600 mg/kg as IV infusion every 3 to 4 weeks (maximum 5 mg/kg/min) |
immune globulin, human (Flebogamma® 10% DIF) | 5 g, 10 g, 20 g single-use vials | chronic primary immune thrombocytopenia | 2 years to less than 18 years: 1 g/kg as IV daily for 2 consecutive days (maximum 8 mg/ kg/ min) |
immune globulin, human (Gammagard Liquid®) | 1 g protein, 2.5 g protein, 5 g protein, 10 g protein, 20 g protein, 30 g protein (100 mg/mL) as single-use bottles | PI | 2 years to less than 18 years: 300 to 600 mg/kg as IV infusion every 3 to 4 weeks (maximum 8 mg/kg/min) |
immune globulin, human [Gammaked® 10% (sucrose-free)] | 1 g protein, 5 g protein, 10 g protein, 20 g protein, single-use vials | ITP | 2 g/kg in two divided doses (1 g/kg) over two consecutive days, or five divided doses (0.4 g/kg) over five consecutive days^ (maximum 8 mg/kg/min) |
PI | 2 years to less than 18 years: 300 to 600 mg/kg as IV infusion every 3 to 4 weeks. (maximum 8 mg/kg/min) | ||
immune globulin, human (Gamunex®-C) | 1 g protein, 2.5 g protein, 5 g protein, 10 g protein, 20 g protein, 40 g protein single-use vials | ITP | 2 g/kg in two divided doses (1 g/kg) over two consecutive days, or five divided doses (0.4 g/kg) over five consecutive days^ (maximum 8 mg/kg/min) |
PI | 2 years to less than 18 years: 300 mg/kg to 600 mg/kg every 3-4 weeks (maximum 8 mg/kg/min) | ||
immune globulin, human (Octagam® 5%) | 1 g, 2.5 g, 5 g, 10 g, 25 g single use vials | PI | 6 years to less than 18 years: 300 to 600 mg/kg as IV infusion every 3 to 4 weeks |
immune globulin, human (Privigen®) | 5 g, 10 g, 20 g, 40 g single use vials | chronic ITP | 15 years to less than 18 years: 1 g/kg IV daily for two consecutive days (maximum 4 mg/kg/min) |
PI | 3 years to less than 18 years: 200 to 800 mg/kg IV every 3 to 4 weeks; adjust dose based on clinical response and serum IgG trough levels (maximum 8 mg/kg/min) |
Legend:
- ^ if platelet counts return to normal after first 1 g/kg dose, the second 1g/kg dose does not need to be administered
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
immune globulin, human (Cutaquig®) | 1 g, 2 g, 4 g, 8 g single use vials | PI |
|
immune globulin, human (Cuvitru®) | 1 g, 2 g, 4 g, 8 g, 10 g single use vials | PI |
|
immune globulin, human (Gammagard Liquid®) | 1 g protein, 2.5 g protein, 5 g protein, 10 g protein, 20 g protein, 30 g protein (100 mg/mL) as single-use bottles | PI | 2 years to less than 18 years: SC dose based on previous IVIG dose x 1.37 divided by number of weeks between doses; dosage adjustments based on clinical response and serum IgG trough levels^ |
immune globulin, human [Gammaked® 10% (sucrose-free)] | 1 g protein, 5 g protein, 10 g protein, 20 g protein, single-use vials | PI | 2 years to less than 18 years: begin one week after last IVIG infusion; dose based on previous IVIG dose in grams x 1.37 divided by number of weeks between doses; dosages based on clinical response and serum IgG trough levels++ |
immune globulin, human (Gamunex®-C) | 1 g protein, 2.5 g protein, 5 g protein, 10 g protein, 20 g protein, 40 g protein single-use vials | PI | 2 years to less than 18 years: SC dose based on previous IVIG dose in grams x 1.37 divided by number of weeks between doses; based on clinical response and serum IgG trough levels# |
immune globulin, human (Hizentra®) | 1 g, 2 g, 4 g, 10 g single use vials; 1 g, 2 g, 4 g, 10 g prefilled syringe | PI | 2 years to less than 18 years: may be given after patient has received IVIG for at least 3 months; dose based on previous IVIG dose in grams divided by number of weeks between doses x 1.37 and administered weekly or every two weeks; based on clinical response and serum IgG trough levels@ |
immune globulin, human (Xembify®) | 1 g, 2 g, 4 g, 10 g single use vials | PI | 2 years to less than 18 years: for patients already receiving IVIG. Divide previous monthly IVIG dose in grams by the number of weeks between IVIG doses, then multiply by 1.37@@ |
Legend:
- ##consult Cutaquig® package insert for specific SC dosage requirements
- + consult Cuvitru® package insert for specific SC dosage requirements
- ^consult Gammagard Liquid® package insert for specific SC dosage requirements
- ++consult Gammaked® package insert for specific SC dosage requirements
- #consult Gamunex® - C package insert for specific SC dosage requirements
- @consult Hizentra® package insert for specific SC dosage requirements
- @@consult Xembify® package insert for specific SC dosage requirement
2. Duration of Therapy
Immune globulins, when used to manage primary immunodeficiency, may be continued indefinitely as primary immunodeficiency is a chronic, lifelong disease 1,2,4-9,11-16. Patients diagnosed with idiopathic thrombocytopenic purpura, an autoimmune disorder characterized by platelet destruction, may require immune globulin therapy to increase platelet counts. Immune globulin therapy is typically required for only 24-48 hours to stabilize platelet counts, but patients may require repeat courses of immune globulin therapy as ITP can be a chronic, lifelong condition1,2,5,7,8,10,11. Cytomegalovirus immune globulin (Cytogam®) is administered at an every 2 or 4-week dosing interval through week 16 following organ transplant1-3.
3. Duplicative Therapy
Concurrent administration of multiple immune globulins does not provide additional therapeutic benefit and is not recommended. However, adjunctive administration of an immune globulin and a hyperimmune globulin could potentially be necessary in certain circumstances. Patient profiles containing concomitant prescriptions for two or more immune globulin products will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. The following drug-drug interactions are considered clinically relevant for immune globulins. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Live/Live Attenuated Virus Vaccines1,2
(e.g., measles, mumps, rubella, varicella) [clinical significance level- major (DrugReax); 2-major (CP)]
Adjunctive administration of immune globulins with live/live attenuated virus vaccines may inhibit the immune response to the vaccination by passively transferring antibodies and diminishing the desired vaccine effect. Antibodies present in immune globulins may diminish the response to mumps, rubella, and varicella vaccines for up to 6 months, while the measles vaccine response may be compromised for up to one year or more. Do not administer live vaccines for at least three months after immune globulin administration. Immune globulin and the hyperimmune globulin, varicella zoster immune globulin, should not be administered concurrently with the live varicella zoster vaccine. There should be at least a five-month interval between immune globulin (including varicella zoster immune globulin) administration and live varicella vaccination. Immune globulin should not be administered for two months after live varicella vaccine administration unless the benefits of immune globulin administration outweigh the potential for reduced vaccine effects.
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc; 2022. Available at: http://www.clinicalpharmacology.com. Accessed June 23, 2022.
- IBM Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/ (cited: June 23, 2022.
- Cytomegalovirus immune globulin intravenous – human (Cytogam®) package insert. Saol Therapeutics. October 2020.
- Immune globulin intravenous 5% - human (Flebogamma® 5% DIF) package insert. Grifols, November 2019.
- Immune globulin intravenous 10% - human (Flebogamma® 10% DIF) package insert. Grifols, November 2019.
- Immune globulin infusion 10% solution – human (Gammagard Liquid®) package insert. Baxalta US Inc., March 2021.
- Immune globulin injection 10% - human (Gammaked™) package insert. Kedrion Biopharma, Inc. January 2020.
- Immune globulin injection – human (Gammunex®-C) package insert. Grifols Therapeutics Inc., April 2022.
- Immune globulin intravenous 5% - human (Octagam® 5%) package insert. Octapharma USA Inc., April 2022.
- Immune globulin intravenous 10% - human (Octagam® 10%) package insert. Octapharma USA Inc., April 2022.
- Immune globulin intravenous 10% liquid – human (Privigen®) package insert. CSL Behring LLC, April 2022.
- Immune globulin subcutaneous- human-hipp (Cutaquig®) package insert. Octapharma USA Inc., November 2021.
- Immune globulin subcutaneous – human (Cuvitru®) package insert. Baxalta US Inc., October 2021.
- Immune globulin subcutaneous – human (Hizentra®) package insert. CSL Behring LLC, April 2022.
- Immune globulin infusion 10% - human, with recombinant human hyaluronidase (Hyqvia®) package insert. Baxalta US Inc., March 2021.
- Immune globulin subcutaneous- human-klhw (Xembify®) package insert. Grifols Therapeutics Inc., February 2022.
Ivacaftor (Kalydeco) and Lumacaftor/Ivacaftor (Orkambi)
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 22, 2022; Feb. 2020; Jan. 2020; Nov. 2019; Dec. 2017; Feb. 2016; June 2014.
- Initially developed
- Oct. 2012
1. Dosage
Ivacaftor is categorized as a cystic fibrosis transmembrane conductance regulator (CFTR) potentiator. Cystic fibrosis (CF) occurs because of CFTR genetic mutations causing mucosal obstruction of the distal lung airway and submucosal glands. Malfunction of the CFTR alters electrolyte homeostasis, which changes cell potentials and can lead to organ damage in CF patients. Patient genotyping shows that approximately 4% of the 30,000 CF patients in America are believed to have a G551D-CFTR mutation. Kalydeco® (Ivacaftor) targets multi-organ chloride channels at the surface of epithelial cells to enhance the opening of the CFTR protein.
Kalydeco® (ivacaftor) is FDA approved for use in patients 4 months or older who have one mutation in the CFTR gene that is responsive to ivacaftor therapy based on clinical and/ or in vitro assay data. If the patient’s genotype is unknown then an FDA-cleared CF mutation test should be used to detect the presence of a CFTR mutation followed by verification with bi-directional sequencing when recommended by the mutation test instructions for use 1,2,4. A list of CF mutations indicated for the treatment of CF in patients 4 months of age and older are provided in the list below.
List of CFTR Gene Mutations that Produce Protein and are Responsive to Kalydeco®
- 711+3A→G*
- 2789+5G→A*
- 3272-26A→G*
- 3849+10kbC→T*
- A120T
- A234D
- A349V
- A455E*
- A1067T
- D110E
- D110H
- D192G
- D579G*
- D924N
- D1152H*
- D1270N
- E56K
- E193K
- E822K
- E831X*
- F311del
- F311L
- F508C
- F508C;S1251N†
- F1052V
- F1074L
- G178E
- G178R*
- G194R
- G314E
- G551D*
- G551S*
- G576A
- G970D
- G1069R
- G1244E*
- G1249R
- G1349D*
- H939R
- H1375P
- I148T
- I175V
- I807M
- I1027T
- I1139V
- K1060T
- L206W*
- L320V
- L967S
- L997F
- L1480P
- M152V
- M952I
- M952T
- P67L*
- Q237E
- Q237H
- Q359R
- Q1291R
- R74W
- R75Q
- R117C*
- R117G
- R117H*
- R117L
- R117P
- R170H
- R347H*
- R347L
- R352Q*
- R553Q
- R668C
- R792G
- R933G
- R1070Q
- R1070W*
- R1162L
- R1283M
- S549N*
- S549R*
- S589N
- S737F
- S945L*
- S977F*
- S1159F
- S1159P
- S1251N*
- S1255P*
- T338I
- T1053I
- V232D
- V562I
- V754M
- V1293G
- W1282R
- Y1014C
- Y1032C
Legend
- * Clinical data exists for these mutations.
- † Complex/compound mutations. Most people with CF have 2 CF mutations, 1 on each copy of the CF gene. However, in rare instances, 1 copy of the CF gene can have more than 1 mutation. This is called a compound, or complex, mutation.
A combination product containing lumacaftor and ivacaftor (Orkambi®) was approved in July 2015 for use in patients 2 years and older who are homozygous for the F508del mutation in the CFTR gene. If the patient’s genotype is unknown, then an FDA-cleared CF mutation test should be used to detect the presence of the F508del mutation on both alleles of the CFTR gene. The F508del mutation is the most common cause of CF, with approximately half of the CF population in the U.S. being homozygous for the mutation. The combined effect of lumacaftor and ivacaftor increases the quantity (lumacaftor) and function (ivacaftor) of the F508del-CFTR ion channel, resulting in improved channel function and clinical benefit. The efficacy and safety of lumacaftor and ivacaftor combination therapy has not been established in patients with cystic fibrosis other than those homozygous for the F508del mutation1-3.
Tezacaftor/ivacaftor (Symdeko®) combination therapy is FDA-approved for CF in patients six years of age and older homozygous for the F508del mutation or who have at least one mutation in the CFTR gene responsive to tezacaftor/ivacaftor. If the patient’s genotype is unknown, then an FDA-cleared CF mutation test should be used to detect the presence of a CFTR mutation followed by verification with bi-directional sequencing when recommended by the mutation test instructions for use. Tezacaftor increases the amount of mature CFTR at the cell surface by expediting cellular processing and trafficking of normal and select mutant forms of CFTR, while ivacaftor enhances channel-opening probability of CFTR proteins at the cell surface. Combined therapy improves CFTR function at the cell surface and increases chloride transport, resulting in clinical benefit1-3, 7. All CFTR protein producing CFTR mutations that are responsive to Symdeko® are listed in the following list8 .
CFTR Mutations that Produce CFTR Protein and Are Responsive to Symdeko®
- 546insCTA§
- 711+3A→G*
- 2789+5G→A*
- 3272-26A→G*
- 3849+10kbC→T*
- A120T§
- A234D§
- A349V§
- A455E*
- A554E§
- A1006E§
- A1067T
- D110E
- D110H*
- D192G§
- D443Y§
- D443Y;G576A;R668C‡§
- D579G*
- D614G§
- D836Y§
- D924N§
- D979V§
- D1152H*
- D1270N
- E56K
- E60K§
- E92K§
- E116K§
- E193K
- E403D§
- E588V§
- E822K§
- E831X
- F191V§
- F311del§
- F311L§
- F508C§
- F508C;S1251N‡§
- F508del†
- F575Y§
- F1016S§
- F1052V
- F1074L
- F1099L§
- G126D§
- G178E§
- G178R§
- G194R§
- G194V§
- G314E§
- G551D§
- G551S§
- G576A§
- G576A;R668C‡§
- G622D§
- G970D§
- G1069R§
- G1244E§
- G1249R§
- G1349D§
- H939R§
- H1054D§
- H1375P§
- I148T§
- I175V§
- I336K§
- I601F§
- I618T§
- I807M§
- I980K§
- I1027T§
- I1139V§
- I1269N§
- I1366N§
- K1060T
- L15P§
- L206W*
- L320V§
- L346P§
- L967S§
- L997F§
- L1324P§
- L1335P§
- L1480P§
- M152V§
- M265R§
- M952I§
- M952T§
- P5L§
- P67L*
- P205S§
- Q98R§
- Q237E§
- Q237H§
- Q359R§
- Q1291R§
- R31L§
- R74Q§
- R74W
- R74W; D1270N‡§
- R74W;V201M‡§
- R74W;V201M;D1270N‡§
- R75Q§
- R117C*§
- R117G§
- R117H§
- R117L§
- R117P§
- R170H§
- R258G§
- R334L§
- R334Q§
- R347H*§
- R347L§
- R347P§
- R352Q*§
- R352W§
- R553Q§
- R668C§
- R751L§
- R792G§
- R933G§
- R1066H§
- R1070Q§
- R1070W*
- R1162L§
- R1283M§
- R1283S§
- S549N§
- S549R§
- S589N§
- S737F§
- S912L§
- S945L*
- S977F*
- S1159F§
- S1159P§
- S1251N§
- S1255P§
- T338I§
- T1036N§
- T1053I§
- V201M§
- V232D§
- V562I§
- V754M§
- V1153E§
- V1240G§
- V1293G§
- W1282R§
- Y109N§
- Y161S§
- Y1014C§
- Y1032C§
Legend:
- § = Mutations approved in December 2020
- * = Clinical data for these mutations appear in sections 14.1 and 14.2 of the Prescribing Information.
- † = A patient must have 2 copies of the F508del mutation or at least 1 copy of a responsive mutation listed above in this table to be indicated for Symdeko®.
- ‡ = Complex/compound mutations in which a single allele of the CFTR gene has multiple mutations; these exist independent of the presence of mutations on the other allele.
Trikafta® is a combination product of elexacaftor, tezacaftor, and ivacaftor that is FDA approved for the treatment of cystic fibrosis patients 6 years of age and older who have at least one F508del mutation in the CFTR gene or a mutation in the CFTR gene that is responsive based on in vitro data. If the patient’s genotype is unknown, then an FDA-cleared cystic fibrosis test should be used to confirm the presence of at least one F508del mutation or a responsive mutation based on in vitro data1,2,10.
Both elexacaftor and tezacaftor increase the amount of mature CFTR at the cell surface by facilitating cellular processing and trafficking of normal and select mutant forms of CFTR, while ivacaftor enhances channel-opening probability of CFTR proteins at the cell surface. Combined therapy improves CFTR function at the cell surface, increases chloride transport, and results in clinical benefit1-3, 7-9. A list of CFTR gene mutations that are responsive to Trikafta® therapy are listed below10.
List of CFTR Gene Mutations that are Responsive to Trikafta®
- 3141del9
- 546insCTA
- A46D
- A120T
- A234D
- A349V
- A455E
- A554E
- A1006E
- A1067T
- D110E
- D110H
- D192G
- D443Y
- D443Y;G576A;R668C†
- D579G
- D614G
- D836Y
- D924N
- D979V
- D1152H
- D1270N
- E56K
- E60K
- E92K
- E116K
- E193K
- E403D
- E474K
- E588V
- E822K
- F191V
- F311del
- F311L
- F508C
- F508C;S1251N†
- F508del*
- F575Y
- F1016S
- F1052V
- F1074L
- F1099L
- G27R
- G85E
- G126D
- G178E
- G178R
- G194R
- G194V
- G314E
- G463V
- G480C
- G551D
- G551S
- G576A
- G576A;R668C†
- G622D
- G628R
- G970D
- G1061R
- G1069R
- G1244E
- G1249R
- G1349D
- H139R
- H199Y
- H939R
- H1054D
- H1085P
- H1085R
- H1375P
- I148T
- I175V
- I336K
- I502T
- I601F
- I618T
- I807M
- I980K
- I1027T
- I1139V
- I1269N
- I1366N
- K1060T
- L15P
- L165S
- L206W
- L320V
- L346P
- L453S
- L967S
- L997F
- L1077P
- L1324P
- L1335P
- L1480P
- M152V
- M265R
- M952I
- M952T
- M1101K
- P5L
- P67L
- P205S
- P574H
- Q98R
- Q237E
- Q237H
- Q359R
- Q1291R
- R31L
- R74Q
- R74W
- R74W;D1270N†
- R74W;V201M†
- R74W;V201M;D1270N†
- R75Q
- R117C
- R117G
- R117H
- R117L
- R117P
- R170H
- R258G
- R334L
- R334Q
- R347H
- R347L
- R347P
- R352Q
- R352W
- R553Q
- R668C
- R751L
- R792G
- R933G
- R1066H
- R1070Q
- R1070W
- R1162L
- R1283M
- R1283S
- S13F
- S341P
- S364P
- S492F
- S549N
- S549R
- S589N
- S737F
- S912L
- S945L
- S977F
- S1159F
- S1159P
- S1251N
- S1255P
- T338I
- T1036N
- T1053I
- V201M
- V232D
- V456A
- V456F
- V562I
- V754M
- V1153E
- V1240G
- V1293G
- W361R
- W1098C
- W1282R
- Y109N
- Y161D
- Y161S
- Y563N
- Y1014C
- Y1032C
Legend:
- * = F508del is a responsive CFTR mutation based on both clinical and in vitro data.
- † = Complex/ compound mutations where a single allele of the CFTR gene has multiple mutations; these exist independent of the presence of mutations on the other allele.
1.1. Adults
Recommended adult ivacaftor doses as monotherapy and combination therapy are summarized in Tables 4 and 5. Dosage adjustments for ivacaftor monotherapy and combination therapy when administered adjunctively with cytochrome P450 3A4 inhibitors are summarized in Table 6 1-3, 4, 6, 7, 10. Dosages in patient profiles exceeding these recommendations will be reviewed.
Treatment Indication | Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
CF (patients with one mutation in CFTR gene responsive to ivacaftor potentiation) | ivacaftor (Kalydeco®) | 150 mg oral tablets | 150 mg orally every 12 hours with fat-containing food |
Legend:
- CF = cystic fibrosis
- CFTR = cystic fibrosis transmembrane conductance regulator
Treatment Indication | Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
CF (patients homozygous for F508del mutation in the CFTR gene) | lumacaftor/ivacaftor (Orkambi®) | 200 mg/125 mg oral tablets | 400 mg/250 mg (2 x 200 mg lumacaftor/125 mg ivacaftor tablets) orally every 12 hours with fat-containing food |
CF (patients homozygous for F508del mutation or have at least one mutation in the CFTR gene responsive to tezacaftor/ivacaftor) | tezacaftor/ivacaftor (Symdeko®) | tezacaftor 100 mg/ivacaftor 150 mg; ivacaftor 150 mg oral tablets | tezacaftor 100 mg/ivacaftor 150 mg in morning and ivacaftor 150 mg in evening approximately 12 hours apart with fat-containing food |
CF (patients have at least one F508del mutation in the CFTR gene or have at least one mutation in the CFTR gene responsive to elexacaftor/tezacaftor/ivacaftor) |
elexacaftor/tezacaftor/ivacaftor (Trikafta®) | elexacaftor 100 mg/ tezacaftor 50 mg/ ivacaftor 75 mg oral tablet; ivacaftor 150 mg oral tablet | 2 tablets (elexacaftor 100 mg/ tezacaftor 50 mg/ ivacaftor 75 mg) in morning and one ivacaftor 150 mg tablet in evening approximately 12 hours apart with fat-containing food |
Legend:
- CF = cystic fibrosis
- CFTR = cystic fibrosis transmembrane conductance regulator
Ivacaftor Drug Name | Concurrent CYP3A4 Inhibitor Therapy | Dosage Recommendations* |
---|---|---|
ivacaftor (Kalydeco®) | strong CYP3A inhibitors (e.g., ketoconazole) | ivacaftor dosages should be reduced to 150 mg twice weekly |
ivacaftor (Kalydeco®) | moderate CYP3A inhibitors (e.g., erythromycin, fluconazole) | ivacaftor dosages should be reduced to 150 mg once daily |
lumacaftor/ivacaftor (Orkambi®) | strong CYP3A inhibitors (e.g., ketoconazole) | lumacaftor/ivacaftor dosages should be reduced to 200 mg/125 mg once daily in patients receiving strong CYP3A inhibitors for the first week, followed by lumacaftor 400 mg/ivacaftor 250 mg every 12 hours thereafter; no dosage adjustments are needed if CYP3A inhibitors are initiated in patients already taking lumacaftor/ivacaftor |
lumacaftor/ivacaftor (Orkambi®) | moderate CYP3A inhibitors (e.g., erythromycin, fluconazole) | no dosage adjustments recommended |
tezacaftor/ivacaftor (Symdeko®) | strong CYP3A inhibitors (e.g., ketoconazole) |
Day 1: tezacaftor/ivacaftor 100 mg/150 once daily in morning Days 2 and 3: no dosages administered Day 4: tezacaftor/ivacaftor 100 mg/150 once daily in morning The evening ivacaftor dose should NOT be given Continue twice weekly (morning) administration schedule, with 3-4 days between dosages |
tezacaftor/ivacaftor (Symdeko®) | moderate CYP3A inhibitors (e.g., erythromycin, fluconazole) |
Day 1: tezacaftor/ivacaftor 100 mg/150 once daily in morning Day 2: ivacaftor 150 mg once daily in morning The evening ivacaftor dose should NOT be given Continue alternate day (morning) administration schedule |
elexacaftor/tezacaftor/ivacaftor (Trikafta®) | strong CYP3A inhibitors (e.g., ketoconazole) |
2 tablets (elexacaftor 100 mg/ tezacaftor 50 mg/ ivacaftor 75 mg) in morning twice weekly, with 3-4 days between dosages The evening ivacaftor dose should NOT be given |
elexacaftor/tezacaftor/ivacaftor (Trikafta®) | moderate CYP3A inhibitors (e.g., erythromycin, fluconazole) |
Day 1: 2 tablets (elexacaftor 100 mg/tezacaftor 50 mg/ivacaftor 75 mg) in morning Day 2: ivacaftor 150 mg once daily in morning The evening ivacaftor dose should NOT be given Continue alternate day (morning) administration schedule |
Legend:
- CYP3A/3A4 = cytochrome P450 3A/3A4
- *all dosages should be given with a fat-containing meal
1.2. Pediatrics
Tables 7 and 8 summarize ivacaftor dosing recommendations as monotherapy and combination therapy for pediatric patients. Ivacaftor is not recommended in patients less than 4 months of age1-4. Safety and efficacy of lumacaftor/ivacaftor combination therapy in children less than 2 years of age have not been established1-3, 6. Tezacaftor/ivacaftor safety and efficacy have not been determined in children below 6 years of age, while elexacaftor/tezacaftor/ivacaftor efficacy/safety have not been established in children younger than 6 years of age1-3, 7, 10. Dosage adjustments for ivacaftor monotherapy and combination therapy when administered concomitantly with cytochrome P450 3A4 inhibitors are summarized in Table 9. Ivacaftor is not recommended for use concurrently with CYP3A strong inducers.
Treatment Indication | Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
CF (patients with one mutation in CFTR gene responsive to ivacaftor potentiation) | ivacaftor (Kalydeco®) |
25 mg, 50 mg, 75 mg oral granules 150 mg oral tablets |
children/adolescents 6-17 years: 150 mg orally every 12 hours with fat-containing food infants/children 6 months to less than 6 years (greater than 14 kg): 75 mg as oral granules every 12 hours with fat-containing food infants/children 6 months to less than 6 years (7 kg to less than 14 kg): 50 mg as oral granules every 12 hours with fat-containing food infants/children 6 months to less than 6 years (5 kg to less than 7 kg): 25 mg as oral granules every 12 hours with fat-containing food infants 4 to 5 months weighing 5 kg or more: 25 mg as oral granules every 12 hours with fat-containing food |
Legend:
- CF = cystic fibrosis
- CFTR = cystic fibrosis transmembrane conductance regulator
Treatment Indication | Drug Name | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
CF (patients homozygous for F508del mutation in the CFTR gene) | lumacaftor/ivacaftor (Orkambi®) |
100 mg/ 125 mg, 150 mg/188 mg oral granules 100 mg/125 mg, 200 mg/125 mg oral tablets |
|
CF (patients homozygous for F508del mutation or have at least one mutation in the CFTR gene responsive to tezacaftor/ivacaftor) | tezacaftor/ivacaftor (Symdeko®) |
tezacaftor 50 mg/ivacaftor 75 mg oral tablet; ivacaftor 75 mg oral tablet tezacaftor 100 mg/ivacaftor 150 mg oral tablet; ivacaftor 150 mg oral tablet |
|
CF (patients have at least one F508del mutation in the CFTR gene) | elexacaftor/tezacaftor/ivacaftor (Trikafta®) |
elexacaftor 100 mg/ tezacaftor 50 mg/ ivacaftor 75 mg oral tablet; ivacaftor 150 mg oral tablet elexacaftor 50 mg/ tezacaftor 25 mg/ ivacaftor 37.5 mg oral tablet; ivacaftor 75 mg oral tablet |
|
Legend:
- CF = cystic fibrosis
- CFTR = cystic fibrosis transmembrane conductance regulator
Ivacaftor Drug Name | Concurrent CYP3A4 Inhibitor Therapy | Dosage Recommendations* |
---|---|---|
ivacaftor (Kalydeco®) | strong CYP3A inhibitors (e.g., ketoconazole) |
|
ivacaftor (Kalydeco®) | moderate CYP3A inhibitors (e.g., erythromycin, fluconazole) |
|
lumacaftor/ivacaftor (Orkambi®) | strong CYP3A inhibitors (e.g., ketoconazole) |
|
lumacaftor/ivacaftor (Orkambi®) | strong CYP3A inhibitors (e.g., ketoconazole) |
|
lumacaftor/ivacaftor (Orkambi®) | moderate CYP3A inhibitors (e.g., erythromycin, fluconazole) | no dosage adjustments recommended |
tezacaftor/ivacaftor (Symdeko®) | strong CYP3A inhibitors (e.g., ketoconazole) |
|
tezacaftor/ivacaftor (Symdeko®) | moderate CYP3A inhibitors (e.g., erythromycin, fluconazole) |
|
elexacaftor/tezacaftor/ivacaftor (Trikafta®) | strong CYP3A inhibitors (e.g., ketoconazole) |
|
elexacaftor/tezacaftor/ivacaftor (Trikafta®) | moderate CYP3A inhibitors (e.g., erythromycin, fluconazole) |
|
Legend:
- CYP3A = cytochrome P450 3A
1.3. Dosing in Renal Impairment
Because ivacaftor, lumacaftor/ivacaftor, tezacaftor/ivacaftor, and elexacaftor/tezacaftor/ivacaftor have not been studied in patients with renal insufficiency, these medications should be used cautiously in patients with CrCl less than or equal to 30 mL/min 1-4, 6, 7, 10.
1.4. Dosing in Hepatic Impairment
It is recommended that ALT and AST values be assessed prior to initiating ivacaftor, lumacaftor/ivacaftor, tezacaftor/ivacaftor, or elexacaftor/tezacaftor/ivacaftor therapy every 3 months during the first year, and annually thereafter. Dosing should be interrupted in patients with ALT or AST values of greater than 5 times the upper limit of normal (ULN). Following the resolution of transaminase elevations, consider the benefits and risks of resuming ivacaftor. The use of ivacaftor in patients four months to less than six months of age with hepatic impairment is not recommended. Tables 10 and 11 summarize ivacaftor dosing recommendations in adults and pediatric patients with hepatic impairment.
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B | 150 mg once daily |
C | 150 mg once daily or less frequently (not studied) |
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B |
Greater than or equal to 14 kg: 75 mg granule packet once daily 7 to less than 14 kg: 50 mg granule packet once daily 5 to less than 7 kg: 25 mg granule packet once daily |
C |
Greater than or equal to 14 kg: 75 mg granule packet once daily or less frequently (not studied) 7 to less than 14 kg: 50 mg granule packet once daily or less frequently (not studied) 5 to less than 7 kg: 25 mg granule packet once daily or less frequently (not studied) |
Tables 12 and 13 summarize lumacaftor/ivacaftor dosing recommendations in adult and pediatric patients with hepatic impairment.
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B |
greater than or equal to 6-11 years: Lumacaftor 200 mg/ivacaftor 250 mg in morning, and lumacaftor 100 mg/ivacaftor 125 mg in evening 12 to less than 18 years: Lumacaftor 400 mg/ivacaftor 250 mg in morning, and lumacaftor 200 mg/ivacaftor 125 mg in evening |
C |
greater than or equal to 6-11 years: Maximum dose of lumacaftor 100 mg/ivacaftor 125 mg every 12 hours (or less frequently); use with caution 12 to less than 18 years: Maximum dose of lumacaftor 200 mg/ivacaftor 125 mg every 12 hours (or less frequently); use with caution |
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B | Lumacaftor 150 mg/ivacaftor 188 mg (greater than or equal to 14 kg) or lumacaftor 100 mg/ivacaftor 125 mg (less than 14 kg) as oral granules in morning, and lumacaftor 150 mg/ivacaftor 188 mg (greater than or equal to 14 kg) or lumacaftor 100 mg/ivacaftor 125 mg (less than 14 kg) as oral granules in the evening every other day |
C | Lumacaftor 150 mg/ivacaftor 188 mg (greater than or equal to 14 kg) or lumacaftor 100 mg/ivacaftor 125 mg (less than 14 kg) as oral granules in morning (or less frequently); no dose should be given in evening (use with caution) |
Tables 14 and 15 summarize tezacaftor/ivacaftor dosing recommendations in adults and pediatric patients 6 years and older with hepatic impairment.
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B | Tezacaftor/ivacaftor 100 mg/150 once daily in morning; the evening ivacaftor 150 mg dose should not be given |
C | Tezacaftor/ivacaftor 100 mg/150 once daily in morning (or less frequently); the evening ivacaftor 150 mg dose should not be given; use with caution – not studied in severe hepatic impairment) |
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B | Tezacaftor/ivacaftor 50 mg/75 once daily in morning; the evening ivacaftor 75 mg dose should not be given |
C | Tezacaftor/ivacaftor 50 mg/75 once daily in morning (or less frequently); the evening ivacaftor 75 mg dose should not be given; use with caution – not studied in severe hepatic impairment) |
Table 16 summarizes elexacaftor/tezacaftor/ivacaftor dosing recommendations in adults and pediatric patients greater than or equal to 12 years with hepatic impairment, and Table 17 summarizes dosing recommendations for patients 6-11 years with hepatic impairment.
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B |
|
C | Not recommended for use |
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B |
|
C | Not recommended for use |
Child-Pugh Class | Recommendation |
---|---|
A | No dosage adjustment |
B |
|
C | Not recommended for use |
2. Duration of Therapy
3. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for ivacaftor are summarized in Table 19. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed:
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
ivacaftor, lumacaftor/ivacaftor, tezacaftor/ivacaftor, elexacaftor/tezacaftor/ivacaftor | strong CYP3A inhibitors (e.g., ketoconazole, voriconazole, posaconazole, telithromycin, clarithromycin) | concurrent use significantly increased ivacaftor exposure (8.5-fold ↑ in AUC with ketoconazole); adjunctive administration may significantly increase elexacaftor, tezacaftor and ivacaftor concentrations and ↑ potential for enhanced pharmacologic/adverse effects | reduce elexacaftor, ivacaftor, tezacaftor dosages and monitor for efficacy and adverse events | 2-major (CP) major (DrugReax) |
ivacaftor, tezacaftor/ivacaftor, elexacaftor/tezacaftor/ivacaftor | moderate CYP3A inhibitors (e.g., fluconazole) | concurrent use increased ivacaftor exposure (3-fold ↑ AUC with fluconazole); adjunctive administration may significantly increase tezacaftor and ivacaftor concentrations and ↑ potential for enhanced pharmacologic/adverse effects | reduce elexacaftor, ivacaftor, tezacaftor dosages and monitor for efficacy and adverse events | 2-major (CP) moderate (DrugReax) |
ivacaftor, lumacaftor/ivacaftor, tezacaftor/ivacaftor, elexacaftor/tezacaftor/ivacaftor | strong CYP3A inducers (e.g., rifampin, phenobarbital, carbamazepine, phenytoin, St. John’s wort) | concurrent use decreased ivacaftor exposure [9-fold ↓ AUC with rifampin (57% ↓)]; adjunctive administration may significantly reduce elexacaftor, tezacaftor and ivacaftor concentrations (CYP3A substrates) and ↓ efficacy | strong CYP3A inducers should be avoided while taking ivacaftor, lumacaftor/ ivacaftor, tezacaftor/ ivacaftor, and elexacaftor/ tezacaftor/ ivacaftor | 2-major (CP) major (DrugReax) |
ivacaftor, lumacaftor/ivacaftor, tezacaftor/ivacaftor, elexacaftor/tezacaftor/ivacaftor | CYP3A and/or P-glycoprotein (P-gp) substrates (e.g., midazolam, alprazolam, cyclosporine, tacrolimus) | ivacaftor may be a weak CYP3A and P-gp transport inhibitor; concurrent use with midazolam ↑ midazolam AUC 1.5-fold and ↑ digoxin AUC 1.3-fold |
use with caution and monitor drug- related side effects and/or monitor therapeutic levels | tacrolimus: 2-major; others - 3-moderate (CP) moderate (DrugReax) |
lumacaftor/ivacaftor | CYP3A substrates (e.g., antibiotics, antifungals, antivirals) | lumacaftor is strong CYP3A inducer; concurrent use may result in reduced efficacy of CYP3A substrates | consider alternative antibiotics such as azithromycin, ciprofloxacin, or levofloxacin whenever possible; if an antifungal is required, monitor for breakthrough fungal infection; consider alternative treatment with fluconazole whenever possible; may also adjust lumacaftor/ivacaftor dosages or avoid combination, if possible | major (DrugReax) 2-major (CP) |
lumacaftor/ivacaftor | hormonal contraceptives | concurrent administration may reduce hormonal contraceptive exposure and efficacy and may increase menstruation-associated adverse events (e.g., menorrhagia) | avoid concurrent use; use alternate methods of birth control | major (DrugReax) 2-major (CP) |
ivacaftor, lumacaftor/ivacaftor, tezacaftor/ivacaftor, elexacaftor/tezacaftor/ivacaftor | warfarin | warfarin exposure may be modified with adjunctive lumacaftor/ ivacaftor administration, as lumacaftor/ ivacaftor is a CYP3A4 inducer, the enzyme that metabolizes R-warfarin, and ivacaftor may be a weak CYP2C9 inhibitor, the primary enzyme that metabolizes S-warfarin | monitor international normalized ratio and adjust warfarin dosages as needed | moderate (DrugReax) 3-moderate (C |
Legend:
- *CP = Clinical Pharmacology
- AUC = area under the curve
4. References
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed December 6th, 2021.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2021. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed December 6th, 2021.
- American Society of Health-System Pharmacists. 2021. AHFS Drug Information® - 2021st Ed. Bethesda, MD. American Society of Health-System Pharmacists®. STAT!Ref Online Electronic Medical Library. Available at: https://online.statref.com/document/cQfe8yqMRNqgSGqm4Qo8Qj. Accessed December 6th, 2021.
- Ivacaftor (Kalydeco®) package insert. Vertex Pharmaceuticals, Inc., December 2020.
- Vertex Pharmaceuticals News & Events Press Release. FDA approves Kalydeco (ivacaftor) as first and only CFTR modulator to treat eligible infants with CF as early as four months of age. Vertex Pharmaceuticals Inc., September 2020.
- Lumacaftor/ivacaftor (Orkambi®) package insert. Vertex Pharmaceuticals, Inc., July 2019.
- Tezacaftor/ivacaftor tablets; ivacaftor tablets (Symdeko®) package insert. Vertex Pharmaceuticals, Inc., December 2020.
- Vertex Pharmaceuticals News & Events Press Release. FDA announces FDA approvals of Trikafta (elexacaftor/ tezacaftor/ ivacaftor and ivacaftor), Symdeko (tezacaftor/ ivacaftor/ and ivacaftor), and Kalydeco (ivacaftor) for use in people with CF with certain rare mutations. Vertex Pharmaceuticals Inc., December 2020.
- U.S. Food and Drug Administration. FDA approves new breakthrough therapy for cystic fibrosis. Available at: https://www.fda.gov/news-events/press-announcements/fda-approves-new-breakthrough-therapy-cystic-fibrosis. Accessed December 6th, 2021.
- Elexacaftor/tezacaftor/ivacaftor tablets; ivacaftor tablets (Trikafta®) package insert. Vertex Pharmaceuticals, Inc., October 2021.
- Wright CC, Vera YY. Chapter 46. Cystic fibrosis. In: DiPiro JT, Yee GC, Posey LM, et al, eds. Pharmacotherapy: a pathophysiologic approach. 11th ed. New York: McGraw-Hill; 2019. Available at: https://accesspharmacy-mhmedical-com.ezproxy.lib.utexas.edu/content.aspx?bookid=2577§ionid=219316881. Accessed December 6th, 2021.
- Simon RH. Cystic fibrosis: treatment with CFTR modulators. Post TW, ed. UpToDate. Waltham, MA: UpToDate Inc. https://www.uptodate.com (Accessed on December 6th, 2021.)
- Ramsey BW, Davies J, McElvaney NG, et al. A CFTR potentiator in patients with cystic fibrosis and the GG51D mutation. N Engl J Med. 2011;365(18):1663-72.
- Davies JC, Wainwright CE, Canny GJ, et al. Efficacy and safety of ivacaftor in patients aged 6 to 11 years with cystic fibrosis with a G551D mutation. Am J Respir Crit Care Med. 2013;187(11):1219-25.
- Konstan MW, McKone EF, Moss RB, et al. Assessment of safety and efficacy of long-term treatment with combination lumacaftor and ivacaftor therapy in patients with cystic fibrosis homozygous for the F508del-CFTR mutation (PROGRESS): a phase 3, extension study. Lancet Respir Med. 2017;5(2):107-18.
- Heltshe SL, Rowe SM, Skalland M, et al. for the GOAL Investigators of the Cystic Fibrosis Foundation Therapeutics Development Network. Ivacaftor-treated patients with cystic fibrosis derive long-term benefit despite no short-term clinical improvement. Am J Respir Crit Care Med. 2018;197(11):1483-6.
Ketorolac (oral)
Ketorolac (oral) - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revised
- July 21, 2023
- July 23, 2021
- May 24, 2019
- May 2016
- Dec. 2014
- March 2013
- May 2011
- Jan. 2009
- Oct. 2003
- Oct. 2002
- Sept. 2001
- Oct. 2000
- Sept. 1999
- Sept. 1998
- Sept. 1997
- Oct. 1996
- Oct. 1995
- Initially developed
- Feb. 1995
1. Dosage
1.1. Adults
Intranasal or oral ketorolac, a nonsteroidal anti-inflammatory drug (NSAID), is FDA-approved for short-term (no more than 5 days) management of acute moderate to severe pain, usually in the postoperative setting, that requires pain management at the opioid level.
Oral ketorolac is only approved for use after therapy initiation with intravenous or intramuscular ketorolac. Therefore, a prescription for a parenteral form of ketorolac should precede treatment with oral ketorolac to satisfy manufacturer and FDA recommendations.
The maximum recommended dosage for oral ketorolac is 40 mg/24 hours given in divided doses every 4 to 6 hours. Dosages exceeding this recommendation will be reviewed.
Intranasal ketorolac is dosed as one spray (15.75 mg) in each nostril every 6 to 8 hours for a maximum total of 8 sprays (126 mg) in a 24-hour period for patients less than 65 years of age. In patients with renal impairment, age greater than or equal to 65 years, or those weighing less than 50 kg, intranasal ketorolac should be dosed as one spray (15.75 mg) in one nostril every 6 to 8 hours for a total of 4 doses (63 mg) per 24-hour period. Discard the intranasal ketorolac bottle after 24 hours, even if liquid is still present in the bottle, as the delivery system is not designed to deliver the intended dose after 24 hours.
1.2. Pediatrics
Ketorolac is not FDA-approved for pediatric patients younger than 17 years of age as safety and efficacy in this age group have not been established. In adolescents 17 years of age and older, the maximum oral daily ketorolac dose is 40 mg in divided doses as continuation from parenteral ketorolac therapy. The maximum intranasal dose in pediatric patients 17 years of age and older is 126 mg per 24 hours in divided doses [one spray (15.75 mg) in each nostril (31.5 mg total) every 6 to 8 hours]. Discard the intranasal ketorolac bottle after 24 hours, even if liquid is still present in the bottle, as the delivery system is not designed to deliver the intended dose after 24 hours.
2. Duration of Therapy
2.1. Therapy Limits
The maximum treatment duration for oral and parenteral ketorolac, combined, is 5 days due to increased frequency and severity of adverse effects associated with extended use. The maximum treatment period for nasal ketorolac when used as monotherapy or sequentially with other ketorolac dosage forms is also 5 days. Treatment regimens exceeding these requirements will be reviewed.
2.2. NSAID Use and Elderly Patients
Elderly patients frequently utilize prescription and nonprescription NSAIDs to manage acute and chronic pain. Several issues surface with NSAID use in elderly patients, including potential adverse effects and drug interactions. NSAID-induced gastrointestinal and renal toxicity as well as adverse central nervous system effects are more prevalent in elderly patients due to changes in metabolism, underlying disease states, and concurrent drug therapy. The majority of fatal gastrointestinal events associated with ketorolac use have been seen in elderly or debilitated patients. The potential for increased cardiovascular risk with NSAID use is also a factor when evaluating NSAID therapy in elderly patients. Elderly patients prescribed NSAIDs, especially those at higher risk, should be evaluated for appropriateness of therapy as well as potential for drug-drug interactions. Appropriate ketorolac therapy duration as well as appropriate dosages should also be evaluated.
2.3. NSAID Use and Cardiovascular Risk
Some clinical trials have shown that patients prescribed selective and nonselective NSAIDs may be at increased risk for serious cardiovascular (CV) thrombotic events, myocardial infarction, and stroke, all of which can be fatal. Patients at greater risk are those with known CV disease or risk factors for CV disease. Due to the lack of long-term clinical trial data, CV risks associated with NSAID use remains controversial, especially in high-risk patients. Risk also varies between nonselective NSAIDs and cyclooxygenase-2 (COX-2) inhibitors, as well as between individual NSAIDs. The Center for Drug Evaluation and Research has determined that the increased risk of CV events associated with NSAID use should be considered a class effect for both selective and nonselective NSAIDs until more results are available. Patients should be prescribed the lowest effective NSAID dose for the shortest possible treatment duration to minimize the potential for cardiovascular adverse events.
NSAIDs may induce new onset hypertension or worsen pre-existing hypertension in some patients, which may contribute to the development of cardiovascular adverse events. Blood pressure should be routinely monitored in patients prescribed NSAIDs.
NSAIDs may cause fluid retention or edema in some patients, and should be used cautiously in patients with a history of fluid retention or heart failure.
2.4. NSAID use and Gastrointestinal Risk
All NSAIDs may be associated with an increased risk of serious gastrointestinal (GI) adverse events, including potentially fatal GI bleeding, ulceration, or gastric/intestinal perforation. The risk of NSAID-associated severe GI adverse events increases in patients with a history of peptic ulcer disease, GI bleeding, smoking, alcohol use, concurrent use of anticoagulants or oral corticosteroids, advanced age, poor health and prolonged NSAID use. Ketorolac has a greater incidence of gastritis, gastric ulceration with or without perforation and gastric bleeding compared to other NSAIDs and is contraindicated for use in patients with a history of or active peptic ulcer disease, GI bleeding, or perforation, and should be used cautiously in patients with other types of GI disease (e.g., inflammatory bowel disease). Additionally, total systemic use for ketorolac is limited to 5 days due to increased incidence of severe adverse events, including GI events, with prolonged use.
3. Duplicative Therapy
Adjunctive use of ketorolac with other ketorolac dosage forms, aspirin or other NSAIDs is contraindicated as combined therapy may result in an increased risk of gastrointestinal (GI) adverse effects and may also increase serum ketorolac levels. Therefore, concurrent ketorolac use with these agents will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically significant for ketorolac are summarized in Table 1. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
ketorolac | pentoxifylline | adjunctive administration may increase bleeding risk, due to unknown mechanism | combined therapy contraindicated | severe (CP) |
ketorolac | phenytoin | concurrent administration increases seizure risk due to unknown mechanism; ketorolac may displace phenytoin from binding sites | monitor for seizures, signs/symptoms of phenytoin toxicity; adjust phenytoin doses as necessary | moderate (CP) |
ketorolac | probenecid | combined administration may increase ketorolac serum concentrations and potential for enhanced pharmacologic/adverse effects due to decreased ketorolac clearance | adjunctive administration contraindicated | severe (CP) |
NSAIDs | antihypertensive agents (e.g., angiotensin converting enzyme inhibitors, angiotensin receptor blockers, beta blockers, diuretics) | potential for decreased antihypertensive effects, increased renal impairment risk (especially in patents dependent on renal prostaglandins for perfusion), with combined therapy; increased hyperkalemia risk with potassium-sparing diuretics; NSAIDs may block production of vasodilator and natriuretic prostaglandins | monitor blood pressure, renal function; observe for hyperkalemia with potassium-sparing diuretics; modify therapy as necessary; use combination cautiously in elderly; sulindac, nonacetylated salicylates may be alternative NSAIDS – have less inhibitory effect on prostaglandin synthesis | moderate (CP) |
NSAIDs | antiplatelet drugs (e.g., clopidogrel, prasugrel) | potential for increased bleeding risk due to additive inhibitory effects on platelet aggregation | administer cautiously together; monitor for increased bleeding, especially gastrointestinal (GI) bleeding | moderate (CP) |
NSAIDs | bisphosphonates | combined therapy may result in additive GI, renal toxicity; NSAIDs also decrease bone mineral density, may attenuate bone mineral stabilizing effects by bisphosphonates | administer combination cautiously; monitor for increased GI/renal adverse effects, reduced bone mineral density | major (CP) |
NSAIDs | corticosteroids | potential for increased GI adverse effects with combined therapy | monitor for adverse effects; avoid prolonged concurrent administration | moderate (CP) |
NSAIDs | cyclosporine | increased risk for additive renal dysfunction with concurrent administration; potential for reduced cyclosporine elimination/ increased pharmacologic and adverse effects due to NSAID effects on renal prostaglandins; NSAIDs may mask signs of infection (e.g., fever, swelling) | use cautiously together; monitor clinical status and signs/symptoms of cyclosporine toxicity (e.g., renal dysfunction, cholestasis, paresthesias) | moderate (CP) |
NSAIDs | fluoroquinolones | increased risk for seizures, potentially due to inhibition of gamma aminobutyric acid (GABA) which results in CNS stimulation | administer cautiously together; consider alternative therapy in patients with predisposition to seizures | moderate (CP) |
NSAIDs | lithium | NSAIDs like ketorolac decreases lithium clearance by blocking renal tubular prostaglandins; may result in increased lithium levels and potential for adverse effects | avoid combination, if possible; if concurrent therapy necessary, monitor lithium levels and signs/symptoms of lithium toxicity when ketorolac therapy initiated or discontinued | moderate (CP) |
NSAIDs | low molecular weight heparins | potential for additive bleeding adverse effects; NSAIDs inhibit platelet aggregation and have increased GI bleeding risk, prolonged bleeding time | avoid concurrent therapy, if possible; if drug combination necessary, use cautiously, monitor for signs/symptoms of bleeding | major (CP) |
NSAIDs | methotrexate (MTX) | potential for increased MTX serum levels, risk of enhanced pharmacologic/toxic effects as NSAIDs like ketorolac can reduce MTX clearance | avoid concurrent NSAIDs prior to, concurrently or following intermediate or high-dose MTX; use cautiously together with low-dose MTX; monitor for increased myelopsuppressive, GI adverse effects; may consider using longer leucovorin rescue | severe (CP) |
NSAIDs | SSRIs/SNRIs (e.g., milnacipran) | increased bleeding risk with combined therapy, especially GI bleeding; SSRIs/SNRIs deplete platelet serotonin, which may impair platelet aggregation | monitor for signs/ symptoms of bleeding; may consider shorter treatment duration, adding proton pump inhibitor, or substituting tricyclic antidepressant for SSRI/SNRI or acetaminophen for NSAID | moderate (CP) |
NSAIDs | sulfonylureas | increased risk for additive hypoglycemia due to inhibition of sulfonylurea metabolism | monitor serum glucose concentrations; adjust doses as necessary | moderate (CP) |
NSAIDs | tacrolimus | potential for additive nephrotoxicity with combined therapy due to NSAID inhibitory effects on renal prostaglandins | avoid combination, if possible; if concurrent therapy necessary, closely monitor renal function | moderate (CP) |
NSAIDs | warfarin | combined therapy may increase risk of GI bleeding as NSAIDs, including ketorolac, inhibit platelet aggregation and may cause gastric erosion | monitor anticoagulant activity and signs of bleeding, especially in first several days of combination therapy; adjust warfarin doses as necessary | major (CP) |
Legend:
- * Clinical Pharmacology
- NSAIDs = nonsteroidal anti-inflammatory drugs
- SNRIs = serotonin-norepinephrine reuptake inhibitors
- SSRIs = selective serotonin reuptake inhibitors
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: June 9, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed June 9, 2023.
- Ketorolac tromethamine film coated oral tablet package insert. Camber Pharmaceuticals, Inc., August 2022.
- Ketorolac tromethamine nasal spray (Sprix®) package insert. Zyla Life Sciences US Inc., April 2021.
- United States Food and Drug Administration. FDA Drug Safety Communication: FDA strengthens warning that non-aspirin nonsteroidal anti-inflammatory drugs (NSAIDs) can cause heart attacks or strokes. (July 9, 2015) Available at: http://www.fda.gov/Drugs/DrugSafety/ucm451800.htm. Accessed June 9, 2023.
Leukotriene Receptor Antagonists
Leukotriene Receptor Antagonists - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 21, 2023
- July 23, 2021
- May 2019
- March 2016
- June 2014
- Oct. 2012
- Nov. 2010
- Oct. 2010
- Sept. 2007
- June 2007
- March 2007
- Initially developed
- Feb. 2007
1. Dosage
Leukotrienes are inflammatory molecules released by mast cells in response to inhaled allergens. Cysteinyl leukotrienes bind to receptors on airway smooth muscle and macrophages and activate a number of airway effects, ultimately resulting in bronchoconstriction and inflammation associated with asthma, as well as the pathophysiologic effects associated with allergic rhinitis. Leukotriene receptor antagonists (LTRAs) prevent binding of cysteinyl leukotrienes to active receptors. Currently available LTRAs include montelukast and zafirlukast, with montelukast FDA-approved for prevention and chronic management of asthma in adults and children 12 months of age and older, seasonal allergic rhinitis in adults and children 2 years of age and older, perennial allergic rhinitis in adults and children 6 months of age and older, and prevention of exercise-induced bronchoconstriction in adults and children 6 years of age and older. Zafirlukast is only FDA-approved for use in preventing and managing chronic asthma in adults and children 5 years of age and older.
The Expert Panel created by the National Heart, Lung and Blood Institute considers LTRAs to be alternative, not preferred, treatment options. The GINA guidelines consider LTRAs to be an option for children greater than 5 years of age, adolescents, and adults at all levels of severity, although clinical benefit is not as significant as that seen with low-dose inhaled corticosteroids. In adult patients, LTRAs may be used as an alternative therapy for mild persistent asthma; however, when used as monotherapy, LTRAs are less effective than low-dose inhaled corticosteroids and may contribute to loss of asthma control if substituted in patients already maintained on inhaled corticosteroid therapy. LTRAs may also be utilized as add-on treatment in patients not adequately controlled on low-dose inhaled corticosteroids and may contribute to inhaled corticosteroid dosage reductions in adults with moderate persistent or severe asthma. However, most studies have shown that long-acting inhaled beta2-agonists are more effective than LTRAs as add-on therapy. In pediatric asthma patients, GINA guidelines state that LTRAs provide partial protection against exercise-induced bronchoconstriction and provide moderate clinical improvement with reduced exacerbations when used as adjunctive therapy in patients inadequately controlled with low-dose inhaled corticosteroids. In moderate persistent asthma, however, increasing inhaled corticosteroid doses is more effective than adding LTRAs to existing therapy, and in moderate-to-severe persistent asthma, the addition of montelukast has not been shown to decrease the use of inhaled corticosteroids.
1.1. Adults
Adult dosage recommendations for LTRAs are summarized in Table 1. Patient profiles containing dosages not conforming to these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
montelukast (Singulair®, generics) | 10 mg tablets, 4 mg, 5 mg chewable tablets, 4 mg oral granule packets | asthma | 10 mg once daily in the evening |
prophylaxis, exercise-induced bronchoconstriction | 10 mg as a single dose, at least 2 hours before exercise; dose should not be repeated within 24 hours of previous dose | ||
perennial and/or seasonal allergic rhinitis | 10 mg daily | ||
zafirlukast (Accolate®, generics) | 10 mg, 20 mg tablets | asthma | 20 mg twice daily |
1.2. Pediatrics
Pediatric dosage recommendations for LTRAs are summarized in Table 2. Patient profiles containing dosages not conforming to these recommendations will be reviewed.
Drug Nam | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
montelukast (Singulair®, generics) | 10 mg tablets, 4 mg, 5 mg chewable tablets, 4 mg oral granule packets | asthma |
|
prophylaxis, exercise-induced bronchoconstriction |
adolescents greater than or equal to 15 years of age:
children 6 to 14 years of age:
|
||
seasonal allergic rhinitis |
|
||
perennial allergic rhinitis |
|
||
zafirlukast (Accolate®, generics) | 10 mg, 20 mg tablets | asthma |
|
2. Duration of Therapy
LTRAs are indicated for the management of chronic asthma and seasonal allergic rhinitis and may be continued indefinitely, as both allergic rhinitis and asthma are chronic, lifelong processes.
3. Duplicative Therapy
Zileuton (Zyflo®), a 5-lipoxygenase inhibitor, inhibits formation of cysteinyl leukotrienes. Concurrent administration of LTRAs with zileuton does not provide additional clinical benefit and may increase risk of developing adverse events. Concurrent administration of LTRAs with zileuton is not recommended and will be reviewed.
Adjunctive administration of montelukast and zafirlukast does not provide additional clinical benefit and may result in additive adverse effects. Combined administration of montelukast and zafirlukast is not recommended and will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions.
No dosage adjustments are necessary when montelukast is co-administered with theophylline, prednisone, prednisolone, oral contraceptives, digoxin, warfarin, thyroid hormones, sedative hypnotics, nonsteroidal anti-inflammatory agents, benzodiazepines, decongestants, and cytochrome P450 enzyme inducers. Continuous monitoring for montelukast efficacy is recommended when concurrently taking cytochrome P450 enzyme inducers.
Drug-drug interactions considered clinically relevant for zafirlukast are summarized in Table 3. Only those drug-drug interactions identified as severe or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
zafirlukast | erythromycin, clarithromycin | decreased zafirlukast concentrations; mechanism unknown | monitor patient for lack of response to zafirlukast therapy; may consider azithromycin or montelukast as alternatives | moderate (CP) |
zafirlukast | drugs metabolized by CYP2C9 (e.g., warfarin, phenytoin) | increased concentrations of drugs metabolized by CYP2C9 due to zafirlukast enzyme inhibition; prothrombin time increased by 35% with warfarin-zafirlukast combination | monitor for increased adverse events (e.g., regularly assess PT or INR with warfarin-zafirlukast combination, phenytoin levels) | major (CP) |
zafirlukast | other drugs metabolized by CYP3A4 (e.g., dofetilide, ergot alkaloids, aripiprazole, cilostazol) | increased concentration of drugs metabolized by CYP3A4 due to CYP3A4 inhibition by zafirlukast | carefully monitor patient therapy for potentially enhanced pharmacologic effects and toxicity | major (CP) |
zafirlukast | pimozide | increased pimozide concentrations resulting in QTc prolongation and ventricular arrhythmias due to CYP3A4 inhibition by zafirlukast | contraindicated | severe (CP) |
zafirlukast | saquinavir (boosted with ritonavir) | saquinavir and zafirlukast are CYP3A4 inhibitors; combined use may increase saquinavir serum levels and potentially result in life-threatening arrhythmias (including torsades de pointes) | contraindicated | severe (CP) |
zafirlukast | theophylline | increased theophylline concentration due to CYP 1A2 inhibition by zafirlukast and/or decreased zafirlukast serum levels | monitor for theophylline toxicity and/or reduced zafirlukast efficacy | moderate (CP) |
Legend:
- *CP = Clinical Pharmacology
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: June 14, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed June 14, 2023.
- Montelukast (Singulair®) package insert. Organon LLC, June 2021.
- Zafirlukast (Accolate®) package insert. Strides Pharma Science Limited, December 2022.
- U.S. Department of Health and Human Services. National Institutes of Health. National Heart, Lung and Blood Institute. National Asthma Education and Prevention Program. Expert Panel 3: guidelines for the diagnosis and management of asthma. Full report 2007. NIH Publication No. 08-4051. Accessed June 14, 2023.
- National Heart, Lung, and Blood Institute. 2020 focused updates to the asthma management guidelines: a report from the national asthma education and prevention program coordinating committee expert panel working group. National Institutes of Health. December 2020. Accessed June 14, 2023.
- Global Initiative for Asthma. Global strategy for asthma management and prevention. Updated 2022. Available at: https://ginasthma.org/gina-reports/. Accessed June 14, 2023.
- Zileuton extended release oral tablets package insert. Rising Pharmaceuticals, Inc., March 2023.
Low-Molecular-Weight Heparins
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 2022; March 2020; March 2018; May 2017; April 2015; Feb. 2015; May 2013; June 2011; Jan. 2009; Aug. 2003; July 2002; July 2001; Aug. 2000.
- Initially developed
- Aug. 1999
1. Dosage
1.1. Adults
Low-molecular-weight heparins (LMWH) are FDA-approved in adults to prevent deep vein thrombosis (DVT) in patients undergoing abdominal surgery, hip replacement surgery, as well as those medical patients with acute illness and severely limited mobility, and prevent ischemic complications of unstable angina and non-Q-wave myocardial infarction1-4. Enoxaparin is also indicated to prevent DVT in patients requiring knee replacement surgery, treat inpatient DVT with or without pulmonary embolism (PE), treat outpatient acute DVT without PE, and treat acute ST-segment elevation myocardial infarction (STEMI) in patients managed medically or with subsequent percutaneous coronary intervention, while dalteparin is FDA-approved to treat venous thromboembolism (VTE) to reduce recurrence in cancer patients1-4. However, dalteparin is not FDA-approved to treat acute venous thromboembolism in adults1,2,4. Adult dosages are dependent upon therapeutic diagnosis, body weight, and renal function and are summarized in Table 1. In some circumstances (e.g., weight-based dosages), maximum daily dosages are not readily identifiable.
Treatment Indication | Drug Name | Maximum Recommended Dosage - Standard | Maximum Recommended Dosage - Severe Renal Impairment (CrCl less than 30 ml/min) |
---|---|---|---|
Deep vein thrombosis (DVT)/pulmonary embolus (PE) prophylaxis for hip replacement surgery | Enoxaparin (Lovenox®) | 30 mg SC every 12 hours or 40 mg subcutaneously (SC) once daily | 30 mg SC once daily |
Deep vein thrombosis (DVT)/pulmonary embolus (PE) prophylaxis for hip replacement surgery | Dalteparin (Fragmin®) | 5000 IU SC once daily | --- |
DVT/PE prophylaxis for knee replacement surgery | Enoxaparin | 30 mg SC every 12 hours | 30 mg SC once daily |
DVT/PE prophylaxis for abdominal surgery | Enoxaparin | 40 mg SC once daily | 30 mg SC once daily |
DVT/PE prophylaxis for abdominal surgery | Dalteparin |
moderate risk: 2500 IU SC once daily high risk: 5000 IU SC once daily |
--- |
DVT prophylaxis for acute illness and significantly limited mobility | Enoxaparin | 40 mg SC once daily | 30 mg SC once daily |
DVT prophylaxis for acute illness and significantly limited mobility | Dalteparin | 5000 IU SC once daily | --- |
Outpatient DVT treatment without PE, co-administered with warfarin | Enoxaparin | 1 mg/kg SC every 12 hours | 1 mg/kg SC once daily |
DVT/PE treatment in cancer patients | Dalteparin |
month 1: 200 IU/kg SC once daily month 2-6: 150 IU/kg SC once daily (maximum total daily dose = 18,000 IU) |
---* |
Inpatient DVT treatment with or without PE, co-administered with warfarin | Enoxaparin | 1 mg/kg SC every 12 hours or 1.5 mg/kg SC daily | 1 mg/kg SC once daily |
Unstable angina/non-Q-wave myocardial infarction (MI), when co-administered with aspirin | Enoxaparin | 1 mg/kg SC every 12 hours | 1 mg/kg SC once daily |
Unstable angina/non-Q-wave myocardial infarction (MI), when co-administered with aspirin | Dalteparin | 120 IU/kg SC every 12 hours (maximum single dose = 10,000 units) | --- |
Acute STEMI | Enoxaparin | Less than 75 years: 30 mg IV bolus x 1 + 1 mg/kg SC, followed by 1 mg/kg SC every 12 hours with aspirin | 30 mg IV bolus x1 + 1 mg/kg SC, followed by 1 mg/kg SC once daily with aspirin |
Acute STEMI | Enoxaparin | Greater than or equal to 75 years: 0.75 mg/kg SC every 12 hours with aspirin (no bolus) | 1 mg/kg SC once daily with aspirin (no bolus) |
Legend:
- * In severe renal impairment in cancer patients, monitor anti-Xa levels to determine dalteparin dose necessary to achieve anti-Xa levels in the range of 0.5 to 1.5 IU/ml.
1.2. Pediatrics
Safety and efficacy of enoxaparin for use in children younger than 18 years of age have not been established1-3. Dalteparin is FDA approved to treat VTE to reduce VTE recurrence in pediatric patients greater than or equal to 1 month of age1,2,4. Dalteparin pediatric dosages are summarized in Table 2. Dosages exceeding these recommendations will be reviewed.
Treatment Indication | Drug Name | Maximum Recommended Dosage |
---|---|---|
Venous thromboembolism treatment | Dalteparin |
|
2. Duration of Therapy
2.1. Adults
When prescribed as preventive therapy, LMWH should be administered until the risk of deep venous thrombosis has diminished. When utilized in the management of DVT and pulmonary embolism, warfarin therapy is typically initiated within 72 hours of enoxaparin therapy. Enoxaparin is continued until a therapeutic anticoagulant effect with warfarin has been achieved1-3 . If using Direct-Acting Oral Anticoagulant (DOAC) therapy, then LMWH is typically discontinued upon initiation of DOAC therapy1,2,5-8. LMWH treatment duration varies with respect to therapeutic indication and is summarized in Table 3.
Treatment Indication | Drug Name | Treatment Duration Range | Maximum Treatment Duration |
---|---|---|---|
DVT/PE prophylaxis for hip replacement surgery | Enoxaparin | 7 to 10 days^ | 21 days^ |
DVT/PE prophylaxis for hip replacement surgery | Dalteparin | 5 to 10 days | 14 days^ |
DVT/PE prophylaxis for knee replacement surgery | Enoxaparin | 7 to 10 days | 14 days^ |
DVT/PE prophylaxis for abdominal surgery | Enoxaparin | 7 to 10 days | 12 days |
DVT/PE prophylaxis for abdominal surgery | Dalteparin | 5 to 10 days | 10 days |
DVT/PE prophylaxis for acute illness and significantly limited mobility | Enoxaparin | 6 to 11 days | 14 days |
DVT/PE prophylaxis for acute illness and significantly limited mobility | Dalteparin | 12 to 14 days | 14 days |
DVT/PE treatment in cancer patients | Dalteparin | 6 months | 6 months |
Outpatient DVT treatment without pulmonary embolus (PE) | Enoxaparin | 7 days | 17 days |
Inpatient DVT treatment with or without PE | Enoxaparin | 7 days | 17 days |
Unstable angina/non-Q-wave myocardial infarction (MI) | Enoxaparin | 2 to 8 days | 12.5 days |
Unstable angina/non-Q-wave myocardial infarction (MI) | Dalteparin | 5 to 8 daysup to 8 days or hospital discharge, whichever is first | 8 days |
Acute STEMI | Enoxaparin | not determined |
Legend:
- ^In patients undergoing orthopedic surgery, dalteparin and enoxaparin may be continued for 28 to 35 days13.
2.2. Pediatrics
Although treatment durations have not been solidified, experts recommend that dalteparin therapy should be continued for less than or equal to 3 months in pediatric patients with provoked DVT or PE and up to 12 months (range, 6 to 12 months) in pediatric patients with unprovoked DVT or PE15. Dalteparin treatment recommendations for pediatric patients are summarized in Table 4.
Treatment Indication | Drug Name | Treatment Duration Range | Maximum Treatment Duration |
---|---|---|---|
Venous thromboembolism treatment | Dalteparin | 3 to 12 months | 12 months |
3. Duplicative Therapy
Concurrent administration of multiple LMWH products does not provide additional therapeutic benefit and is not recommended. Patient profiles containing concomitant prescriptions for two or more LMWH products will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for LMWHs are summarized in Table 5. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
LMWHs | defibrotide | enhances LMWH pharmacologic effects, increasing bleeding risk | avoid concurrent use | contraindicated (DrugReax); 1-severe (CP) |
LMWHs | drugs affecting hemostasis (e.g., anticoagulants, NSAIDs) | combined use may produce additive prolongation of bleeding time and increased bleeding risk, including gastrointestinal bleeding; prolonged bleeding risk may persist for several days following LMWH discontinuation; spinal, epidural hematomas reported with enoxaparin use in patients receiving spinal or epidural anesthesia (many also receiving drugs that affect hemostasis like NSAIDs) | avoid combination, if possible; discontinue drugs that affect hemostasis prior to initiating LMWH therapy; non-acetylated salicylate may be administered in conjunction with LMWH to avoid antiplatelet activity; acetaminophen, narcotic analgesics additional alternative analgesics for use in patients without inflammatory pain requiring LMWH therapy; if coadministration necessary, monitor closely for clinical, laboratory bleeding complications | major (DrugReax) apixaban: 1-severe (CP); other DOACs: 2- major (CP) |
LMWHs | SSRIs, SNRIs | combined use may increase bleeding event risk (e.g., ecchymosis, epistaxis, hematoma, petechiae, life-threatening hemorrhages) as SSRIs and SNRIs may mechanistically interfere with platelet function since serotonin contributes to hemostasis | patients requiring adjunctive therapy should be closely monitored for bleeding, with treatment adjustments as necessary, when doses are modified or therapy is initiated or discontinued | major (DrugReax); 2-major (CP) |
Legend:
- +CP = Clinical Pharmacology
- DOACs = direct oral anticoagulants
- LMWHs = low-molecular-weight heparins
- NSAIDs = nonsteroidal anti-inflammatory drugs
- SNRIs = serotonin-norepinephrine reuptake inhibitors
- SSRIs = selective serotonin reuptake inhibitors
5. References
- DRUGDEX® System (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: March 17, 2022).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: https://www-clinicalkey-com.ezproxy.lib.utexas.edu/pharmacology/. Accessed March 17, 2022.
- Enoxaparin subcutaneous/intravenous injection (Lovenox®) package insert. Sanofi-Aventis, December 2021.
- Dalteparin subcutaneous injection (Fragmin®) package insert. Pfizer, September 2021.
- Edoxaban oral tablets (Savaysa®) package insert. Daiichi Sankyo Inc., September 2021.
- Dabigatran oral capsules (Pradaxa®) package insert. Boehringer Ingelheim Pharmaceuticals Inc., June 2021.
- Rivaroxaban oral tablets (Xarelto®) package insert. Janssen Pharmaceuticals, Inc., January 2022.
- Apixaban oral tablets (Eliquis®) package insert. E.R. Squibb & Sons, LLC., September 2021.
- Hong J, Ahn SY, Lee YJ, et al. Updated recommendations for the treatment of venous thromboembolism. Blood Res. 2021;56(1):6-16.
- Gary H. Lyman, Marc Carrier, Cihan Ay, et al. American Society of Hematology 2021 guidelines for management of venous thromboembolism: prevention and treatment in patients with cancer. Blood Adv 2021; 5 (4): 927–974.
- Holger J. Schünemann, Mary Cushman, Allison E. Burnett, et al. American Society of Hematology 2018 guidelines for management of venous thromboembolism: prophylaxis for hospitalized and nonhospitalized medical patients. Blood Adv 2018; 2 (22): 3198–3225.
- Stevens SM, Woller SC, Kreuziger LB, et al. Executive summary: antithrombotic therapy for vte disease: second update of the chest guideline and expert panel report. CHEST. 2021;160(6):2247-2259.
- Falck-Ytter Y, Francis CW, Johanson NA, et al. Prevention of VTE in orthopedic surgery patients: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Chest. 2012 Feb;141(2 Suppl):e278S-e325S.
- Kearon C, Akl EA, Ornelas J, et al. Antithrombotic therapy for VTE disease. CHEST guideline and expert panel report. Chest. 2016;149(2):315-52.
- Monagle P, Cuello CA, Augustine C, et al. American Society of Hematology 2018 guidelines for management of venous thromboembolism: treatment of pediatric venous thromboembolism. Blood Adv. 2018;2(22):3292-316.
Mecasermin
Mecasermin - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Vendor Drug Program formulary coverage.
- Revision history
- July 21, 2023
- July 23, 2021
- May 2019
- May 2016
- Aug. 2015
- Dec. 2013
- Feb. 2012
- June 2010
- May 2010
- May 2007
- Initially developed
- Dec. 2006
1. Dosage
Mecasermin (Increlex) is the recombinant DNA form of human insulin-like growth factor-1 (rhIGF-1). In normal circulation, over 98% of rhIGF-1 is available in bound form to IGFBP-3, which allows IGF-1 to remain inactive until released to target tissues. This reduces the potential for adverse events associated with free levels of IGF-1. In patients with growth hormone insensitivity syndrome, the serum half-life of unbound IGF-1 is decreased, as these patients have lower rhIGFBP-3 concentrations. Patients with IGF-1 gene deletion have normal levels of rhIGFBP-3. Mecasermin is FDA-approved for use in treating growth failure in children with severe primary IGF-1 deficiency (primary IGFD) or with growth hormone (GH) gene deletion who have developed neutralizing antibodies to GH. Mecasermin has also been evaluated for use in short children with low IGF-1 levels; results showed improvement in height velocities following mecasermin use compared to untreated patients after one year of treatment1-3.
1.1. Pediatrics
Mecasermin is approved for use in children 2 years of age and older, but has not been studied in adults. Mecasermin should not be used in children whose bone growth plates are closed (epiphyseal closure), as linear growth is no longer possible in these patients. Additionally, mecasermin safety and efficacy have not been determined in children younger than 2 years of age. The recommended initial mecasermin dosage is 0.04 to 0.08 mg/kg twice daily subcutaneously, which can be titrated up in increments of 0.04 mg/kg, if tolerated, to a maximum dose of 0.12 mg/kg twice daily (total: 0.24 mg/kg/day). Patient profiles containing prescriptions for doses exceeding these recommendations will be reviewed1-3 .
Mecasermin should be administered with food or a snack as IGF-1 decreases hepatic glucose production and increases peripheral glucose utilization and may induce hypoglycemia. Mecasermin administration should be withheld in patients unable or unwilling to eat a meal prior to mecasermin dosing1-3.
2. Duration of Therapy
Five clinical studies evaluated mecasermin use in 71 pediatric patients with severe primary IGF-1 deficiency (one double-blind, placebo-controlled trial and four open-label trials). Results revealed 61 patients completed at least one year of treatment and 13 patients received mecasermin therapy for 8 years. The mean change in height velocity significantly increased from baseline in mecasermin-treated patients for treatment years 1 through 6. Therapy continuation is recommended until epiphyses fuse and full growth potential is reached. However, a maximum treatment duration has not been defined for mecasermin3-7.
3. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: May 30, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed May 30, 2023.
- Mecasermin [rDnA origin] injection (Increlex®) package insert. Ipsen Biopharmaceuticals, Inc., May 2020.
- Chernausek SD, Backeljauw PF, Frane J, et al for the GH Insensitivity Syndrome Collaborative Group. Long-term treatment with recombinant insulin-like growth factor (IGF)-I in children with severe IGF-I deficiency due to growth hormone insensitivity. J Clin Endocrinol Metab. 2007;92(3):902-10.
- Bright GM, Mendoza JR, Rosenfeld RG. Recombinant human insulin-like growth factor-1 treatment: ready for primetime. Endocrinol Metab Clin N Am. 2009;38:625-38.
- Midyett LK, Rogol AD, Van Meter QL, et al. Recombinant insulin-like growth factor (IGF)-I treatment in short children with low IGF-I levels: first-year results from a randomized clinical trial. J Clin Endocrinol Metab. 2010;95: 611–9.
- Cohen J, Blethen S, Kuntze J, et al. Managing the child with severe primary insulin-like growth factor-1 deficiency (IGFD): IGFD diagnosis and management. Drugs R D. 2014;14:25-9.
Memantine
Memantine - Index
All criteria may be applied retrospectively and each set identifies prospective application is indicated with an asterisk [*]. The information contained is for the convenience of the public. The Texas Health and Human Services Commission is not responsible for any errors in transmission or any errors or omissions in the document.
- Revision history
- July 21, 2023
- July 23, 2021
- May 2019
- May 2017
- Nov. 2015
- March 2014
- March 2012
- Initially developed
- April 2010
1. Dosage
1.1. Adults
Memantine, a non-competitive N-methyl D-aspartate (NMDA) receptor antagonist, is FDA-approved for use in the palliative management of moderate-to-severe Alzheimer’s disease. Glutamate, the key excitatory neurotransmitter in the central nervous system, is released into synapses when certain neurons die and activates NMDA receptors, causing over excitation, an influx of calcium ions and, ultimately, death of downstream neurons. NMDA receptor activation is thought to be one of the main causes of neurodegeneration in various types of dementia, including Alzheimer’s-associated dementia. Memantine exerts pharmacologic effects by binding to NMDA receptors thus blocking activation by glutamate. However, memantine has not been shown to delay or prevent neurodegeneration in Alzheimer’s disease patients1-4.
Memantine is available as an immediate-release (IR) tablet and solution as well as extended-release (ER) capsule. A combination product containing donepezil and memantine extended-release (Namzaric®) is also available for use in patients with moderate to severe Alzheimer’s dementia stabilized on donepezil. Acetylcholinesterase inhibitors like donepezil exert pharmacologic effects by increasing availability of intrasynaptic acetylcholine in the presence of intact cholinergic neurons. Alzheimer’s disease is associated with significant losses in cholinergic neurons and decreased concentrations of acetylcholine, a neurotransmitter significantly involved in learning and memory processes.
Recommended memantine and memantine/donepezil dosages are summarized in Table 1. Patient profiles documenting dosages exceeding these recommendations will be reviewed.
In patients with severe renal impairment (creatinine clearance 5-29 mL/min, based on Cockcroft-Gault equation), the memantine target IR dose should be reduced to 5 mg orally twice daily, while memantine ER maximum dosages should not exceed 14 mg once daily. Patients with severe renal impairment (CrCl 5-29 mL/min) stabilized on memantine 5 mg twice daily immediate-release or 14 mg daily extended-release and donepezil 10 mg daily may utilize memantine/donepezil combination therapy in doses not exceeding 14 mg/10 mg daily.
Drug Name | Dosage Form/Strength | Titration Dose ^ | Maximum Recommended Dosage |
---|---|---|---|
memantine IR* (Namenda®) | 5 mg, 10 mg tablets 2 mg/ml oral solution |
Week 1: 5 mg orally once daily Week 2: 5 mg orally twice daily Week 3: 10 mg in am, 5 mg in pm Week 4: 10 mg orally twice daily |
20 mg/day, in divided doses |
memantine ER+ (Namenda XR®) | 7 mg, 14 mg, 21 mg, 28 mg capsules | Week 1: 7 mg orally once daily Week 2: 14 mg orally once daily Week 3: 21 mg orally once daily Week 4: 28 mg orally once daily |
28 mg/day as a single dose |
Legend:
- *IR = immediate-release
- +ER = extended-release
- ^Titrate in weekly intervals to next dose, only if previous dose tolerated
Drug Name | Dosage Form/Strength | Titration Dose^ | Maximum Recommended Dosage |
---|---|---|---|
memantine extended-release/donepezil (Namzaric®) | 7 mg/10 mg, 14 mg/ 10 mg, 21 mg/ 10 mg, 28 mg/ 10 mg capsules |
|
28 mg/10 mg once daily |
Legend:
- ^ Titrate in weekly intervals to next dose, only if previous dose tolerated
- * Titration schedule indicated for patients who are stabilized on donepezil and not currently on memantine
While Tariot et al. have shown beneficial improvements in cognitive and behavioral performance when memantine is administered in combination with donepezil, a recent trial by Howard and cohorts and systematic review by Tricco et al. revealed that monotherapy with memantine or donepezil was significantly better than no therapy, but combined therapy did not produce significant improvements in cognitive and functional outcomes compared to donepezil alone. Although not FDA-approved, memantine therapy has demonstrated some efficacy in treating mild-to-moderate vascular dementia and Parkinson’s disease dementia. Memantine has been approved as an extended-release formulation to simplify the dosage regimen and improve compliance/adherence.
1.2. Pediatrics
Memantine is not recommended for use in children and adolescents as safety and efficacy have not been established in the pediatric population.
2. Duration of Therapy
Memantine may be prescribed chronically until the dementia associated with Alzheimer’s disease becomes unresponsive to therapy.
3. Duplicative Therapy
Adjunctive administration of memantine with other NMDA antagonists, such as amantadine and dextromethorphan, has not been clinically evaluated. Therefore, memantine should be prescribed cautiously, if at all, with other available NMDA antagonists.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for memantine are summarized in Table 3. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
memantine, memantine/ donepezil | alkalinizing agents (e.g., select carbonic anhydrase inhibitors, sodium bicarbonate) | memantine clearance reduced by about 80% in alkaline conditions (pH greater than or equal to 8); adjunctive administration with alkalinizing agents may decrease memantine elimination and increase memantine serum levels and potential for increased pharmacologic/adverse effects | administer drug combination cautiously together; monitor patients for increased pharmacologic/adverse effects | 3-moderate (CP) |
memantine, memantine/ donepezil | other drugs excreted by renal tubular secretion (e.g., amiloride, cimetidine, dofetilide, nicotine, quinidine, ranitidine) | memantine eliminated by renal tubular cationic transport; combined administration may result in altered serum levels of both memantine and other drugs excreted by renal tubular secretion due to competition for transport system; elevated dofetilide levels may increase potential for arrhythmias, including torsades de pointes | monitor patient responses, observe for adverse effects or loss of efficacy, and adjust doses as necessary | dofetilide, procainamide, quinidine: 2-major; all other drugs: 3-moderate (CP) |
Legend:
- #CP = Clinical Pharmacology
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed May 31, 2023.
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: May 31, 2023).
- Memantine tablets/oral solution (Namenda®) package insert. Allegan USA, Inc., November 2018.
- Memantine extended-release capsules (Namenda XR®) package insert. Allergan USA, Inc., November 2019.
- Memantine and donepezil extended-release capsules (Namzaric®) package insert. Allergan USA, Inc., January 2019.
- Tariot PN, Farlow MR, Grossberg GT, et al, for the Memantine Study Group. Memantine treatment in patients with moderate to severe Alzheimer disease already receiving donepezil: a randomized controlled trial. JAMA. 2004;291:317-24.
- Howard R, McShane R, Lindesay J, et al. Donepezil and memantine for moderate-to-severe Alzheimer’s disease. N Engl J Med. 2012;366:893-903.
- Tricco AC, Ashoor HM, Soobiah C, et al. Comparative effectiveness and safety of cognitive enhancers for treating Alzheimer’s disease: systematic review and network metaanalysis. J Am Geriatr Soc. 2018;66(1):170–8.
- Emre M, Tsolaki M, Bonuccelli U, et al. Memantine for patients with Parkinson’s disease dementia or dementia with Lewy bodies: a randomised, double-blind, placebo-controlled trial. Lancet Neurol. 2010;9:969–77.
- Leroi I, Overshott R, Byrne EJ, et al. Randomized controlled trial of memantine in dementia associated with Parkinson's disease. Mov Disord. 2009;24(8):1217-21.
Nebulized Bronchodilators
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- April 2022; March 2020; March 2018; Feb. 2016; June 2014; Nov. 2012; Sept. 2012; Oct. 2010.
- Initially developed
- Feb. 2008
1. Dosage
1.1. Adults
Short-acting, nebulized beta2-adrenergic bronchodilators are FDA-approved for use in the relief of acute, potentially recurrent bronchospasm in patients with reversible obstructive airway disease1-6. Long-acting, nebulized beta2-adrenergic agents are FDA-approved for use as maintenance therapy in patients with chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema1,2,7,8. Revefenacin (Yupelri®) is FDA-approved as a maintenance therapy for COPD1,2,9. A nebulized formulation of the long acting antimuscarinic anticholinergic agent glycopyrrolate (Lonhala Magnair®) was approved by the FDA in 2017 for the long-term maintenance treatment of airflow obstruction in patients with COPD1,2,10. The anticholinergic, ipratropium, is FDA-approved to manage bronchospasm associated with exacerbations of COPD, including bronchitis and emphysema, either as monotherapy or in combination with beta adrenergic agents1,2,11. While not FDA-approved, the Expert Panel 3 guidelines from the National Heart Lung and Blood Institute document benefit when multiple ipratropium doses are administered adjunctively with beta2-agonists in the emergency department to manage more severe acute asthma exacerbations12. Additionally, the Global Initiative for Asthma (GINA) guidelines state that ipratropium may be considered a potential alternative bronchodilator for routine relief of asthma symptoms, and it may be used in combination with a short-acting beta2-adrenergic agonist in the emergency treatment of moderate to severe exacerbations.13 Ipratropium/racemic albuterol combination therapy is FDA-approved for use as second-line therapy in adult COPD patients who continue to experience bronchospasm with an aerosol bronchodilator and require a second bronchodilator1,2,14. Recommended adult dosages are summarized in Tables 1-5. Patient profiles with dosages exceeding these recommendations will be reviewed.
Treatment Indication | Drug Name | Dosage Strength | Maximum Recommended Dosage |
---|---|---|---|
Bronchospasm in reversible obstructive airway disease (e.g., asthma) | Racemic albuterol (various generics) | 2.5 mg/3 mL; (0.083%); 2.5 mg/0.5 mL (0.5%) | 2.5 mg four times daily by nebulization* (maximum dose per day: 10 mg) |
Bronchospasm in reversible obstructive airway disease (e.g., asthma) | Levalbuterol (Xopenex®, generics) | 0.31 mg/3 ml; 0.63 mg/3 ml; 1.25 mg/3 ml; 1.25 mg/0.5 ml | 1.25 mg three times daily by nebulization^ |
Legend:
- *Manufacturers of racemic albuterol state that more frequent administration or higher doses not recommended; however, in severe asthma exacerbations, the National Asthma Education and Prevention Program Expert Panel (NAEPPEP) recommends racemic albuterol doses of 2.5-5 mg every 20 minutes for 3 doses, then 2.5-10 mg every 1-4 hours as needed, or 10-15 mg/hour by continuous nebulization12
- ^For acute asthma exacerbations, NAEPPEP recommends levalbuterol doses of 1.25-2.5 mg every 20 minutes for 3 doses, then 1.25-5 mg every 1-4 hours as needed12
Treatment Indication | Drug Name | Dosage Strength | Maximum Recommended Dosage |
---|---|---|---|
Chronic obstructive pulmonary disease (COPD) | Ipratropium (various generics) | 500 mcg/2.5 ml (0.02%) | 500 mcg four times daily, with doses 6 hours apart |
Treatment Indication | Drug Name | Dosage Strength | Maximum Recommended Dosage |
---|---|---|---|
Chronic obstructive pulmonary disease (COPD) | Arformoterol (Brovana®, generic) | 15 mcg/2 ml | 15 mcg twice daily by nebulization |
COPD | Formoterol (Perforomist®, generic) | 20 mcg/2 ml | 20 mcg twice daily by nebulization |
Treatment Indication | Drug Name | Dosage Strength | Maximum Recommended Dosage |
---|---|---|---|
Chronic obstructive pulmonary disease (COPD) – maintenance therapy | Glycopyrrolate (Lonhala® Magnair®) | 25 mcg/ mL | 25 mcg twice daily by nebulization! |
COPD – maintenance therapy | Revefenacin (Yupelri®) | 175 mcg/3 ml | 175 mcg once daily |
Legend:
- ! Lonhala® Magnair® is approved for use with the Magnair® nebulization system10
Treatment Indication | Drug Name | Dosage Strength | Maximum Recommended Dosage |
---|---|---|---|
Bronchospasm associated with chronic obstructive pulmonary disease (COPD) for patients requiring a second bronchodilator | Ipratropium/ racemic albuterol (generic) | 0.5 mg/3 mg# per 3 ml | 3 ml 6 times per day^ |
Legend:
- # 2.5 mg racemic albuterol base
- ^ For moderate asthma exacerbations, NAEPPEP recommends ipratropium/albuterol doses of 3 mL (ipratropium bromide 0.5mg/ albuterol base 2.5 mg) every 4-6 hours in the emergency setting. For severe asthma exacerbations, NAEPPEP recommends ipratropium/albuterol doses of 3 mL (ipratropium bromide 0.5mg/ albuterol base 2.5 mg) every 20 minutes for 3 doses, then as needed for up to 3 hours in the emergency setting12
1.2. Pediatrics
Short-acting beta2-adrenergic bronchodilators are FDA-approved to manage bronchospasm episodes in pediatric patients with reversible obstructive airway disease1-6. Racemic albuterol nebulized solution is FDA-approved to provide bronchospasm relief in children 2 years of age and older with reversible obstructive airway disease1-5. Levalbuterol nebulized solutions are FDA-approved for use in the management and prevention of acute asthma exacerbations in children 6 years of age and older1,2,6. Ipratropium is FDA-approved for use in children 12 years of age and older for management of bronchospasm associated with COPD1,2,11. Recommended dosages are summarized in Tables 6 and 7. Patient profiles with dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Strength | Maximum Recommended Dosage |
---|---|---|
Racemic albuterol (generics) | 0.63 mg/3 ml (0.021%) or 1.25 mg/3 ml (0.042%) | 2-12 years of age: 1.25 mg 4 times daily (5 mg/day) + |
Racemic albuterol (generics) | 2.5 mg/3 ml (0.083%); 2.5 mg/ 0.5 ml (0.5%) | 2-12 years of age: 2.5 mg 4 times daily (10 mg/day) *+ |
2.5 mg/ 0.5 ml (0.5%) | Greater than 12 years of age: 2.5 mg 4 times daily (10 mg/day)+ | |
Levalbuterol (Xopenex®, generics) | 0.31 mg/3 ml; 0.63 mg/3 ml; 1.25 mg/3 ml; 1.25 mg/0.5 ml |
|
Legend:
- * Children weighing less than15 kg who require less than 2.5 mg/dose should use the 0.5% albuterol inhalation solution instead of the 0.083% albuterol inhalation solution3
- + Manufacturers state that more frequent administration or higher doses not recommended; however, in patients 12 years or younger with severe asthma exacerbations, the National Asthma Education and Prevention Program Expert Panel (NAEPPEP) recommends racemic albuterol doses of 0.15 mg/kg (minimum dose 2.5 mg) for 3 doses then 0.15-0.3 mg/kg (up to 10 mg) every 1-4 hours as needed, or 0.5 mg/kg/hour by continuous nebulization. In patients greater than 12 years of age the NAEPPEP recommends 2.5-5 mg every 20 minutes for 3 doses, then 2.5-10 mg every 1-4 hours as needed, or 10-15 mg/hour by continuous nebulization12
- # For acute asthma exacerbations in children 12 years and younger, NAEPPEP recommends levalbuterol doses of 0.075 mg/kg (1.25 mg minimum) every 20 minutes x 3 doses, then 0.075—0.15 mg/kg (5 mg max) every 1—4 hours as needed12
- ^ For acute asthma exacerbations in children greater than 12 years, NAEPPEP recommends levalbuterol doses of 1.25-2.5 mg every 20 minutes for 3 doses, then 1.25-5 mg every 1-4 hours as needed12
Drug Name | Dosage Strength | Maximum Recommended Dosage |
---|---|---|
Ipratropium (various generics) | 500 mcg/2.5 ml (0.02%) | Greater than or equalt to 12 years of age: 500 mcg 4 times daily, every 6 hours apart |
Nebulized long-acting beta2-adrenergic bronchodilators and long-acting anticholinergics as well as combination therapy with ipratropium and racemic albuterol are not indicated for use in pediatric patients as safety and efficacy of these agents in this patient population have not been established1,2,7-10,14.
2. Duration of Therapy
Administration of short-acting, nebulized beta2-adrenergic bronchodilators may be repeated indefinitely for acute asthma exacerbations, as asthma is a chronic, lifelong disease1-5. However, administering short-acting, nebulized beta2-adrenergic agents for longer than 48 hours with each exacerbation is indicative of worsening asthma control12,15. Utilization of large quantities of short-acting beta2-adrenergic nebulizer solutions within a 90-day time period is not recommended and will be reviewed.
Ipratropium, long-acting, nebulized beta2-adrenergic bronchodilators, and combination therapy with ipratropium/racemic albuterol are indicated for the management of COPD, a chronic, lifelong disease, and may be continued indefinitely under accepted guidelines16.
3. Duplicative Therapy
Adjunctive administration of multiple short-acting or long-acting, nebulized beta2-adrenergic bronchodilators does not provide additional clinical benefit and may result in additive adverse effects1-8. Combined administration of multiple nebulized short-acting or long-acting beta2-adrenergic bronchodilators is not recommended and will be reviewed.
Acute asthma exacerbations require treatment with short-acting, beta2-adrenergic agents even though maintenance therapy with a long-acting, beta2-adrenergic agent may be prescribed concomitantly1-8. Patients may receive a long- and short-acting beta2-adrenergic drug concurrently for short time periods to manage acute attacks. Nebulized formoterol or arformoterol used in conjunction with excessive administration of a short-acting beta2-adrenergic drug (i.e., frequent refill of short-acting beta2-adrenergic agonist within a 30-day time period) is not recommended and will be reviewed.
Concurrent administration of ipratropium nebulized solution monotherapy with ipratropium/racemic albuterol combination therapy does not provide additional clinical benefit and may result in additive adverse effects1,2,14. Combined administration of ipratropium and ipratropium combination therapy is not recommended and will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for nebulized bronchodilators are summarized in Table 3. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed:
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
beta2-agonists | MAOIs+ (including linezolid) | concurrent administration of MAOIs with beta2-agonists may increase risk of tachycardia, hypomania, or agitation due to potentiation of effects on vascular system | administer combination cautiously or within 2 weeks of MAOI discontinuation; observe patients for adverse effects | major (DrugReax) 1-severe (CP) |
beta2-agonists | TCAs^ | concurrent administration of TCAs with beta2-agonists may potentiate effects on cardiovascular system and increase risk of adverse events | cautiously administer TCAs and beta2-agonists together, including within 2 weeks of TCA discontinuation; monitor patients and observe for changes in blood pressure, heart rate and ECG# | moderate (DrugReax) moderate (CP) |
beta2-agonists | beta blockers | concurrent administration may decrease effectiveness of beta-adrenergic blocker or beta-2 agonists | combination not recommended in asthma/COPD patients; if adjunctive therapy necessary, utilize cardioselective beta blocker (e.g., atenolol, bisoprolol) | major (DrugReax) 2-major (CP) |
beta2-agonists | diuretics | potential for worsening of diuretic- associated hypokalemia and/or ECG changes with beta2-agonist concurrent administration, especially with high beta2-agonist doses | administer combination cautiously; monitor potassium levels as necessary | 3-moderate (CP) |
beta2-agonists | atomoxetine | concurrent administration may increase risk of cardiovascular adverse effects (e.g., tachycardia, hypertension); interaction may be less likely with inhaled beta2-agonists | monitor patients for increased cardiovascular adverse effects | major (DrugReax) 3-moderate (CP) |
beta2-agonists | QTc interval-prolonging medications (e.g., class I, III anti-arrhythmics, tricyclic antidepressants, dolasetron) | concurrent administration may increase risk of cardiotoxicity (e.g., life-threatening arrhythmias, cardiac arrest) as arformoterol and formoterol may cause QTc interval prolongation and, rarely, torsades de pointes | administer combination cautiously | 1-severe, 2-major, 3-moderate (CP) |
glycopyrrolate | anticholinergics | concurrent administration may produce additive anticholinergic effects and potential for increased adverse effects | cautiously administer glycopyrrolate with other anticholinergics; monitor for increased adverse effects | Major (Micromedex) |
ipratropium, ipratropium/racemic albuterol | antimuscarinics | concurrent administration may produce additive anticholinergic effects and potential for increased adverse effects | cautiously administer ipratropium with other antimuscarinics; monitor for increased adverse effects | minor (DrugReax) 3-moderate (CP) |
5. References
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed March 23, 2022.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2020. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed March 23, 2022.
- Albuterol sulfate inhalation solution 0.083% package insert. Nephron Pharmaceuticals Corp., August 2018.
- Albuterol sulfate inhalation solution 0.5% package insert. Nephron Pharmaceuticals Corporation, February 2007.
- Albuterol sulfate solution 0.63 mg/3 ml, 1.25 mg/3 ml package insert. Mylan Pharmaceuticals, Inc., October 2021.
- Levalbuterol inhalation solution (Xopenex®) package insert. Akorn, Inc., February 2022.
- Arformoterol inhalation solution (Brovana®) package insert. Sunovion Pharmaceuticals Inc., May 2021.
- Formoterol inhalation solution (Perforomist®) package insert. Mylan Specialty, May 2019.
- Revefenacin inhalation solution (Yupelri®) package insert. Mylan Specialty LP, November 2021.
- Glycopyrrolate inhalation solution (Lonhala Magnair®) package insert. Sunovian Pharmaceuticals Inc., August 2020.
- Ipratropium bromide inhalation solution 0.02% package insert. Actavis Pharmaceuticals, Inc., April 2017.
- U.S. Department of Health and Human Services. National Institutes of Health. National Heart, Lung and Blood Institute. National Asthma Education and Prevention Program. Expert Panel 3: guidelines for the diagnosis and management of asthma. Full report 2007. NIH Publication No. 08-4051. Available at: http://www.nhlbi.nih.gov/guidelines/asthma/asthgdln.pdf. Accessed March 23, 2022.
- Global Initiative for Asthma. Global strategy for asthma management and prevention, 2021 update. Available at: https://ginasthma.org/wp-content/uploads/2021/05/GINA-Main-Report-2021-V2-WMS.pdf. Accessed March 23, 2022.
- Ipratropium bromide and albuterol sulfate inhalation solution package insert. Aurobindo Pharma Limited, June 2020.
- U.S. Department of Health and Human Services. National Institutes of Health. National Heart, Lung and Blood Institute. National Asthma Education and Prevention Program. 2020 focused updates to the asthma management guidelines: a report from the National Asthma Education and Prevention Program Coordinating Committee Expert Panel Working Group. Accessed March 23, 2022.
- Global Initiative for Chronic Obstructive Lung Disease. Global strategy for the diagnosis, management, and prevention of chronic obstructive lung disease. 2022 Report. Available at: https://goldcopd.org/2022-gold-reports-2/. Accessed March 23, 2022.
Nitazoxanide (Alinia)
Nitazoxanide (Alinia) - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Oct. 13, 2023
- Oct. 2021
- Sept. 2019
- Sept. 2017
- Aug. 2015
- Dec. 2013
- Feb. 2012
- April 2010
- March 2007.
- Initially developed
- Jan. 2007
1. Dosage
Nitazoxanide is available as a 500 mg tablet and a 100 mg/5 ml oral suspension. The 500 mg tablet contains greater than recommended amounts of nitazoxanide for pediatric dosing and should not be used in pediatric patients younger than 12 years 1-3.
1.1. Adults
Nitazoxanide is FDA-approved for the management of diarrhea caused by Giardia lamblia or Cryptosporidium parvum. Adult dosage recommendations for nitazoxanide are summarized in Table 1. Dosages exceeding these recommendations will be reviewed.
Treatment Indication | Available Dosage Strengths | Maximum Recommended Dosage |
---|---|---|
Diarrhea caused by G. lamblia or C. parvum | 500 mg tablet, 100 mg/5ml suspension | 1 tablet (500 mg) or 25 ml of oral suspension every 12 hours with food for 3 days |
Although not FDA-approved, nitazoxanide 500 mg twice daily for 10 days has demonstrated comparable efficacy to metronidazole in managing Clostridioides difficile colitis in both patients responsive and resistant to metronidazole therapy. Additionally, nitazoxanide may be proven comparable in efficacy to vancomycin in treating C. difficile colitis, although current sample sizes are too small to assess clinical significance. Although several studies have demonstrated possible efficacy and off-label use occurs, nitazoxanide is not currently a guideline recommended therapy for C. diff. infection 4-6.
Nitazoxanide has also shown benefit in treating diarrhea caused by intestinal parasites other than G. lamblia as well as rotavirus but does not yet possess FDA approval for these indications 7-11.
Nitazoxanide has improved eradication rates compared to standard triple therapy when used as part of a four-drug treatment regimen for Helicobacter pylori in treatment-naïve patients but is not FDA-approved for this indication 12-13.
Nitazoxanide, while not FDA-approved, may be considered as an alternative treatment to manage Cryptosporidium-associated diarrhea in adult and adolescent human immunodeficiency virus patients. Dosages utilized are 500 mg to 1000 mg orally twice daily for 14 days to 8 weeks in conjunction with optimized antiretroviral therapy, electrolyte replacement, treatment of symptoms as well as rehydration 14-16.
1.2. Pediatrics
Nitazoxanide is FDA-approved for the management of diarrhea caused by G. lamblia or C. parvum in pediatric patients 1 year of age and older. Nitazoxanide pediatric dosage recommendations are summarized in Table 2. Patient profiles containing dosages exceeding these recommendations will be reviewed.
Treatment Indication | Available Dosage Strengths | Maximum Recommended Dosage Per Age Group * |
---|---|---|
Diarrhea caused by G. lamblia or C. parvum | Diarrhea caused by G. lamblia or C. parvum |
|
Legend:
- * Tablets are only approved for use in children 12 years of age and older
2. Duration of Therapy
Nitazoxanide is FDA-approved for three days of therapy to manage cryptosporidiosis and giardiasis in immunocompetent adult and pediatric patients, as documented in clinical trials. Treatment durations exceeding these recommendations will be reviewed.
3. Duplicative Therapy
Concurrent administration of nitazoxanide with other approved antibiotic therapies for cryptosporidiosis and giardiasis (i.e., paromomycin, metronidazole, tinidazole, paromomycin + azithromycin) is not recommended as these combinations do not provide additional therapeutic benefit and may result in enhanced adverse events. Patient profiles containing adjunctive prescriptions for nitazoxanide and additional cryptosporidiosis or giardiasis therapy will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens that may result in clinically significant drug-drug interactions. The following drug-drug interactions are considered clinically relevant for nitazoxanide. Only those drug-drug interactions classified as clinical significance level 1/contraindicated or those considered life-threatening which have not yet been classified will be reviewed.
Highly Plasma Protein-Bound Medications
(e.g., hydantoins, salicylates, warfarin) [clinical significance level – 3- moderate (CP)]
Nitazoxanide is rapidly metabolized to tizoxanide following oral administration. Because tizoxanide is highly bound to plasma proteins (>99.9%), caution should be exercised when dosing nitazoxanide concurrently with other drugs highly protein bound possessing narrow therapeutic indices as competition for binding sites may occur with potential for toxicity. However, in an open-label, randomized, crossover study, investigators assessed nitazoxanide effects on warfarin pharmacokinetics and pharmacodynamics after a single warfarin 25 mg dose in 14 adult male volunteers and found that warfarin pharmacokinetic/pharmacodynamic parameters did not change significantly following nitazoxanide administration. Until further confirmatory data are available, it may be prudent to monitor patients for signs of warfarin toxicity and changes in INR when warfarin and nitazoxanide are administered concurrently. Similarly, until contrasting data are available, monitor patients for signs and symptoms of hydantoin or salicylate toxicity when nitazoxanide is administered adjunctively.
5. References
- IBM Micromedex DRUGDEX (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: August 25, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed August 23, 2023.
- Nitazoxanide (Alinia®) package insert. Romark Laboratories, February 2022.
- Musher DM, Logan N, Bressler AM, et al. Nitazoxanide versus vancomycin in Clostridium difficile infection: a randomized, double-blind study. Clin Infect Dis. 2009;48(4):e41-6.
- Musher DM, Logan N, Mehendiratta V, et al. Clostridium difficile colitis that fails conventional metronidazole therapy: response to nitazoxanide. J Antimicrob Chemother. 2007;59(4):705-10.
- Musher DM, Logan N, Bressler AM, et al. Nitazoxanide versus vancomycin in Clostridium difficile infection: a randomized, double-blind study. Clin Infect Dis. 2009;48(4):e41-6.
- Abaza H, El-Zayadi AR, Kabil SM, et al. Nitazoxanide in the treatment of patients with intestinal protozoan and helminthic infections: a report on 546 patients in Egypt. Curr Ther Res. 1998;59(2):116-21.
- Rossignol JF, Ayoub A, Ayers MS. Treatment of diarrhea caused by Giardia intestinalis and Entamoeba histolytica or E. dispar: a randomized, double-blind, placebo-controlled study of nitazoxanide. J Infect Dis. 2001;184(3):381-4.
- Rossignol JF, Kabil SM, El-Gohary Y, Younis AM. Nitazoxanide in the treatment of amoebiasis. Trans R Soc Trop Med Hyg. 2007;101(10):1025-31.
- Rossignol JF, Abu-Zekry M, Hussein A, Santoro MG. Effect of nitazoxanide for treatment of severe rotavirus diarrhoea: randomised double-blind placebo-controlled trial. Lancet. 2006;368(9530):124-9.
- Rossignol JF, El-Gohary YM. Nitazoxanide in the treatment of viral gastroenteritis: a randomized double-blind placebo-controlled clinical trial. Aliment Pharmacol Ther. 2006;24(10):1423-30, 2006.
- Basu PP, Rayapudi K, Pacana T, et al. A randomized study comparing levofloxacin, omeprazole, nitazoxanide and doxycycline for the eradication of Helicobacter pylori. Am J Gastroenterol. 2011;106(11):1970-5.
- Sukdong Lee, Gregory T. Sneed & Jamie N. Brown (2020) Treatment of Helicobacter pylori with nitazoxanide-containing regimens: a systematic review, Infectious Diseases, 52:6, 381-390.
- Leder K, Weller PF. Treatment and prevention of cryptosporidiosis. Post TW, ed. UpToDate. Waltham, MA: UpToDate Inc. https://www.uptodate.com (Accessed on August 3, 2021.)
- Rossignol JF, Ayoub A, Ayers MS. Treatment of diarrhea caused by Cryptosporidium parvum: a prospective randomized, double-blind, placebo-controlled study of nitazoxanide. J Infect Dis. 2001;184:103-6.
- Bailey JM, Erramouspe J. Nitazoxanide treatment for giardiasis and cryptosporidiosis in children. Ann Pharmacother. 2004;38:634-40.
- Vets E, Rossignol JF, Jackson AS. Effects of nitazoxanide on pharmacokinetics and pharmacodynamics of a single dose of warfarin. Am J Health Syst Pharm. 2009;66(9):838-42.
Non-sedating Antihistamines
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 2022, June 2020; June 2018; July 2016; May 2016; Sept. 2014; Dec. 2012; March 2011; Feb. 2011; Jan. 2011; Jan. 2008; April 2003: April 2002; April 2001; April 2000; March 1999; March 1998; Aug. 1997.
- Initially developed
- March 1997
1. Dosage
Oral non-sedating antihistamines are FDA-approved for managing urticaria and allergic rhinitis. Nasal non-sedating antihistamines as monotherapy and combination therapy are FDA-approved for treating allergic rhinitis and vasomotor rhinitis. The oral non-sedating antihistamines desloratadine and acrivastine are available only by prescription. Inhalational non-sedative antihistamines are also available; olopatadine (Patanase®) and azelastine (Astepro®) are available by prescription and azelastine (Astepro Allergy ®) are available now over the counter.
1.1. Adults
Maximum recommended daily dosages for available non-sedating antihistamines are summarized in Tables 1 and 2. Dosages identified in Texas Medicaid patient profiles exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
azelastine (Astepro®, Astepro Allergy®, generics) | **0.15% nasal solution – 205.5 mcg/spray | seasonal or perennial allergic rhinitis | 2 sprays per nostril twice daily |
azelastine (generics) | 0.1% nasal solution – 137 mcg/spray | perennial allergic rhinitis | 2 sprays per nostril twice daily |
azelastine (Astepro®, generics) | seasonal allergic rhinitis | 2 sprays per nostril twice daily | |
azelastine (generics) | vasomotor rhinitis | 2 sprays per nostril twice daily | |
cetirizine (Zyrtec®, generics) |
**tablets, chewable tablets – 5 mg, 10 mg **orally disintegrating tablets - 10 mg **liquid filled capsule – 10 mg **solution – 1 mg/mL syrup – 1 mg/ mL |
perennial or seasonal allergic rhinitis | 10 mg once daily |
cetirizine (Zyrtec®, generics) |
**liquid filled capsule – 10 mg **solution – 1 mg/mL syrup – 1 mg/mL **tablets, chewable tablets – 5 mg, 10 mg |
chronic idiopathic urticaria | 10 mg once daily |
desloratadine (Clarinex®, generics) |
tablets – 5 mg rapidly disintegrating tablets - 2.5 mg, 5 mg |
chronic idiopathic urticaria | 5 mg once daily |
desloratadine (Clarinex®, generics) | perennial or seasonal allergic rhinitis | 5 mg once daily | |
fexofenadine (Allegra®, generics, Allegra® ODT) |
**tablets – 30 mg, 60 mg, 180 mg **orally disintegrating tablets - 30 mg **suspension – 30 mg/5 mL |
allergic rhinitis | 60 mg twice daily or 180 mg once daily |
fexofenadine (Allegra®, generics, Allegra® ODT) | chronic idiopathic urticaria | 60 mg twice daily or 180 mg once daily | |
levocetirizine (Xyzal®, generics) |
**tablet – 5 mg **oral solution – 2.5 mg/5 mL |
allergic rhinitis | 5 mg once daily in evening |
levocetirizine (Xyzal®, generics) | chronic idiopathic urticaria | 5 mg once daily in evening | |
loratadine (Claritin®, Alavert®, Claritin Children’s®, Claritin RediTabs®, generics) |
**tablets – 10 mg **chewable tablets (Claritin Children’s®) – 5 mg **rapidly disintegrating tablets (Claritin RediTabs®, Alavert®) 10 mg **liquid-gel capsule – 10 mg **solution – 5 mg/5 mL |
perennial or seasonal allergic rhinitis | 10 mg once daily |
loratadine (Claritin®, Alavert®, Claritin Children’s®, Claritin RediTabs®, generics) | chronic idiopathic urticaria | 10 mg once daily | |
olopatadine (Patanase®, generics) | 0.6% nasal solution | seasonal allergic rhinitis | 2 sprays per nostril twice daily |
Legend:
- **now over-the-counter
- ODT = orally disintegrating tablet
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
azelastine/fluticasone (Dymista®, generics) | nasal suspension – 137 mcg/ 50 mcg per actuation | seasonal allergic rhinitis | 1 spray per nostril twice daily |
**cetirizine/ pseudoephedrine (Zyrtec-D®, generics) | 12-hour tablets (cetirizine 5 mg/ pseudoephedrine 120 mg/ tablet) | perennial or seasonal allergic rhinitis | 1 tablet twice daily |
**fexofenadine/ pseudoephedrine (Allegra-D®, generics) | 12-hour tablets (fexofenadine 60 mg/ pseudoephedrine 120 mg/ tablet) | seasonal allergic rhinitis | 1 tablet twice daily |
**fexofenadine/ pseudoephedrine (Allegra-D®, generics) | 24-hour tablets (fexofenadine 180 mg/ pseudoephedrine 240 mg/ tablet) | seasonal allergic rhinitis | 1 tablet once daily |
desloratadine/ pseudoephedrine (Clarinex-D® 12 hour, generics) | 12-hour tablets (2.5 mg desloratadine/ 120 mg pseudoephedrine/ tablet | seasonal allergic rhinitis | 1 tablet twice daily |
**loratadine/ pseudoephedrine (Claritin D® 12 Hour, Alavert-D®, generics) | 12-hour tablets (loratadine 5 mg/ pseudoephedrine 120 mg/ tablet) | seasonal allergic rhinitis | 1 tablet twice daily |
**loratadine/pseudoephedrine extended-release (Claritin D® 24 Hour, generics) | 24-hour tablets (loratadine 10 mg/pseudoephedrine 240 mg/tablet) | seasonal allergic rhinitis | 1 tablet once daily |
Legend:
- **now over-the-counter
1.2. Pediatrics
Oral non-sedating antihistamines are FDA-approved for use in pediatric patients for allergic rhinitis and chronic urticaria. Cetirizine and levocetirizine are FDA-approved for use in children 6 months of age and older with urticaria and seasonal allergic rhinitis. Desloratadine is FDA-approved for use in children 6 months of age and older with chronic idiopathic urticaria and perennial allergic rhinitis and 2 years of age and older for seasonal allergic rhinitis, and fexofenadine and loratadine are FDA-approved for use in children 2 years and older for allergic rhinitis. The nasal non-sedating antihistamine, azelastine 0.1% solution, is FDA-approved for use in children 2 years and older for seasonal allergic rhinitis treatment, while olopatadine, another nasal non-sedating antihistamine, is indicated for use in children 6 years and older for seasonal allergic rhinitis therapy. Azelastine 0.15% solution is approved for use in children 5 years and older for perennial allergic rhinitis; azelastine 0.1% is FDA-approved for perennial allergic rhinitis treatment in children 6 months to 11 years. Azelastine 0.1% solution is also indicated for use in pediatric patients 12 years and older with vasomotor rhinitis. Safety and efficacy of oral non-sedating antihistamine/decongestant combination products have not been established in children less than 12 years of age. Maximum recommended pediatric dosages for available non-sedating antihistamines are summarized in Tables 3 and 4. Dosages identified in Texas Medicaid patients exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
azelastine (Astepro®, Astepro Allergy®, generics) |
|
seasonal and perennial allergic rhinitis |
|
azelastine (Astepro ® generics) |
|
perennial allergic rhinitis |
|
azelastine (Astepro ® generics) | seasonal allergic rhinitis |
|
|
azelastine (generics) | vasomotor rhinitis |
|
|
cetirizine (Zyrtec®, generics) |
|
perennial or seasonal allergic rhinitis |
|
cetirizine (Zyrtec®, generics) |
|
chronic urticaria |
|
desloratadine (Clarinex®, generics) |
|
chronic idiopathic urticaria; seasonal and perennial allergic rhinitis |
|
fexofenadine (Children’s Allegra® Allergy suspension, generics) |
|
allergic rhinitis |
|
fexofenadine (Children’s Allegra® Allergy suspension, generics) |
|
allergic rhinitis |
|
fexofenadine (Children’s Allegra® Allergy suspension, generics) | chronic idiopathic urticaria |
|
|
fexofenadine (Children’s Allegra® Allergy ODT, generics) |
|
allergic rhinitis |
|
fexofenadine (Children’s Allegra® Allergy ODT, generics) | chronic idiopathic urticaria |
|
|
fexofenadine (Allegra®, generics) |
|
allergic rhinitis |
|
fexofenadine (Allegra®, generics) | chronic idiopathic urticaria |
|
|
levocetirizine (Xyzal®, generics) |
|
allergic rhinitis |
|
levocetirizine (Xyzal®, generics) | chronic idiopathic urticaria |
|
|
loratadine (Claritin®, Alavert®, Claritin Children’s®, Claritin RediTabs®, generics) |
|
perennial or seasonal allergic rhinitis |
|
loratadine oral solution 5mg/5mL | chronic idiopathic urticaria |
|
|
olopatadine (Patanase®, generics) | 0.6% nasal solution | seasonal allergic rhinitis |
|
Legend:
- **now over-the-counter
- *OTC use only indicated in patients 2 years and older
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
azelastine/fluticasone (Dymista®) | seasonal allergic rhinitis | nasal suspension – 137 mcg/ 50 mcg per actuation |
|
**cetirizine/ pseudoephedrine (Zyrtec-D®, generics) | perennial or seasonal allergic rhinitis | 12-hour tablets (cetirizine 5 mg/ pseudoephedrine 120 mg/ tablet) |
|
**fexofenadine/ pseudoephedrine (Allegra-D®, generics) | seasonal allergic rhinitis | 12-hour tablets (fexofenadine 60 mg/ pseudoephedrine 120 mg/ tablet) |
|
**fexofenadine/ pseudoephedrine (Allegra-D®, generics) | seasonal allergic rhinitis | 24-hour tablets (fexofenadine 180 mg/ pseudoephedrine 240 mg/ tablet) |
|
desloratadine/ pseudoephedrine (Clarinex-D® 12 hour, generics) | seasonal allergic rhinitis | 12-hour tablets (2.5 mg desloratadine/ 120 mg pseudoephedrine/ tablet) |
|
**loratadine/pseudoephedrine (Claritin D® 12 Hour, Alavert Allergy and Congestion D®- 12 Hour, generics) | seasonal allergic rhinitis | 12-hour tablets (loratadine 5mg/pseudoephedrine 120 mg/tablet) |
|
**loratadine/pseudoephedrine extended release (Claritin D® 24 Hour, generics) | seasonal allergic rhinitis | 24-hour tablets (loratadine 10 mg/pseudoephedrine 240 mg/tablet) |
|
Legend:
- **now over-the-counter
2. Duration of Therapy
There is no basis for limiting the duration of treatment for non-sedating antihistamines as patients may suffer from symptoms of allergic rhinitis or other chronic allergic conditions continually.
3. Duplicative Therapy
The concurrent use of two or more non-sedating antihistamines is not recommended20-23 . Additional therapeutic benefit is not experienced when several antihistamines are administered in combination1,2. Patient profiles containing concurrent prescriptions for multiple non-sedating antihistamines will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically significant for non-sedating antihistamines are summarized in Table 5. Only those drug-drug interactions classified as clinical significance level 1/ contraindicated or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level# |
---|---|---|---|---|
fexofenadine | antacids | adjunctive administration within 15 minutes of each other decreases fexofenadine bioavailability (AUC ↓’d 41%, Cmax ↓’d 43%), may reduce fexofenadine efficacy | space administration times | Moderate (DrugReax) 3- Moderate (CP) |
fexofenadine | P-glycoprotein (P-gp) inducers (e.g., rifamycins, carbamazepine, fosamprenavir) | co-administration may decrease fexofenadine serum concentrations and reduce fexofenadine efficacy; drugs such as carbamazepine, rifamycins may activate P-gp transport in small intestine (fexofenadine is substrate of this transport) and decrease fexofenadine oral absorption | monitor for decreased fexofenadine therapeutic effects | 3-moderate (Lexicomp) |
fexofenadine | P-glycoprotein (P-gp) inhibitors (e.g., etravirine) | co-administration may increase fexofenadine serum concentrations, potentially resulting in enhanced pharmacologic and adverse effects | monitor for increased fexofenadine pharmacologic effects | 3-Minor (CP) |
loratadine | amiodarone | conjunctive administration may result in reduced loratadine metabolism and enhanced loratadine pharmacologic/adverse effects; amiodarone inhibits CYP3A4, loratadine metabolized by CYP3A4; rare reports of QT interval prolongation with drug combination | use cautiously together; QT interval monitoring recommended | major (DrugReax) |
Legend:
- #CP = Clinical Pharmacology
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc; 2022. Available at: http://www.clinicalpharmacology.com. Accessed June 22, 2022.
- IBM Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.ezproxy.lib.utexas.edu/ (cited: June 22, 2022).
- Azelastine 0.1% nasal spray package insert. Amneal Pharmaceuticals LLC, December 2019.
- Azelastine (Astepro Allergy®) 0.15% HCl nasal spray. Bayer Hlthcare. June 2021.
- Azelastine 0.15% nasal spray (Astepro®) package insert. Apotex Corp., September 201.
- Levocetirizine tablets package insert. Camber Pharmaceuticals Inc., September 2019.
- Desloratadine tablets, RediTabs®, and oral solution (Clarinex®) package insert. Merck & Co., Inc., May 2020.
- Olopatadine (Patanase®) package insert. Alcon Laboratories Inc. March 2021.
- Claritin®. Available at: http://www.claritin.com. Accessed June 22, 2022.
- Zyrtec®. Available at: http://www.zyrtec.com. Accessed June 22, 2022.
- Allegra®. Available at: http://www.allegra.com. Accessed June 22, 2022.
- Azelastine HCl and fluticasone propionate (Dymista®) nasal spray package insert. Meda Pharmaceuticals Inc. Updated April 2021.
- Cetirizine HCl and pseudoephedrine HCl (Zyrtec-D®) package insert. J and J Consumer Inc. Updated November 2021.
- Fexofenadine HCl and pseudoephedrine HCl (Allegra-D 12 Hour Allergy and Congestion®) package insert. Chattem Sanofi. Updated June 2016.
- Fexofenadine HCl and pseudoephedrine HCl (Allegra-D 24 Hour Allergy and Congestion®) package insert. Chattem Sanofi. Updated June 2016.
- Desloratadine and pseudoephedrine sulfate (Clarinex-D 12 Hour®) package insert. Organon. Updated March 2019.
- Loratadine and pseudoephedrine sulfate (Claritin-D 12 hour®) package insert. Bayer Hlthcare. Updated March 2019.
- Loratadine and pseudoephedrine sulfate (Claritin-D 24 hour®) package insert. Bayer Hlthcare. Updated July 2018.
- Loratadine and pseudoephedrine sulfate (Alavert Allergy Sinus -D®) package insert. Bayer Hlthcare. Updated July 2018.
- Sur DK, Scandale S. Treatment of allergic rhinitis. Am Fam Physician. 2010; 81(12):1440-6.
- Kaliner MA. A novel and effective approach to treating rhinitis with nasal antihistamines. Ann Allergy, Asthma, & Immunol. 2007;99:383-90.
- Barr JG, Al-Reefy B, Fox AT, Hopkins C. Allergic rhinitis in children. BMJ. 2014;349:g4153.
- Wallace DV, Dykewicz MS, Bernstein DI, et al. for the Joint Task Force on Practice Parameters for Allergy and Immunology. The diagnosis and management of rhinitis: An updated practice parameter. J Allergy Clin Immunol. 2008;122(2)Suppl:S1-S84.
- Lexicomp Inc., Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2022; Accessed June 24, 2022.
- Amiodarone (Cordarone®) package insert. Cameron Pharmaceuticals LLC, April 2020.
Non-steroidal anti-inflammatory drugs
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Revised July 22, 2022; June 2020; June 2018; August 2016; June 2016; October 2014; February 2013; December 2012; March 2011; January 2011; October 2007; January 2006; August 2003; September 2002; August 2001; September 2000; August 2000; November 1999; October 1999; September 1998; September 1997; October 1996; October 1995.
- Initially developed
- January 1994
1. Dosage
Nonselective oral and rectal NSAIDs are FDA-approved for use in rheumatoid arthritis/juvenile rheumatoid arthritis (JRA), osteoarthritis, ankylosing spondylitis, pain management, dysmenorrhea, fever, migraines and cluster headaches. JRA is now also known as juvenile idiopathic arthritis (JIA) or juvenile arthritis (JA). Diclofenac, ibuprofen, and naproxen are also available as combination therapy with gastric acid suppressants to minimize the risk of NSAID-associated gastric ulcer development1-39.
1.1. Adults
Adult maximum daily NSAID dosages as monotherapy and combination therapy are summarized in Tables 1 and 2 and should not exceed these recommended maximum values.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Daily Dosage |
---|---|---|---|
aspirin extended-release (ER) (Durlaza®) | 162.5 mg ER capsule | Reduce risk of death and myocardial infarction (MI) in patients with coronary artery disease (CAD) such as patients with a history of MI, unstable angina pectoris, or chronic stable angina | 162.5 mg once daily |
Reduce risk of death and recurrent stroke in patients with previous ischemic stroke or transient ischemic attack (TIA) | 162.5 mg once daily | ||
aspirin (generics) | 81 mg chewable/EC tablets; 325 mg regular/EC tablets | arterial thromboembolism prophylaxis | 325 mg once daily |
81 mg chewable/enteric-coated (EC) tablets; 325 mg, 500 mg regular/EC tablets; 300 mg, 600 mg rectal suppositories | fever, pain (mild to moderate including dysmenorrhea) | 4000 mg/day in divided doses | |
81 mg chewable/EC tablets; 325 mg regular/EC tablets | myocardial infarction | 325 mg x1 dose, chewed | |
81 mg chewable/EC tablets | myocardial infarction prevention | 162 mg once daily | |
325 mg, 500 mg, regular/EC tablets | osteoarthritis | 3000 mg/day in divided doses | |
325 mg, 500 mg, regular/EC tablets | osteoarthritis | 3000 mg/day in divided doses | |
325 mg, 500 mg, regular/EC tablets | rheumatoid arthritis | titrate to a plasma salicylate level between 150- 300 mcg/ mL | |
81 mg chewable/EC tablets; 325 mg regular/EC tablets | stroke prevention in patients with TIA or other stroke risk factors | 325 mg once daily | |
choline magnesium trisalicylate | 500 mg, 750 mg, 1000 mg tablets; 500 mg/5 mL solution | fever, mild/ moderate pain | 3000 mg/day in divided doses |
osteoarthritis, rheumatoid arthritis, or acute painful shoulder | 3000 mg/ day in divided doses | ||
diclofenac potassium (Cambia®) | 50 mg oral powder for solution | acute migraine attack with or without aura | 50 mg (1 packet) as single dose |
diclofenac potassium immediate-release (IR) (Lofena®, Cataflam®, generics) | 25 mg (Lofena®, generics), 50 mg (Cataflam®, generics) IR tablets | osteoarthritis | 150 mg/day in divided doses |
pain (mild to moderate) | 150 mg/day in divided doses | ||
primary dysmenorrhea | 150 mg/day in divided doses | ||
rheumatoid arthritis | 200 mg/day in divided doses | ||
diclofenac sodium delayed- release (DR) (generics) | 25 mg, 50 mg, 75 mg DR tablets | ankylosing spondylitis | 125 mg/day in divided doses |
osteoarthritis | 150 mg/day in divided doses | ||
rheumatoid arthritis | 200 mg/day in divided doses | ||
diclofenac sodium extended-release (ER) (generics) | 100 mg ER tablets | osteoarthritis | 100 mg once daily |
rheumatoid arthritis | 200 mg/day in divided doses | ||
diclofenac potassium (Zipsor®, generics) | 25 mg capsule | pain (mild to moderate) | 100 mg/day in divided doses |
diclofenac (Zorvolex®, generics) | 18 mg, 35 mg (Zorvolex®, generics) capsules | osteoarthritis | 105 mg/day in divided doses |
pain (mild to moderate) | 105 mg/day in divided doses | ||
diflunisal | 500 mg tablets | osteoarthritis | 1500 mg/day in divided doses |
pain (mild to moderate) | 1500 mg/day in divided doses | ||
rheumatoid arthritis | 1500 mg/day in divided doses | ||
etodolac IR (generics) | 200 mg, 300 mg IR capsule; 400 mg, 500 mg IR tablet | acute pain | 1200 mg/day in divided doses |
osteoarthritis | 1200 mg/day in divided doses | ||
rheumatoid arthritis | 1200 mg/day in divided doses | ||
etodolac ER (generics) | 400 mg, 500 mg, 600 mg ER tablets | osteoarthritis | 1200 mg once daily |
rheumatoid arthritis | 1200 mg once daily | ||
fenoprofen capsules (Nalfon®, generics); tablets (Nalfon®, generics) | 200 mg, 400 mg capsules; 600 mg tablets | osteoarthritis | 3200 mg/day in divided doses |
pain (mild to moderate) | 3200 mg/ day in divided doses | ||
rheumatoid arthritis | 3200 mg/day in divided doses | ||
flurbiprofen (generics) | 50 mg, 100 mg tablets | osteoarthritis | 300 mg/day in divided doses |
rheumatoid arthritis | 300 mg/day in divided doses | ||
ibuprofen (Advil®, Motrin®, generics) | 100 mg chewable tablets; 200 mg, 400 mg, 600 mg, 800 mg tablets; 200 mg capsule; 100 mg/5 mL suspension | dysmenorrhea | 3200 mg/day in divided doses |
fever | 3200 mg/day in divided doses | ||
headache | 3200 mg/day in divided doses | ||
migraine | 3200 mg/day in divided doses | ||
osteoarthritis | 3200 mg/day in divided doses | ||
pain (mild to moderate) | 3200 mg/day in divided doses | ||
rheumatoid arthritis | 3200 mg/day in divided doses | ||
indomethacin IR (generics) | 25 mg, 50 mg capsules; 25 mg/5 mL suspension | acute bursitis or tendinitis | 200 mg/day in divided doses |
acute gouty arthritis | 200 mg/day in divided doses | ||
ankylosing spondylitis | 200 mg/day in divided doses | ||
osteoarthritis | 200 mg/day in divided doses | ||
rheumatoid arthritis | 200 mg/day in divided doses | ||
indomethacin ER (generics) | 75 mg ER capsules | acute bursitis or tendinitis | 150 mg/day in divided doses |
ankylosing spondylitis | 150 mg/day in divided doses | ||
osteoarthritis | 150 mg/day in divided doses | ||
rheumatoid arthritis | 150 mg/day in divided doses | ||
indomethacin (Tivorbex®, generics) | 20 mg capsules | acute pain (mild to moderate) | 120 mg/day in divided doses |
indomethacin rectal (Indocin®) | 50 mg rectal suppository | acute bursitis or tendinitis | 150 mg/day in divided doses; no more than 100 mg per dose |
acute gouty arthritis | 150 mg/day in divided doses; no more than 100 mg per dose | ||
ankylosing spondylitis | 200 mg/day in divided doses; no more than 100 mg per dose | ||
osteoarthritis | 200 mg/day in divided doses; no more than 100 mg per dose | ||
rheumatoid arthritis | 200 mg/day in divided doses; no more than 100 mg per dose | ||
ketoprofen IR (generics) | 25 mg, 50 mg, 75 mg IR capsules | osteoarthritis | 300 mg/day in divided doses |
pain (mild/moderate, including acute dysmenorrhea) | 300 mg/day in divided doses | ||
rheumatoid arthritis | 300 mg/day in divided doses | ||
ketoprofen ER (generics) | 200 mg ER capsule | osteoarthritis | 200 mg once daily |
rheumatoid arthritis | 200 mg once daily | ||
ketorolac (generics) | 10mg tablets | acute pain (moderately severe) following IV or IM treatment | 40 mg/day in divided doses |
magnesium salicylate (Doans®, generics) | 580 mg extended-release caplets | pain (mild/moderate) | 4640 mg/day (8 caplets) in divided doses |
meclofenamate (generics) | 50 mg, 100 mg capsules | acute bursitis or tendinitis | 400 mg/day in divided doses |
acute gouty arthritis | 400 mg/day in divided doses | ||
ankylosing spondylitis | 400 mg/day in divided doses | ||
dysmenorrhea and idiopathic heavy menstrual blood loss | 300 mg/day in divided doses | ||
osteoarthritis | 400 mg/day in divided doses | ||
pain (mild/ moderate) | 400 mg/day in divided doses | ||
rheumatoid arthritis | 400 mg/day in divided doses | ||
mefenamic acid (generics) | 250 mg capsules | pain (mild/ moderate including dysmenorrhea) | 1250 mg in divided doses on day 1; 1000 mg/day in divided doses on days 2-7 |
meloxicam (Mobic®, generics) | 7.5 mg, 15 mg tablets, 7.5 mg/ 5 mL suspension | osteoarthritis | 15 mg/day once daily |
rheumatoid arthritis | 15 mg/day once daily | ||
meloxicam (Vivlodex®, generics) | 5 mg, 10 mg capsules | osteoarthritis | 10 mg/day once daily |
nabumetone (generics) | 500 mg, 750 mg tablets | osteoarthritis | 2000 mg/day in single or divided doses |
rheumatoid arthritis | 2000 mg/day in single or divided doses | ||
naproxen IR (Aleve®, Naprosyn®, generics) | 220 mg IR capsule; 220 mg, 250 mg, 275 mg, 375 mg, 500 mg IR tablets; 125 mg/5 mL IR suspension | acute gout | 1500 mg/day in divided doses |
ankylosing spondylitis | 1500 mg/day in divided doses | ||
bursitis/tendinitis | 1500 mg/day in divided doses | ||
osteoarthritis | 1500 mg/day in divided doses | ||
pain (mild/moderate including dysmenorrhea) | 1500 mg/day in divided doses | ||
rheumatoid arthritis | 1500 mg/day in divided doses | ||
naproxen sodium (Anaprox DS®, generics) | 220 mg, 275 mg, 550 mg IR tablets | acute gout | 1650 mg/day in divided doses |
ankylosing spondylitis | 1650 mg/day in divided doses | ||
bursitis/tendinitis | 1650 mg/day in divided doses | ||
osteoarthritis | 1650 mg/day in divided doses | ||
pain (mild/moderate including dysmenorrhea) | 1650 mg/day in divided doses | ||
rheumatoid arthritis | 1650 mg/day in divided doses | ||
naproxen DR (EC-Naprosyn®, generics) | 375 mg, 500 mg DR tablets | ankylosing spondylitis | 1500 mg/day in divided doses |
osteoarthritis | 1500 mg/day in divided doses | ||
rheumatoid arthritis | 1500 mg/day in divided doses | ||
naproxen ER (Naprelan®, generics | 375 mg, 500 mg, 750 mg ER tablets | acute gout | 1500 mg/day in divided doses |
ankylosing spondylitis | 1500 mg/day in divided doses | ||
bursitis/tendinitis | 1500 mg/day in divided doses | ||
osteoarthritis | 1500 mg/day in divided doses | ||
pain (mild/moderate including dysmenorrhea) | 1500 mg/day in divided doses | ||
rheumatoid arthritis | 1500 mg/day in divided doses | ||
oxaprozin (Daypro®, generics) | 600 mg tablets | osteoarthritis | 1800 mg/day (not to exceed 26 mg/kg/day) in divided doses |
rheumatoid arthritis | 1800 mg/day (not to exceed 26 mg/kg/day) in divided doses | ||
piroxicam (Feldene®, generics) | 10 mg, 20 mg capsules | osteoarthritis | 20 mg once daily |
rheumatoid arthritis | 20 mg once daily | ||
salsalate (Disalcid®, generics) | 500 mg, 750 mg tablets | osteoarthritis | 3000 mg/day in divided doses |
rheumatoid arthritis | 3000 mg/day in divided doses | ||
sulindac (generics) | 150 mg, 200 mg tablets | acute gouty arthritis | 400 mg/day in divided doses |
ankylosing spondylitis | 400 mg/day in divided doses | ||
bursitis/tendinitis of shoulder | 400 mg/day in divided doses | ||
osteoarthritis | 400 mg/day in divided doses | ||
rheumatoid arthritis | 400 mg/day in divided doses |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Daily Dosage |
---|---|---|---|
acetaminophen/ aspirin/caffeine (Excedrin® Migraine, generics) | 250 mg/250 mg/65 mg tablets | migraine headache | 2 tablets/24 hours |
pain, including headache | 8 tablets/24 hours in divided doses | ||
acetaminophen/aspirin/caffeine (Goody’s®) | 260 mg/520 mg/32.5 mg powders | pain, including headache | 4 powders/24 hours in divided doses |
aspirin/butalbital/caffeine (Fiorinal®, generics) | 325 mg/50 mg/40 mg capsules, tablets | tension or muscle contraction headache | 6 capsules/24 hours in divided doses (1 or 2 every 4 hours) |
diclofenac/misoprostol (Arthrotec®, generics) | 50 mg/200 mcg, 75 mg/200 mcg delayed-release tablet | osteoarthritis in patients at high risk of developing NSAID-induced gastric and duodenal ulcers | 150 mg/600 mcg/day in divided doses |
rheumatoid arthritis in patients at high risk of developing NSAID-induced gastric and duodenal ulcers | 200 mg/800 mcg/day in divided doses | ||
ibuprofen/famotidine (Duexis®, generic) | 800 mg/26.6 mg tablet | pain relief in osteoarthritis and to decrease the risk of developing upper gastrointestinal ulcers | 2400 mg/79.8 mg/day in divided doses |
pain relief in rheumatoid arthritis and to decrease the risk of developing upper gastrointestinal ulcers | 2400 mg/79.8 mg/day in divided doses | ||
naproxen/esomeprazole (Vimovo®, generic) | 375 mg/20 mg, 500 mg/20 mg delayed-release tablet | ankylosing spondylitis in patients at risk of developing NSAID-associated ulcers | 1000 mg/40 mg/day in divided doses |
osteoarthritis in patients at risk of developing NSAID-associated ulcers | 1000 mg/40 mg/day in divided doses | ||
rheumatoid arthritis in patients at risk of developing NSAID-associated ulcers | 1000 mg/40 mg/day in divided doses |
1.2. Pediatrics
NSAID safety and efficacy in children have not been established for all available agents. Ibuprofen is FDA-approved for short-term management of fever and mild to moderate pain and long-term management of JRA/JIA/JA in pediatric patients; meloxicam and naproxen are FDA-approved for use in children as young as 2 years of age 1,2,24,25,29,37. Indomethacin is not FDA-approved in those less than 15 years of age, but JRA/JIA/JA patients between 2 and 14 years of age who have experienced toxicity/lack of benefit from other medications, may receive indomethacin up to a maximum dose of 3 mg/kg/day (no more than 200 mg/day orally)1,2,17,38. Aspirin, while FDA-approved for use in fever and pain for adolescents, should not be given for fever and muscle aches seen in viral illness due to the potential for Reye’s syndrome1,2,38. Aspirin in combination with acetaminophen and caffeine is FDA-approved for use in adolescent patients for mild to moderate pain, while naproxen/esomeprazole (Vimovo®) is approved for use in adolescents weighing at least 38 kg diagnosed with juvenile idiopathic arthritis at increased risk for NSAID associated gastric ulcers1,2,36 . NSAID dosages for pediatric indications are summarized in Tables 3 and 4. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Daily Dosage |
---|---|---|---|
aspirin* | 81 mg chewable/EC tablets; 325 mg, 500 mg regular/EC tablets; 300 mg, 600 mg rectal suppositories | fever/pain |
|
choline magnesium trisalicylate | 500 mg, 750 mg, 1000 mg tablets; 500 mg/5 mL solution | juvenile rheumatoid arthritis (JRA)/ juvenile idiopathic arthritis (JIA) |
|
diflunisal (generics) | 500 mg tablets | osteoarthritis |
|
pain (mild/moderate) |
|
||
rheumatoid arthritis |
|
||
etodolac extended-release (ER) (generics) | 400 mg, 500 mg, 600 mg ER tablets | JIA/JRA |
|
diflunisal (generics) | 500 mg tablets | osteoarthritis |
|
pain (mild/moderate) |
|
||
rheumatoid arthritis |
|
||
etodolac extended-release (ER) (generics) | 400 mg, 500 mg, 600 mg ER tablets | JIA/JRA |
|
ibuprofen (Motrin®, generics) | 50 mg/1.25 ml oral drops | fever, pain (mild to moderate) |
|
ibuprofen (Advil®, Motrin®, generics) | 100 mg/5 ml suspension | fever, pain (mild to moderate) |
|
ibuprofen (Advil®, generics) | 100 mg chewable tablets | fever, pain (mild to moderate) |
|
ibuprofen (Advil®, generics) | 200 mg caplets, capsules, or tablets | fever, pain (mild to moderate) |
|
ibuprofen (Advil®, Motrin®, generics) | chewable tablets, suspension, tablets | JIA/JRA |
|
indomethacin IR+ (generics) | 25 mg, 50 mg IR capsules; 25 mg/5 mL suspension | arthritic disorders |
|
50 mg rectal suppository |
|
||
indomethacin ER+ (generics) | 75 mg ER capsules |
|
|
magnesium salicylate (Doans®, generics) | 580 mg extended-release caplets | pain (mild to moderate) |
|
meclofenamate (generics) | 50 mg, 100 mg capsules | dysmenorrhea |
|
JIA/JRA |
|
||
pain (mild/moderate) |
|
||
mefenamic acid (generics) | 250 mg capsules | pain (mild/moderate, including dysmenorrhea) |
|
meloxicam (Mobic®, generics) | 7.5 mg tablets; 7.5 mg orally disintegrating tablets (ODT) | JIA/JRA |
|
7.5 mg/5 mL suspension |
|
||
naproxen (Aleve®, Naprosyn®, generics) | 220 mg IR capsule; 220 mg, 250 mg, 275 mg, 375 mg, 500 mg IR tablets; 125 mg/5 mL IR suspension | JIA/JRA |
|
pain (mild to moderate including dysmenorrhea) |
|
||
oxaprozin (Daypro®, generics) | 600 mg tablets | JIA/JRA |
|
Legend:
- *Do not use in children less than 12 years of age with flu-like symptoms or chickenpox due to risk of Reye syndrome
- +indomethacin not recommended in pediatric patients 2-14 years of age unless adverse effects/lack of efficacy with other NSAIDs justifies risk; maximum dose is 4 mg/kg/day or 200 mg/day, whichever is less
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Daily Dosage |
---|---|---|---|
acetaminophen/aspirin/caffeine (Excedrin®, generics) | 250 mg/250 mg/65 mg tablets | pain, including headache | 12-17 years of age: 8 tablets/24 hours in divided doses |
acetaminophen/aspirin/caffeine (Goody’s®) | 260 mg/ 520 mg/ 32.5 mg powders | 12-17 years of age: 4 powders/24 hours in divided doses | |
naproxen/esomeprazole (Vimovo®, generic) | 375 mg/20 mg, 500 mg/20 mg delayed-release tablet | juvenile rheumatoid arthritis/ juvenile idiopathic arthritis in patients at risk of developing NSAID-associated ulcers |
|
2. Duration of Therapy
2.1. Therapy Limits
The duration of therapy derived for NSAIDs may be long-term and indefinite when prescribed for chronic indications; however, the lowest effective dosages for the shortest possible time should be utilized. NSAIDs should be prescribed cautiously, if at all, to patients at high risk for gastrointestinal complications and patients with known cardiovascular disease. High-risk patients include those with a history of peptic ulcer disease or gastrointestinal bleeding, those with concurrent prescriptions for anticoagulants or corticosteroids, those prescribed high NSAID doses, those with a history of alcohol use and/or smoking, and the elderly. High-risk patients unable to discontinue or reduce NSAID use may benefit from adjunctive therapy with gastroprotective agents such as misoprostol, a histamine-2 receptor antagonist, or proton pump inhibitors.
Treatment duration is limited for mefenamic acid to minimize the occurrence of adverse events. Mefenamic acid should be prescribed for no longer than seven days for pain management and no longer than three days for dysmenorrhea to reduce the incidence of diarrhea associated with the use of this drug23.
Treatment duration of ketorolac should not exceed 5 total days due to increased risk of adverse events such as risk of gastric ulceration, bleeding, and perforation37.
Diclofenac powder for oral solution is indicated as a single 50 mg dose to treat acute migraine headache. Safety and efficacy of a second dose for an attack have not been established4.
2.2. NSAID Use in Elderly Patients
Elderly patients frequently utilize prescription and nonprescription NSAIDs to manage acute and chronic pain. Several issues surface with NSAID use in elderly patients, including potential adverse effects and drug interactions. NSAID-induced gastrointestinal and renal toxicity as well as adverse central nervous system effects are more prevalent in elderly patients due to changes in metabolism, underlying disease states, and concurrent drug therapy. The potential for increased cardiovascular risk with NSAID use is also a factor when evaluating NSAID therapy in elderly patients. Elderly patients prescribed NSAIDs, especially those at higher risk, should be evaluated for appropriateness of therapy as well as potential for drug-drug interactions. Appropriate therapy duration as well as appropriate dosages should also be evaluated. Preventive measures such as gastric antisecretory agents should be considered in some individuals to reduce GI complications40. Medication profiles of elderly patients greater than 60 years of age prescribed NSAIDs with increased risk factors for adverse events or drug-drug interactions will be reviewed.
2.3. NSAID Use and Cardiovascular Risk
Some clinical trials have shown that patients prescribed selective and nonselective NSAIDs may be at increased risk for serious cardiovascular (CV) thrombotic events, myocardial infarction, and stroke, all of which can be fatal. Patients at greater risk are those with known CV disease or risk factors for CV disease. Due to the lack of long-term clinical trial data, CV risks associated with NSAID use remains controversial, especially in high-risk patients. Risk also varies between nonselective NSAIDs and cyclooxygenase-2 (COX-2) inhibitors, as well as between individual NSAIDs. The Center for Drug Evaluation and Research has determined that the increased risk of CV events associated with NSAID use should be considered a class effect for both selective and nonselective NSAIDs until more results are available. Patients should be prescribed the lowest effective NSAID dose for the shortest possible treatment duration to minimize the potential for cardiovascular adverse events41-46.
NSAIDs may induce new onset hypertension or worsen pre-existing hypertension in some patients, which may contribute to the development of cardiovascular adverse events. Blood pressure should be routinely monitored in patients prescribed NSAIDs.
NSAIDs may cause fluid retention or edema in some patients and should be used cautiously in patients with a history of fluid retention or heart failure.
2.4. NSAID Use and Gastrointestinal Risk
All NSAIDs may be associated with an increased risk of serious gastrointestinal (GI) adverse events, including potentially fatal GI bleeding, ulceration, or gastric/intestinal perforation. The risk of NSAID-associated severe GI adverse events increases in patients with a history of peptic ulcer disease, GI bleeding, smoking, alcohol use, concurrent use of anticoagulants or oral corticosteroids, advanced age, poor health and prolonged NSAID use. However, COX-2 inhibitors like celecoxib may be associated with fewer GI adverse events due to selective COX-2 inhibition. Some trials have shown reduced ulcer complications and lower GI bleeding rates with celecoxib compared to nonselective NSAIDs. Further long-term studies are necessary to substantiate the perceived lower GI risk associated with COX-2 inhibitors47,48<./p>
3. Duplicative Therapy
The combination of two or more NSAIDs is not recommended except the use of less than 325 mg daily of aspirin plus another NSAID.
Concurrent administration of an NSAID and ketorolac, another NSAID utilized primarily for pain management with limited treatment duration, is contraindicated due to the potential for increased gastrointestinal adverse events.
The combined use of specific COX-2 inhibitors like celecoxib and nonspecific COX-1/COX-2 inhibitors does not provide additional therapeutic benefit and may result in additive adverse effects, including gastrointestinal toxicity. Concurrent therapy with specific COX-2 inhibitors and nonspecific COX-1/COX-2 inhibitors is not recommended and will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically significant for NSAIDs are summarized in Table 5. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
NSAIDs | antihypertensive agents (e.g., ACE inhibitors, angiotensin receptor blockers, beta blockers, diuretics) | potential for decreased antihypertensive effects, increased renal impairment risk (especially in patents dependent on renal prostaglandins for perfusion), with combined therapy; increased hyperkalemia risk with potassium-sparing diuretics; NSAIDs may block production of vasodilator and natriuretic prostaglandins | monitor blood pressure, renal function; observe for hyperkalemia with potassium-sparing diuretics; modify therapy as necessary; use combination cautiously in elderly; sulindac, nonacetylated salicylates may be alternative NSAIDS – have less inhibitory effect on prostaglandin synthesis | moderate (DrugReax) 3-moderate (CP) |
NSAIDs | antiplatelet drugs (e.g., clopidogrel, prasugrel) | potential for increased bleeding risk due to additive inhibitory effects on platelet aggregation | administer cautiously together; monitor for increased bleeding, especially gastrointestinal (GI) bleeding | clopidogrel –major; prasugrel - moderate (DrugReax) 3-moderate (CP) |
NSAIDs | aspirin (ASA) | combined therapy may result in reduced ASA antiplatelet/ cardioprotective effects due to competitive inhibition of COX-1 binding site | ASA should be administered at least 30 minutes before or 8 hours after NSAID; NSAID should be given at least 1 hour after enteric-coated ASA | moderate (DrugReax) |
NSAIDs | bisphosphonates | combined therapy may result in additive GI, renal toxicity; NSAIDs also decrease bone mineral density, may attenuate bone mineral stabilizing effects by bisphosphonates | administer combination cautiously; monitor for increased GI/renal adverse effects, reduced bone mineral density | 2-major (CP) |
NSAIDs | corticosteroids | potential for increased GI adverse effects with combined therapy | monitor for adverse effects; avoid prolonged concurrent administration | 3-moderate (CP) |
NSAIDs | cyclosporine | increased risk for additive renal dysfunction with concurrent administration; potential for reduced cyclosporine elimination/ increased pharmacologic and adverse effects due to NSAID effects on renal prostaglandins; NSAIDs may mask signs of infection (e.g., fever, swelling) | use cautiously together; monitor clinical status, renal function, serum potassium concentrations | 3-moderate (CP) |
NSAIDs | fluoroquinolones | increased risk for CNS stimulation and seizures | administer cautiously together; consider alternative therapy in patients with predisposition to seizures | moderate (DrugReax) 3-moderate (CP) |
NSAIDs | lithium | NSAIDs may decrease lithium clearance most likely by blocking renal tubular prostaglandins; may result in increased lithium levels and potential for adverse effects | avoid combination, if possible; if concurrent therapy necessary, monitor lithium levels and signs/symptoms of lithium toxicity; sulindac, aspirin do not affect lithium clearance -may be alternative NSAIDS | moderate (DrugReax) 3-moderate (CP) |
NSAIDs | low molecular weight heparins | potential for additive bleeding adverse effects; NSAIDs inhibit platelet aggregation and have increased GI bleeding risk, prolonged bleeding time | avoid concurrent therapy, if possible; if drug combination necessary, use cautiously, monitor for signs/symptoms of bleeding | major (DrugReax) 2-major (CP) |
NSAIDs | methotrexate (MTX) | potential for increased MTX serum levels, risk of enhanced pharmacologic/toxic effects as NSAIDs can reduce MTX clearance | avoid concurrent NSAIDs within 10 days of high-dose MTX; otherwise, use cautiously together; monitor for increased myelopsuppressive, GI adverse effects; may consider using longer leucovorin rescue | major (DrugReax) 1-severe (CP) |
NSAIDs | phenytoin | NSAIDs may inhibit phenytoin metabolism, with increased risk for enhanced phenytoin pharmacologic/toxic effects (e.g., ataxia, nystagmus, hyperreflexia) | monitor for signs/symptoms of phenytoin toxicity, especially in patients with renal impairment; adjust doses as necessary | moderate (DrugReax) |
NSAIDs | select azole antifungals (e.g., fluconazole, voriconazole) | for NSAIDs metabolized by CYP2C9, increased risk of elevated NSAID plasma levels and potential for enhanced pharmacologic/adverse effects; select antifungals inhibit CYP2C9 | administer cautiously together; monitor for increased NSAID pharmacologic/adverse effects (e.g., bleeding, renal dysfunction); consider reduced NSAID doses, if necessary, or alternate NSAID/antifungal that does not affect metabolism | moderate (DrugReax) 3-moderate (CP) |
NSAIDs | SSRIs/SNRIs (e.g., milnacipran) | increased bleeding risk with combined therapy, especially GI bleeding; SSRIs/SNRIs deplete platelet serotonin, which may impair platelet aggregation | monitor for signs/symptoms of bleeding; may consider lower NSAID doses, shorter treatment durations, adding proton pump inhibitor, or substituting tricyclic antidepressant for SSRI/SNRI | SSRIs –major; SNRIs-moderate (DrugReax) 3-moderate (CP) |
NSAIDs | sulfonylureas | increased risk for additive hypoglycemia | monitor serum glucose concentrations; adjust doses as necessary | moderate (DrugReax) 4-minor (CP) |
NSAIDs | tacrolimus | potential for additive nephrotoxicity with combined therapy due to NSAID inhibitory effects on renal prostaglandins | avoid combination, if possible; if concurrent therapy necessary, closely monitor renal function | major (DrugReax) 3-moderate (CP) |
NSAIDs | warfarin | combined therapy may result in increased INR and increased risk of GI adverse effects, especially in elderly; mechanism unknown | monitor anticoagulant activity, especially in first several days of combination therapy; adjust warfarin doses as necessary | major (DrugReax) 2-major (CP) |
Legend:
- # CP = Clinical Pharmacology
5. References
- IBM Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/ (cited: June 20, 2022).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc; 2022. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu. Accessed June 20, 2022.
- Aspirin extended-release capsules (Durlaza®) package insert. New Haven Pharmaceuticals, September 2015.
- Diclofenac potassium powder for solution (Cambia®) package insert. Assertio Therapeutics, Inc. October 2019.
- Diclofenac potassium tablet (Lofena®) package insert. Carwin Pharmaceutical Associates, LLC. November 2021.
- Diclofenac potassium tablet (Cataflam®) package insert. Blucrest Pharmaceuticals, LLC. July 2021.
- Diclofenac potassium tablets package insert. Mylan Pharmaceuticals, October 2020.
- Diclofenac potassium liquid filled capsule (Zipsor®) package insert. Assertio Therapeutics, Inc. April 2021.
- Diclofenac capsules (Zorvolex®) package insert. Iroko Pharmaceuticals, LLC, April 2019.
- Diflunisal oral tablet package insert. Cadila Healthcare Limited. December 2019.
- Etodolac tablets and capsules package insert. Taro Pharmaceuticals U.S.A., Inc. March 2021.
- Etodolac extended-release tablets package insert. Northstar RX LLC. May 2021.
- Fenoprofen calcium oral capsule (Nalfon®) package insert. Xspire Pharma. May 2021.
- Fenoprofen calcium oral tablet (Nalfon®) package insert. Xspire Pharma. May 2021.
- Flurbiprofen oral tablet package insert. Teva Pharmaceuticals USA, Inc. November 2021.
- Ibuprofen oral tablets product information. Aero Healthcare. April 2022.
- Indomethacin oral capsule package insert. Cadila Healthcare Limited. August 2021.
- Indomethacin capsules (Tivorbex®) package insert. Iroko Pharmaceuticals, LLC, January 2018.
- Indomethacin (Indocin®) package insert. Zyla Life Sciences US Inc. November 2021.
- Ketoprofen oral capsule package insert. Misemer Pharmaceuticals, Inc. January 2022.
- Ketoprofen extended release oral capsule package insert. Mylan Pharmaceuticals Inc. March 2021.
- Meclofenamate oral capsule package insert. Mylan Pharmaceuticals Inc. May 2021.
- Mefenamic acid capsules package insert. Belcher Pharmaceuticals, LLC. December 2021.
- Meloxicam oral tablet (Mobic ®) package insert. Boehringer Ingelheim Pharmaceuticals, Inc. October 2018.
- Meloxicam capsules (Vivlodex®) package insert. Egalet US Inc. April 2021.
- Nabumetone oral tablet (Relafen®) package insert. Blucrest Pharmaceuticals LLC. July 2021.
- Nabumetone oral tablet (Relafen DS®) package insert. Carwin Pharmaceutical Associates, LLC. May 2022.
- Naproxen delayed-release tablets (EC-Naprosyn®), naproxen tablets (Naprosyn®), naproxen sodium tablets (Anaprox®/Anaprox® DS) package insert. Atnahs Pharma US. March 2017.
- Naproxen sodium controlled-release tablets (Naprelan®) package insert. Almatica Pharma. April 2021.
- Oxaprozin caplets (Daypro®) package insert. Pfizer. January 2022.
- Piroxicam oral capsules (Feldene®) package insert. Pfizer. May 2021.
- Salsalate oral tablet package insert. Acella Pharmaceuticals, LLC. January 2020.
- Sulindac oral tablet package insert. Actavis Pharma, Inc. September 2021.
- Diclofenac sodium/misoprostol tablets (Arthrotec®) package insert. Pfizer. August 2021.
- Ibuprofen and famotidine oral tablet (Duexis®) package insert. Horizon Therapeutics USA, Inc. June 2021.
- Naproxen and esomeprazole magnesium oral tablet (Vimovo®) package insert. Horizon Therapeutics USA, Inc. March 2022.
- Ketorolac (Toradol®) package insert. Roche Pharmaceuticals. March 2013.
- Children’s ibuprofen suspension (100 mg/5 ml) product information. Amazon.com Services LLC. November 2021.
- AHFS Drug Information 2022. Bethesda, MD: American Society of Health-System Pharmacists. 2022. Available at: http://online.statref.com.ezproxy.lib.utexas.edu/document/F9-IjOEqk3ZluRgZSvZvmt!!. Accessed June 20, 2022.
- Wongrakpanich S, Wongrakpanich A, Melhado K, Rangaswami J. A comprehensive review of non-steroidal anti-inflammatory drug use in the elderly. Aging Dis. 2018;9(1):143-150.
- U.S. Food and Drug Administration. Center for Drug Evaluation and Research. COX-2 selective (includes Bextra, Celebrex, and Vioxx) and non-selective non-steroidal anti-inflammatory drugs (NSAIDs). (February 6, 2018) Available at: https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/cox-2-selective-includes-bextra-celebrex-and-vioxx-and-non-selective-non-steroidal-anti-inflammatory. Accessed June 20, 2022.
- United States Food and Drug Administration. FDA Drug Safety Communication: FDA strengthens warning that non-aspirin nonsteroidal anti-inflammatory drugs (NSAIDs) can cause heart attacks or strokes. (July 9, 2015) Available at: http://www.fda.gov/Drugs/DrugSafety/ucm451800.htm. Accessed June 20, 2022.
- Joshi GP, Gertler R, Fricker R. Cardiovascular thromboembolic adverse effects associated with cyclooxygenase-2 selective inhibitors and nonselective antiinflammatory drugs. Anesth Analg. 2007;105:1793–804.
- Waksman JC, Brody A, Phillips SD. Nonselective nonsteroidal antiinflammatory drugs and cardiovascular risk: are they safe? Ann Pharmacother. 2007;41:1163-73.
- Hermann M, Ruschitzka F. Cardiovascular risk of cyclooxygenase-2 inhibitors and traditional nonsteroidal anti-inflammatory drugs. Ann Med. 2007;39:18-27.
- Friedewald VE, Bennett JS, Christo JP, et al. AJC Editor's consensus: Selective and nonselective nonsteroidal anti-inflammatory drugs and cardiovascular risk. Am J Cardiol. 2010;106(6):873-84.
- Lazzaroni M, Battocchia A, Porro GB. COXIBs and non-selective NSAIDs in the gastroenterological setting: What should patients and physicians do? Dig Liver Dis. 2007;39:589-96.
- Silverstein FE, Faich G, Goldstein JL, et al. Gastrointestinal toxicity with celecoxib vs. nonsteroidal anti-inflammatory drugs for osteoarthritis and rheumatoid arthritis. The CLASS study: a randomized trial. JAMA. 2000;284;1247-55.
Platelet Aggregation Inhibitors
Platelet Aggregation Inhibitors - Index
Medications listed in the tables and non-FDA approved indications that may be included in these retrospective criteria are not indicative of Vendor Drug Program formulary coverage.
- Revision history
- Jan. 23. 2023
- Jan. 22, 2021
- March 2019
- Initially developed
- Dec. 2016
1. Dosage
1.1. Adults
Platelet aggregation inhibitors (PAIs) are FDA-approved to reduce thrombotic cardiovascular events in patients with a history of ischemic stroke, or to prevent stroke in patients with predisposing factors for atherosclerosis or symptomatic cerebrovascular disease.1-12 PAIs work by interfering with pathways that promote normal platelet function: inhibiting cyclooxygenase-1 (e.g., aspirin); inhibiting adenosine uptake into platelets, resulting in increased cyclic-3’,5’-adenosine monophosphate (cAMP) and adenosine levels (e.g., dipyridamole); inhibiting the adenosine diphosphate (ADP) P2Y12 receptor on the platelet surface and blocking activation of the glycoprotein GPIIb/IIIa complex (e.g., clopidogrel, prasugrel, ticagrelor); antagonizing protease-activated receptor 1 (PAR-1), which inhibits thrombin and thrombin receptor agonist peptide activity (e.g., vorapaxar); or inhibiting phosphodiesterase lll (e.g., cilostazol).2-4, 13
Aspirin is available in combination with omeprazole, a proton pump inhibitor, to reduce the risk of aspirin-associated gastric ulcers in those patients requiring aspirin for secondary prevention of cardiovascular and cerebrovascular events.2-4, 10 Aspirin is also available as combination therapy with dipyridamole, pairing two antiplatelet agents with different mechanisms of action for secondary stroke prevention.2-4, 11 Maximum recommended adult dosages for PAIs are summarized in Tables 1 and 2 (1-3, 5-12). Medication profiles identifying patients prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
cilostazol (generics) | 50 mg, 100 mg tablets | intermittent claudication | 100 mg twice daily |
clopidogrel (Plavix®, generics) | 75 mg, 300 mg tablets | ACS, including UA/NSTEMI and STEMI | Initial: 300 mg or 600 mg loading dose, followed by 75 mg once daily for up to 12 months in combination with aspirin, followed by aspirin indefinitely |
thromboembolism prophylaxis in patients with recent MI or stroke, or established peripheral vascular disease | 75 mg/day | ||
dipyridamole (generics) | 25 mg, 50 mg, 75 mg tablets | prevention of postoperative thrombotic complications in patients with prosthetic heart valves | 400 mg/day (divided doses, in combination with warfarin) or 400 mg/day (divided doses, in combination with aspirin) |
prasugrel (Effient®, generics) | 5 mg, 10 mg tablets | ACS in patients to be managed with PCI | following a 60 mg loading dose, 10 mg/day+ in combination with aspirin |
ticagrelor (Brilinta®) | 60 mg, 90 mg tablets | reduce risk of death, MI, and stroke in patients with ACS, history of MI, or acute ischemic stroke/ high risk transient ischemic attack | following a 180 mg loading dose, 90 mg twice daily^ in combination with aspirin |
reduce risk of first MI or stroke in patients with CAD at high risk of events | 60 mg twice daily in combination with aspirin | ||
vorapaxar (Zontivity®) | 2.08 mg tablet | MI, stroke, thrombosis prophylaxis in patients with a history of MI or PAD | 2.08 mg/day in combination with aspirin or clopidogrel |
Legend:
- ACS = acute coronary syndrome
- CAD = coronary artery disease
- MI = myocardial infarction
- NSTE-ACS = non-ST-elevation acute coronary syndrome
- NSTEMI = non-ST-elevation myocardial infarction
- PAD = peripheral arterial disease
- PCI = percutaneous coronary intervention
- STEMI = ST-elevation myocardial infarction
- TIA = transient ischemic attack
- UA = unstable angina
- + patients 75 years or older or weigh less than 60 kg may use prasugrel 5 mg/day as maintenance therapy in combination with aspirin to reduce bleeding risk
- ^ ticagrelor dosages are decreased to 60 mg twice daily after 12 months
Drug Name | Dosage Form/ Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
aspirin/ omeprazole (Yosprala®) | 81 mg/40 mg, 325 mg/40 mg delayed-release tablets | secondary prevention of cardiovascular and cerebrovascular events in patients predisposed to gastric ulcers | 325 mg/40 mg once daily |
dipyridamole/aspirin (generics) | 200 mg/25 mg extended-release capsule | secondary stroke prevention | 200 mg/25 mg twice daily |
1.2. Pediatrics
Dipyridamole is FDA-approved for use in pediatric patients 12 years of age and older as adjunctive therapy to prevent thromboembolism following cardiac valve replacement. The maximum recommended dose is 100 mg four times daily in combination with warfarin. Dosages exceeding these recommendations will be reviewed.
Aspirin as Durlaza®, cilostazol, prasugrel, ticagrelor, vorapaxar, aspirin/omeprazole, and dipyridamole/aspirin are not recommended for use in pediatric patients as safety and efficacy have not been established for these agents in this patient population. Although not FDA-approved, clopidogrel has effectively been used in pediatric patients to reduce thrombosis risk in infants and children with select types of heart disease, or as an alternative in patients with Kawasaki disease or ischemic stroke when aspirin is not tolerated.2, 3, 14-17
2. Duration of Therapy
There is no basis for limiting PAI therapy duration when prescribed to prevent thromboembolic events associated with cardiovascular or cerebrovascular disease. However, PAI therapy duration varies based on medication utilized and indication for use. PAI treatment durations are summarized in Tables 3 and 4.
Drug Name | Treatment Indication | Maximum Treatment Duration |
---|---|---|
cilostazol | intermittent claudication | indefinite |
clopidogrel | acute coronary syndrome (NSTE-ACS and STEMI) | up to 1 year, in combination with aspirin; aspirin then continued indefinitely + |
thromboembolism prophylaxis | indefinite | |
prasugrel | ACS in patients to be managed with PCI | at least 12 months, in combination with aspirin, after stent placement |
ticagrelor | ACS | 90 mg twice daily x 1 year in combination with aspirin; then, 60 mg twice daily in combination with aspirin indefinitely |
vorapaxar | MI, stroke, thrombosis prophylaxis in patients with a history of MI or PAD | indefinite, in combination with aspirin or clopidogrel |
Legend:
- ACS = acute coronary syndrome
- CAD = coronary artery disease
- MI = myocardial infarction
- NSTE-ACS = non-ST-elevation acute coronary syndrome
- NSTEMI = non-ST-elevation myocardial infarction
- PAD = peripheral arterial disease
- PCI = percutaneous coronary intervention
- STEMI = ST-elevation myocardial infarction
- TIA = transient ischemic attack
- + in patients with aspirin allergy, clopidogrel monotherapy may be continued indefinitely
Drug Name | Treatment Indication | Maximum Treatment Duration |
---|---|---|
aspirin/omeprazole | secondary prevention of cardiovascular and cerebrovascular events in patients predisposed to gastric ulcers | indefinite |
dipyridamole/aspirin | stroke prevention | indefinite |
3. Duplicative Therapy
Adjunctive therapy with aspirin and clopidogrel, dipyridamole, prasugrel, ticagrelor, or vorapaxar has documented efficacy for acute coronary syndrome or thrombotic event prevention; concurrent therapy with clopidogrel and ticagrelor or vorapaxar is also FDA-approved for thromboembolic event prophylaxis or acute coronary syndrome (see Tables 1-4).1-11,18-19
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens that may result in clinically significant drug-drug interactions. Major drug-drug interactions considered clinically significant for platelet aggregation inhibitors are summarized in Table 5. Only those drug-drug interactions classified as clinical significance level 1/contraindicated or those considered life threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
aspirin | methotrexate (MTX) | potential for increased MTX serum levels, risk of enhanced pharmacologic/ toxic effects as NSAIDs can reduce MTX clearance | avoid concurrent aspirin use within 10 days of high-dose MTX; otherwise, use cautiously together; monitor for increased myelosuppressive, GI adverse effects; may consider using longer leucovorin rescue | major (DrugReax) 1-severe (CP) |
cilostazol, dipyridamole | riociguat (Adempas®) | concurrent administration may result in increased hypotension risk | avoid concurrent use | contraindicated (DrugReax) dipyridamole: 1-severe; cilostazol: 3-moderate (CP) |
cilostazol, ticagrelor, vorapaxar | itraconazole, strong CYP3A4 inhibitors | co-administration may result in elevated serum concentrations of select platelet aggregation inhibitors (PAIs) and potential bleeding complications as cilostazol, ticagrelor, and vorapaxar metabolized by CYP3A4 | avoid use; ticagrelor therapy should not be initiated for at least 2 weeks after itraconazole discontinuation; if adjunctive administration necessary, use cautiously and monitor patient closely for enhanced pharmacologic/ adverse effects, especially bleeding | ticagrelor: contraindicated; cilostazol, vorapaxar: major (DrugReax) ticagrelor: 1-severe; cilostazol, vorapaxar: 2-major (CP) |
clopidogrel | dasabuvir/ombitasvir/paritaprevir/ritonavir (Viekira®) | adjunctive administration with clopidogrel (strong CYP2C8 inhibitor) contraindicated by manufacturer, as dasabuvir metabolized by CYP2C8, which increases risk for dasabuvir-induced QT interval prolongation; ritonavir, a CYP3A4 inhibitor, may limit clopidogrel conversion to active metabolite | avoid concurrent use | 1-severe (CP) |
clopidogrel | omeprazole | strong CYP2C19 inhibitor (e.g. omeprazole) may result in reduced plasma concentrations of clopidogrel active metabolite and diminish antiplatelet activity | avoid concurrent use; consider alternative proton pump inhibitor (e.g. pantoprazole) | major (DrugReax) 2-major (CP) |
PAIs | defibrotide | increased risk of hemorrhage when used adjunctively with antithrombotic/ fibrinolytic drugs like PAIs | avoid concurrent use | contraindicated (DrugReax) 1-severe (CP) |
PAIs, including aspirin | low molecular weight heparins | potential for additive bleeding adverse effects; PAIs inhibit platelet aggregation and have increased bleeding risk, prolonged bleeding time | avoid concurrent therapy, if possible; if drug combination necessary, use cautiously, monitor for signs/symptoms of bleeding | major, moderate (DrugReax) 2-major, 3-moderate (CP) |
PAIs, including aspirin | selective serotonin reuptake inhibitors (SSRIs)/, serotonin norepinephrine reuptake inhibitors (SNRIs) | increased bleeding risk with combined therapy; SSRIs/SNRIs deplete platelet serotonin, which may impair platelet aggregation | monitor for signs/symptoms of bleeding; may consider substituting tricyclic antidepressant for SSRI/SNRI | SSRIs –major; SNRIs-major (DrugReax) 3-moderate (CP) |
PAIs, including aspirin | anticoagulants | combined administration may increase bleeding risk, due to additive effects | if combined therapy necessary, monitor patients closely for bleeding signs/symptoms | major (DrugReax) 2-major, 3-moderate (CP) |
PAIs | nonsteroidal anti-inflammatory drugs (NSAIDs) | concurrent use may increase risk for bleeding especially with chronic NSAID use | monitor for signs of bleeding with concurrent use | major (DrugReax) 3-moderate (CP) |
ticagrelor, vorapaxar | strong CYP3A inducers (e.g., rifampin) | strong inducers substantially reduce ticagrelor, vorapaxar exposure and efficacy as both are CYP3A4 substrates | avoid use | major (DrugReax) 2–major (CP) |
ticagrelor | simvastatin, lovastatin | adjunctive use may increase lovastatin, simvastatin serum levels as ticagrelor is CYP3A4 inhibitor and lovastatin and simvastatin are metabolized by CYP3A4 | avoid lovastatin, simvastatin doses higher than 40 mg; observe for adverse effects if combined use necessary | moderate (DrugReax) 2–major (CP) |
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed October 10, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed October 10, 2022.
- Cilostazol tablets package insert. Teva Pharmaceuticals USA, Inc., July 2022.
- Clopidogrel tablets (Plavix®) package insert. Sanofi-Aventis US, September 2022.
- Dipyridamole tablets package insert. ANI Pharmaceuticals, Inc., November 2021.
- Prasugrel tablets (Effient®) package insert. Cossette Pharmaceuticals, Inc., February 2022.
- Ticagrelor tablets (Brilinta®) package insert. AstraZeneca Pharmaceuticals, May 2022.
- Vorapaxar tablets (Zontivity®) package insert. WraSer Pharmaceuticals, October 2022.
- Aspirin/omeprazole tablets (Yosprala®) package insert. Genus Lifesciences, Inc., March 2022.
- Aspirin/dipyridamole tablets (Aggrenox®) package insert. Boehringer Inelheim Pharmaceuticals, Inc., May 2021.
Pramlintide
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Oct. 21, 2022; Sept. 2020; Sept. 2018; Sept. 2016; May 2015; Oct. 2013; Dec. 2011; Jan. 2010; May 2006.
- Initially developed
- Feb. 2006
1. Dosage
Adults
Pramlintide (Symlin®), a synthetic analog of human amylin, is FDA-approved for use as adjunct therapy in patients with type 1 or type 2 diabetes using mealtime insulin who are not adequately controlled with optimal insulin therapy. Amylin is a neuroendocrine hormone secreted concurrently with insulin in response to food intake to decrease hepatic glucose output and slow gastric emptying, which results in reduced carbohydrate absorption and lower postprandial glucose levels. Similarly, pramlintide works by delaying gastric emptying, decreasing postprandial increases in glucagon levels, and causing satiety, which promotes decreased caloric intake and potential weight loss.1-3 Pramlintide is available as a 1.5 ml disposable, multidose 60-pen injector or a 2.7 ml disposable, multidose 120-pen injector containing pramlintide 1000 mcg/ml. The 60-pen injector provides doses of 15 mcg, 30 mcg, 45 mcg, or 60 mcg while the 120-pen injector provides pramlintide doses of 60 mcg or 120 mcg1,3. Recommended pramlintide dosages are summarized in Table 1.
Treatment Indication | Dosage Form/Strength | Initial Dose | Dosage Titration | Maximum Recommended Dosage |
---|---|---|---|---|
type 1 diabetes mellitus | SymlinPen® 60 solution pen-injector (1000 mcg/mL, 1.5 mL) | 15 mcg subcutaneously immediately prior to each major meal | 15 mcg increments | 60 mcg subcutaneously immediately prior to each major meal |
type 2 diabetes mellitus (insulin-using) | SymlinPen® 120 solution pen-injector (1000 mcg/mL, 2.7 mL) | 60 mcg subcutaneously immediately prior to each major meal | 60 mcg increments | 120 mcg subcutaneously immediately prior to each major meal |
In patients with type 1 diabetes, dosage titrations should be initiated when clinically significant nausea has been absent for at least 3 days. If nausea persists with the 45 mcg or 60 mcg dose, the dosage may be reduced to 30 mcg. If patients do not tolerate the 30 mcg dose, discontinuing therapy may be necessary. In insulin-using patients with type 2 diabetes, dosage titrations may be initiated when significant nausea is absent for at least 3 days. If the 120 mcg dose is not tolerated, the dosage may be decreased to 60 mcg. For patients with type 1 or type 2 diabetes receiving pre-prandial rapid or short-acting insulin therapy, including fixed-mixed insulin, dose should be decreased by 50% when adjunctive pramlintide therapy is initiated to minimize hypoglycemic episodes. Insulin doses may be titrated upward as needed when a maintenance pramlintide dose is established1,3. Patient profiles containing pramlintide prescription quantities of greater than 2 x 60-pen injectors or 1 x 120-pen injector per 30 days for patients with type 1 diabetes will be reviewed. Likewise, patient profiles containing pramlintide prescription quantities of greater than 2 x 120-pen injectors per 30 days for patients with type 2 diabetes will be reviewed.
Pramlintide should not be administered to patients who1,3:
- have been diagnosed with gastroparesis
- have recurrent episodes of hypoglycemia requiring intervention in the last 6 months and/or hypoglycemia unawareness
- have an HbA1c greater than 9%
- require therapy with medications that stimulate gastrointestinal motility
- are poorly compliant with insulin regimens and/or self-monitoring of blood glucose serum concentrations
Pediatrics
Safety and efficacy of pramlintide injections in pediatric patients have not been established. However, a few small, short-term studies have evaluated pramlintide use in adolescents with type 1 diabetes and demonstrated significant reductions in postprandial hyperglycemia. Further long-term studies are necessary to solidify results4-7.
2. Duration of Therapy
Pramlintide is indicated for the management of diabetes mellitus and may be continued indefinitely based on patient need to achieve desired glucose control.
3. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for pramlintide are summarized in Table 2. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level* |
---|---|---|---|---|
antidiabetic agents | fluoroquinolones | adjunctive administration may result in blood glucose disturbances and increased risk for hyper- or hypoglycemia due to an unknown mechanism | closely monitor blood glucose levels and adjust antidiabetic doses as needed; doses may also require adjustments with fluoroquinolone discontinuation | major (DrugReax) 3-moderate (CP) |
antidiabetic agents | somatostatin analogues (SAs) (e.g., octreotide, pasireotide) | concurrent use may impair glucose regulation as SAs inhibit insulin and glucagon secretion; substantially increased blood glucose levels may result | monitor closely for changes in blood glucose control before and throughout SA therapy; adjust antidiabetic doses as needed | major (DrugReax) 2-major (CP) |
pramlintide | alpha glucosidase inhibitors (e.g., acarbose, miglitol) | alpha glucosidase inhibitors slow nutritive absorption; adjunctive administration may potentiate pramlintide pharmacologic effects, increasing potential for additional blood glucose reductions and risk of hypoglycemia | concurrent administration not recommended by manufacturer | 3-moderate (CP) |
pramlintide | gastric stimulants (e.g., metoclopramide, tegaserod) | concurrent administration may attenuate pharmacologic effects of both agents | manufacturer states that pramlintide/gastric stimulant combination should be avoided | 2-major (CP) |
pramlintide | medications that slow gastrointestinal motility (e.g., tricyclic antidepressants, opiates, antimuscarinics, diphenoxylate) | adjunctive administration may enhance pramlintide pharmacologic effects, increasing potential for additional blood glucose reductions and risk of hypoglycemia | concurrent administration not recommended by manufacturer | 2-major (CP) |
pramlintide | insulin | adjunctive use may increase hypoglycemia risk; pramlintide pharmacokinetic parameters altered if mixed in same syringe with insulins | reduce mealtime insulin doses to minimize hypoglycemia; do not mix together; give as separate injections | 2-major (CP) |
pramlintide | oral medications with hypoglycemic effects (e.g., oral antidiabetic agents, angiotensin-converting enzyme inhibitors, angiotensin II receptor blockers, disopyramide, fibric acid derivatives, salicylates, sulfonamide antibiotics) | concomitant administration may result in enhanced hypoglycemic pharmacologic and adverse effects | monitor blood glucose levels closely and adjust dosages as necessary if drug combination required to minimize excessive hypoglycemia and associated adverse events | moderate (DrugReax) 3-moderate (CP) |
pramlintide | oral medications with rapid gastrointestinal (GI) absorption, or narrow therapeutic index | pramlintide delays gastric emptying; combined use may reduce serum levels of drugs with narrow therapeutic index, or those requiring rapid GI absorption | use cautiously together | 4-minor (CP) |
pramlintide | oral medications requiring threshold concentrations for effect (e.g., acetaminophen, oral contraceptives) | concurrent administration may reduce serum levels of drugs with threshold concentrations as pramlintide delays gastric emptying | use cautiously together; administer medications having threshold concentrations for effect at least 1 hour before or 2 hours after pramlintide | 4-minor (CP) |
4. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed August 17th, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed August 17th, 2022.
- Pramlintide (Symlin®) package insert. AstraZeneca, December 2019.
- Kishiyama CM, Burdick PL, Cobry EC, et al. A pilot trial of pramlintide home usage in adolescents with type 1 diabetes. Pediatrics. 2009;124(5):1344-7.
- Chase HP, Lutz K, Pencek R, Zhang B, Porter L. Pramlintide lowered glucose excursions and was well-tolerated in adolescents with type 1 diabetes: results from a randomized, single-blind, placebo-controlled, crossover study. J Pediatr. 2009;155(3):369-73.
- Hassan K, Heptulla RA. Reducing postprandial hyperglycemia with adjuvant premeal pramlintide and postmeal insulin in children with type 1 diabetes mellitus. Pediatr Diabetes. 2009;10(4):264-8.
- Weinzimer SA, Sherr JL, Cengiz E, et al. Effect of pramlintide on prandial glycemic excursions during closed-loop control in adolescents and young adults with type 1 diabetes. Diabetes Care. 2012;35(10):1994-9.
Promethazine Use In Children Less Than 2 Years of Age
Promethazine Use In Children Less Than 2 Years of Age - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Oct. 13, 2023
- Oct. 2021
- Sept. 2019
- Sept. 2017
- Aug. 2015
- Dec. 2013
- Feb. 2012
- May 2010
- Initially developed
- Oct. 2006
1. Dosage
1.1. Pediatrics
In 2004, promethazine received a “black box” warning with contraindications for use in children under two years of age and strengthened warnings for use in children two years of age and older. These revisions resulted from repeated reports to the Food and Drug Administration (FDA) of serious, life-threatening adverse events in children. Between 1969 and 2003, the FDA received 125 reports of adverse events in the pediatric population including respiratory depression, apnea, or cardiac arrest (n = 38); dystonic reactions (n = 29); unspecified central nervous system reactions (n = 24); seizures or seizure-like activity (n = 15); dermatologic reactions (n = 12); and neuroleptic malignant syndrome (n = 5). All routes of administration were responsible for the outcomes observed with these events, which included hospitalization, life-threatening events, disability, and death. 1-6
Due to the limitations placed on promethazine prescribing, all profiles for patients under two years of age containing prescriptions for promethazine will be reviewed.
2. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed August 23, 2023.
- Starke PR, Weaver J, Chowdhury BA. Boxed warning added to promethazine labeling for pediatric use. N Engl J Med. 2005;352:2653.
- U.S. Department of Health and Human Services. U.S. Food and Drug Administration. Promethazine (marketed as Phenergan) information. (April 2006). Available at: http://www.fda.gov/Drugs/DrugSafety/PostmarketDrugSafetyInformationforPatientsandProviders/ucm109364.htm. Accessed August 21, 2023.
- Promethazine hydrochloride solution package insert. Nostrum Laboratories, Inc., December 2020.
- Promethazine suppositories package insert. Camber Pharmaceuticals, Inc., November 2022.
Proton Pump Inhibitors
Proton Pump Inhibitors - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Jan. 20, 2023
- Jan. 22, 2021
- Dec. 2016
- March 2015
- June 2013
- Nov. 2011
- Sept. 2011
- Sept. 2009
- June 2009
- Dec. 2005
- Nov. 2003
- Oct. 2002
- Initially developed
- Dec. 2001
1. Dosage
Proton pump inhibitors (PPIs) are FDA-approved for managing duodenal and gastric ulcers, erosive esophagitis (EE), gastroesophageal reflux disease (GERD), hypersecretory conditions, and heartburn, preventing nonsteroidal anti-inflammatory drug (NSAID)-induced ulcers, and eradicating Helicobacter pylori (as a component of combination therapy).
Omeprazole/sodium bicarbonate combination therapy is FDA-approved for managing gastric and duodenal ulcer, EE, GERD, and upper gastrointestinal bleed risk reduction in critically ill patients.
Esomeprazole combined with naproxen is FDA-approved for use in osteoarthritis (OA), rheumatoid arthritis (RA), or ankylosing spondylitis (AS) in adult patients at greater risk for developing NSAID-induced gastric ulcers.
1.1. Adults
Maximum daily adult doses for PPIs when prescribed as acute and maintenance therapy, as well as components of combination treatments, are summarized in Tables 1-4. Dosages exceeding these recommended values will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
dexlansoprazole (Dexilant) | 30 mg, 60 mg delayed- release capsules | erosive esophagitis (EE) | 60 mg/day |
gastroesophageal reflux disease (GERD) - nonerosive | 30 mg/day | ||
esomeprazole magnesium (Nexium®, generics) | 20 mg, 40 mg delayed-release capsules; 2.5 mg, 5 mg, 10 mg, 20 mg, 40 mg delayed-release powder for suspension | EE | 40 mg/day |
GERD - nonerosive | 20 mg/day | ||
Helicobacter pylori eradication | 40 mg/day* | ||
heartburn | 20 mg/day | ||
hypersecretory conditions | 240 mg/day in divided doses | ||
lansoprazole (Prevacid®, generics) | 15 mg, 30 mg delayed-release capsules, 15 mg, 30 mg orally disintegrating tablets | duodenal ulcer | 15 mg/day |
EE | 30 mg/day | ||
gastric ulcer | 30 mg/day | ||
GERD - nonerosive | 15 mg/day | ||
H. pylori eradication | 90 mg/day (in divided doses)* | ||
heartburn | 15 mg/day | ||
hypersecretory conditions | 180 mg/day in divided doses | ||
NSAID-associated gastric ulcer | 30 mg/day | ||
omeprazole (Prilosec®, generics) | 10 mg, 20 mg, 20.6 mg, 40 mg delayed-release capsule; 20 mg delayed-release orally disintegrating tablet | duodenal ulcer | 20 mg/day |
EE | 20 mg/day | ||
gastric ulcer | 40 mg/day | ||
GERD - nonerosive | 20 mg/day | ||
heartburn | 20 mg/day | ||
H. pylori eradication |
|
||
hypersecretory conditions | 360 mg/day in divided doses | ||
omeprazole magnesium (Prilosec®) | 2.5 mg, 10 mg packet with delayed-release granules for suspension, 20.6 mg delayed-release capsule | duodenal ulcer | 20 mg/day |
EE | 20 mg/day | ||
gastric ulcer | 40 mg/day | ||
GERD - nonerosive | 20 mg/day | ||
H. pylori eradication |
|
||
hypersecretory conditions | 360 mg/day in divided doses | ||
pantoprazole (Protonix®, generics) | 20 mg, 40 mg delayed-release tablets; 40 mg delayed-release granules for suspension | EE | 40 mg/day |
hypersecretory conditions | 240 mg/day in divided doses | ||
rabeprazole (Aciphex®, generics) | 20 mg delayed-release tablet; 5 mg, 10 mg delayed-release sprinkle capsule | duodenal ulcer | 20 mg/day |
EE | 20 mg/day | ||
GERD - nonerosive | 20 mg/day | ||
H. pylori eradication | 40 mg/day in divided doses* | ||
hypersecretory conditions | 120 mg/day in divided doses |
Legend:
- *Per ACG Guidelines, PPI dosing may be doubled depending on the regimen used for H. Pylori eradication12
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
omeprazole/ sodium bicarbonate (Zegerid®, generics) | 20 mg/1100 mg, 40 mg/1100 mg capsules; 20 mg/1680 mg, 40 mg/1680 mg packets for suspension | duodenal ulcer | 20 mg/day (as mg of omeprazole) |
EE | 20 mg/day (as mg of omeprazole) | ||
gastric ulcer | 40 mg/day (as mg of omeprazole) | ||
GERD - nonerosive | 20 mg/day (as mg of omeprazole) | ||
heartburn | 20 mg/day (as mg of omeprazole) | ||
upper GI bleed risk reduction in critically ill (suspension only) | Day 1: 80 mg (in divided doses); Days 2-14: 40 mg/day (as mg of omeprazole) |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
dexlansoprazole (Dexilant) | 30 mg, 60 mg delayed- release capsules | erosive esophagitis (EE) | 30 mg/day |
heartburn | 30 mg/day | ||
esomeprazole magnesium (Nexium®, generics) | 20 mg, 40 mg delayed-release capsules; 2.5 mg, 5 mg, 10 mg, 20 mg, 40 mg delayed-release powder for suspension | EE | 20 mg/day |
hypersecretory conditions | 240 mg/day in divided doses | ||
risk reduction of NSAID-associated gastric ulcer | 40 mg/day | ||
lansoprazole (Prevacid®, generics) | 15 mg, 30 mg delayed-release capsules, 15 mg, 30 mg orally disintegrating tablets | duodenal ulcer | 15 mg/day |
EE | 15 mg/day | ||
hypersecretory conditions | 180 mg/day in divided doses | ||
hypersecretory conditions | 180 mg/day in divided doses | ||
risk reduction of NSAID-associated gastric ulcer | 15 mg/day | ||
omeprazole (Prilosec®, generics) | 10 mg, 20 mg, 40 mg delayed-release capsule; 20 mg delayed-release orally disintegrating tablet | EE | 20 mg/day |
hypersecretory conditions | 360 mg/day in divided doses | ||
omeprazole magnesium (Prilosec®) | 2.5 mg, 10 mg packet with delayed-release granules for suspension | EE | 20 mg/day |
hypersecretory conditions | 360 mg/day in divided doses | ||
pantoprazole (Protonix®, generics) | 20 mg, 40 mg delayed-release tablets; 40 mg delayed-release granules for suspension | EE | 40 mg/day |
hypersecretory conditions | 240 mg/day in divided doses | ||
rabeprazole (Aciphex®, generics) | 20 mg delayed-release tablet; 5 mg, 10 mg delayed-release sprinkle capsule | EE | 20 mg/day |
hypersecretory conditions | 120 mg/day in divided doses |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
esomeprazole/ naproxen (Vimovo®, generics) | 20 mg immediate-release/375 mg delayed-release, 20 mg immediate-release/500 mg delayed-release tablets | prevention of NSAID-associated gastric ulcer in patients with osteoarthritis, rheumatoid arthritis, ankylosing spondylitis | 40 mg/1000 mg/day in divided doses |
omeprazole/ sodium bicarbonate (Zegerid®, generics) | 20 mg/1100 mg, 40 mg/1100 mg capsules; 20 mg/1680 mg, 40 mg/1680 mg packets for suspension | EE | 20 mg/day (as mg of omeprazole) |
1.2. Pediatrics
The safety and efficacy of dexlansoprazole and esomeprazole/naproxen in patients less than 12 years of age as well as omeprazole/sodium bicarbonate in patients less than 18 years of age have not been established.
Esomeprazole, lansoprazole, omeprazole, pantoprazole, and rabeprazole are FDA-approved for acute use in pediatric patients; doses are age-dependent. Omeprazole is the only PPI approved for erosive esophagitis maintenance therapy in pediatric patients. The maximum recommended daily pediatric doses for these PPIs are summarized in Tables 5-7. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
dexlansoprazole (Dexilant®) | 30 mg, 60 mg delayed- release capsules | erosive esophagitis (EE) |
|
gastroesophageal reflux disease (GERD) - nonerosive |
|
||
esomeprazole magnesium (Nexium®, generics) | 20 mg, 40 mg delayed-release capsules; 2.5 mg, 5 mg, 10 mg, 20 mg, 40 mg delayed-release powder for suspension | EE due to only acid-mediated GERD |
|
EE |
|
||
GERD - nonerosive |
|
||
lansoprazole (Prevacid®, generics) | 15 mg, 30 mg delayed-release capsules, 15 mg, 30 mg orally disintegrating tablets | EE |
|
GERD - nonerosive |
|
||
omeprazole (Prilosec®, generics) | 10 mg, 20 mg, 40 mg delayed-release capsule; 20 mg delayed-release orally disintegrating tablet | EE |
|
GERD - nonerosive |
|
||
omeprazole magnesium (Prilosec®) | 2.5 mg, 10 mg packet with delayed-release granules for suspension | EE |
|
GERD - nonerosive |
|
||
pantoprazole (Protonix®, generics) | 20 mg, 40 mg delayed-release tablets; 40 mg delayed-release granules for suspension | EE |
|
rabeprazole (Aciphex®, generics) | 20 mg delayed-release tablet; 5 mg, 10 mg delayed-release sprinkle capsule | GERD - nonerosive |
|
Legend:
- * dose increased to 30 mg twice daily in some children who remained symptomatic after 2 weeks of therapy at lower doses conditions5
- + may increase to 10 mg daily in those with inadequate response to 5 mg dose using the delayed-release sprinkle capsule13
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
dexlansoprazole (Dexilant®) | 30 mg, 60 mg delayed- release capsules | erosive esophagitis (EE) |
|
omeprazole (Prilosec®, generics) | 10 mg, 20 mg, 40 mg delayed-release capsule; 20 mg delayed-release orally disintegrating tablet | EE |
|
omeprazole magnesium (Prilosec®) | 2.5 mg, 10 mg packet with delayed-release granules for suspension | EE |
|
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
esomeprazole/ naproxen (Vimovo®, generics) | 20 mg immediate-release/375 mg delayed-release, 20 mg immediate-release/500 mg delayed-release tablets | juvenile idiopathic arthritis |
|
Although not FDA-approved due to limited availability of guidelines and well-designed clinical trials, select proton pump inhibitors have been utilized in combination with antibiotic therapy to manage H. pylori in pediatric patients. The 2016 European Society for Pediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) and North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) guidelines for H. pylori management in pediatric patients recommend PPI doses of 1-2 mg/kg/day for 10 to 14 days as combination therapy or sequential therapy. Pediatric dosage recommendations for H. pylori management are summarized in Table 8.
Treatment Option | Maximum Recommended Dosage |
---|---|
|
|
|
|
|
|
|
|
Legend:
- * sequential therapy = PPI + amoxicillin x 5 days followed by PPI + metronidazole + clarithromycin x 5 days
- + if oral metronidazole suspension used, dose may be divided equally every 12 hours
- # if patient is resistant or allergic to amoxicillin and is greater than 8 years old, may substitute amoxicillin with a tetracycline antibiotic
1.3. Dosage in Renal Impairment
Dosage adjustments are not necessary when PPIs are prescribed as monotherapy to patients with renal impairment. Omeprazole/sodium bicarbonate therapy also does not require dosage adjustments in renally impaired patients. However, the esomeprazole/naproxen combination is not recommended for use in patients with a creatinine clearance below 30 ml/min due to the potential for naproxen/naproxen metabolite accumulation and increased risk for adverse events.
2. Duration of Therapy
PPI acute treatment durations for both adult and pediatric patients based on FDA-approved indications are summarized in Tables 9-11.
Drug Name | Treatment Indication | Maximum Therapy Duration |
---|---|---|
dexlansoprazole (Dexilant®) | erosive esophagitis (EE) | 8 weeks |
gastroesophageal reflux disease (GERD) - nonerosive | 4 weeks | |
esomeprazole magnesium (Nexium®, generics) | EE | 8 weeks^ |
GERD | 4 weeks+ | |
heartburn | 14 days* | |
esomeprazole strontium | EE | 8 weeks^ |
GERD | 4 weeks+ | |
lansoprazole (Prevacid®, generics) | duodenal ulcer | 4 weeks |
EE | 8 weeks# | |
gastric ulcer | 8 weeks | |
GERD | 8 weeks | |
heartburn | 14 days* | |
NSAID-associated gastric ulcer |
|
|
omeprazole (Prilosec®, generics) | duodenal ulcer | 4 weeks+ |
EE | 8 weeks# | |
gastric ulcer | 8 weeks | |
GERD | 4 weeks | |
heartburn | 14 days* | |
omeprazole magnesium (Prilosec®) | duodenal ulcer | 4 weeks+ |
EE | 8 weeks# | |
gastric ulcer | 8 weeks | |
GERD | 4 weeks | |
pantoprazole (Protonix®, generics) | EE | 8 weeks# |
rabeprazole (Aciphex®, generics) | duodenal ulcer | 4 weeks+ |
EE | 8 weeks# | |
GERD | 4 weeks+ |
Legend:
- ^ may consider an additional 4- to 8-week treatment course in patients who do not heal with initial treatment
- + may consider an additional 4-week treatment course in patients who do not heal with initial treatment
- # may consider an additional 8-week treatment course in patients with incomplete healing or EE recurrence after initial treatment
- * PPI treatment duration should not exceed 14 days during a 4-month period, unless alternate instructions are provided by a physician
Drug Name | Treatment Indication | Maximum Therapy Duration |
---|---|---|
omeprazole/sodium bicarbonate (Zegerid®, generics) | duodenal ulcer | 4 weeks+ |
EE | 8 weeks# | |
gastric ulcer | 8 weeks | |
GERD | 4 weeks |
Legend:
- + may consider an additional 4-week treatment course in patients who do not heal with initial treatment
- # may consider an additional 8-week treatment course in patients with incomplete healing or EE recurrence after initial treatment
Drug Name | Treatment Indication | Maximum Therapy Duration |
---|---|---|
dexlansoprazole (Dexilant®) | erosive esophagitis (EE) | 12 to 17 years of age: 8 weeks |
esomeprazole magnesium (Nexium®, generics) | EE due to only acid-mediated GERD | 1 to 11 months of age: 6 weeks |
EE | 1 to 11 years of age: 8 weeks 12 to 17 years of age: 8 weeks |
|
symptomatic GERD - nonerosive | 1 to 11 years of age: 8 weeks 12 to 17 years of age: 4 weeks |
|
lansoprazole (Prevacid®, generics) | EE | 1 to 11 years of age: 12 weeks 12 to 17 years of age: 8 weeks |
GERD | 1 to 11 years of age: 12 weeks 12 to 17 years of age: 8 weeks |
|
omeprazole (Prilosec®, generics) | EE | 1 to 16 years of age: 12 weeks∞ |
omeprazole magnesium (Prilosec®) | EE | 1 month to less than 1 year of age: 6 weeks 1 to 16 years of age: 12 weeks^ |
GERD | 1 to 16 years of age: 4 weeks | |
pantoprazole (Protonix®, generics) | EE | Greater than or equal to 5 years of age: 8 weeks |
rabeprazole (Aciphex®, generics) | GERD | 1 to 11 years of age: 12 weeks 12 to 17 years of age: 8 weeks |
Legend:
- ^ may consider an additional 4- to 8-week treatment course in patients who do not heal with initial treatment
- ∞ may consider additional 4- to 8-week treatment course with EE or GERD recurrence
In the acute setting in both adult and pediatric patients older than 11 months of age, 8 weeks of PPI therapy will treat EE and will heal most non-H. pylori duodenal and gastric ulcers. The prescribing health care provider may continue acute dosage regimens for longer than 8 weeks in patients with hypersecretory disease states, esophagitis, or GERD, as well as those patients with risk factors for gastric ulcer treatment failure such as smoking. PPI acute dosage regimens may also exceed 8 weeks in patients with risk factors for delayed duodenal ulcer healing such as daily ethanol use, large ulcers, signs of upper GI bleeding, and/or a previous history of duodenal ulcer. Patients with refractory ulcers, defined as ulcers that do not respond to up to 12 weeks of anti-ulcer therapy, may also require extended PPI therapy. Treatment regimens at acute dosage levels lasting longer than four months (16 weeks) in patients with a diagnosis of acute duodenal or gastric ulcer will be reviewed.
Clinical trials support dexlansoprazole efficacy for maintenance of healed EE and heartburn relief for up to six months in adults and up to 16 weeks in pediatric patients 12 to 17 years of age.
Esomeprazole, when prescribed for risk reduction of NSAID-associated gastric ulcer, may be administered for up to six months, as controlled studies for this indication do not extend beyond this time. Treatment regimens for NSAID-associated gastric ulcers extending beyond designated treatment times for esomeprazole and lansoprazole will be reviewed.
Unless otherwise specified, maintenance therapy, at the recommended daily maintenance dose (Tables 2 and 4), may be continued indefinitely based on patient need. Omeprazole treatment for EE and GERD in pediatric patients may continue indefinitely.
PPI treatment duration in adults for H. pylori eradication is summarized in Table 12. PPI therapy is prescribed for a maximum of 14 days in most patients, as treatment durations exceeding 14 days do not significantly increase eradication rates. In treatment failures, retreatment with an alternate antibiotic regimen has been beneficial. In these circumstances, patients may receive PPI therapy for a maximum of 28 days.
Drug Name | Recommended Therapy Duration |
---|---|
esomeprazole |
|
lansoprazole |
|
lansoprazole |
|
omeprazole |
|
rabeprazole | with triple therapy: 7 days |
Pediatric treatment regimens for H. pylori eradication reported in guidelines and clinical trials should be administered for 10 to 14 days. Pediatric sequential therapy for H. pylori eradication is comprised of a PPI plus amoxicillin administered for 5 days, followed by a PPI plus metronidazole plus clarithromycin given for 5 days.
3. Duplicative Therapy
The combination of two or more PPIs is not supported by the current literature. Additional clinical benefit is not realized when multiple PPIs are prescribed adjunctively. Therefore, concurrent use of multiple PPIs will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for PPIs are summarized in Table 13. Only those drug-drug interactions identified as clinical significance level 1 or contraindicated, or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level# |
---|---|---|---|---|
dexlansoprazole, esomeprazole, lansoprazole, omeprazole | tacrolimus | adjunctive administration may result in increased tacrolimus serum levels especially in intermediate or poor metabolizers of CYP2C19 as tacrolimus is metabolized by CYP3A and select PPIs are substrates for CYP3A4 and CYP2C19 | avoid combination, if possible; if concurrent therapy necessary, monitor serum tacrolimus levels and observe for adverse events; adjust doses as needed | major, moderate (DrugReax) 3-moderate (CP) |
esomeprazole, omeprazole | cilostazol (Pletal®) | adjunctive use may increase cilostazol and one of its active metabolites serum levels and enhance cilostazol pharmacologic/adverse effects as cilostazol is metabolized by CYP2C19 as esomeprazole and omeprazole are CYP2C19 inhibitors | reduce cilostazol dose by 50% when given concurrently with omeprazole or esomeprazole and monitor for enhanced cilostazol pharmacologic/ adverse effects | major (Micromedex) 2-major (CP) |
esomeprazole, omeprazole | citalopram (Celexa®) | adjunctive use may increase citalopram serum levels and enhance citalopram, pharmacologic/adverse effects (including QT interval prolongation) as citalopram is metabolized by CYP2C19 and esomeprazole and omeprazole are CYP2C19 inhibitors | citalopram dose should not exceed 20 mg/day if this drug combination is utilized, and citalopram should be discontinued in patients with persistent QTc measurements greater than 500 ms; monitor for enhanced citalopram pharmacologic/ adverse effects | major (DrugReax), 3-moderate (CP) |
esomeprazole, omeprazole, pantoprazole | methotrexate (MTX) | concurrent administration of select PPIs and MTX (primarily high-dose MTX) may result in elevated MTX parent and metabolite concentrations and the potential for enhanced pharmacologic and adverse effects; these PPIs reduce renal MTX elimination | use combination cautiously; monitor MTX levels and observe patients for signs/symptoms of adverse events; may use alternative PPI or H2RA that does not interact; may not occur with lower MTX doses | major (DrugReax) 2-major (CP) |
PPIs | select azole antifungals (e.g., itraconazole, ketoconazole, posaconazole) | combined administration may decrease antifungal absorption and effectiveness; itraconazole, ketoconazole, and posaconazole dependent on acidic environment for favorable absorption and PPIs increase gastric pH | avoid concurrent administration, if possible; if PPI-antifungal combination necessary, may administer antifungal with acidic beverage (e.g., Coke) to increase absorption; monitor closely for continued antifungal efficacy | major (Micromedex) 2-major (CP) |
PPIs | clopidogrel (Plavix®) | combined administration may attenuate clopidogrel effects on platelet aggregation, increase potential risk of secondary acute cardiovascular events following percutaneous coronary intervention or acute coronary syndrome; exact mechanism for interaction unknown, but PPIs may delay or minimize clopidogrel conversion to its active form by competitively inhibiting CYP2C19 | avoid combined use, if possible; H2RAs# other than cimetidine or pantoprazole (has less CYP2C19 inhibitory activity) are suitable alternatives for acid suppressive therapy in patients requiring clopidogrel | major (DrugReax) 2-major (CP) |
PPIs | dasatinib (Sprycel®) | adjunctive administration for extended duration may result in reduced dasatinib exposure and serum levels as dasatinib dependent on acidic gastric pH for solubility and absorption | combined use not recommended; alternative acid suppressives (e.g., antacids) should be given 2 hours before or 2 hours after dasatinib dose for optimal efficacy | major (DrugReax) 2-major (CP) |
PPIs | erlotinib (Tarceva®) | adjunctive administration may decrease erlotinib absorption and reduce effectiveness as erlotinib solubility, which is pH dependent, is reduced with PPI therapy | avoid combination, if possible; if adjunctive therapy necessary, use lowest effective PPI dose, monitor for reduced erlotinib efficacy, and adjust erlotinib dose as needed; may use alternate acid suppressive therapy (e.g., H2RAs, antacids); antacid and erlotinib doses should be separated by several hours | major (DrugReax), 2-major (CP) |
PPIs | mycophenolate | combined administration may result in decreased mycophenolic acid serum levels and reduced therapeutic efficacy, most likely due to decreased mycophenolate absorption with increased gastric pH | avoid combined use, if possible; if adjunctive therapy necessary, closely monitor mycophenolic acid serum levels and adjust mycophenolate doses as necessary | major (DrugReax), 3-moderate (CP) |
PPIs | select protease inhibitors (e.g., atazanavir, indinavir, nelfinavir) | concurrent administration may result in reduced protease inhibitor serum levels and effectiveness and increased potential for resistance, as PPIs may interfere with protease inhibitor solubility and absorption by increasing gastric pH | avoid PPI and atazanavir, indinavir, or nelfinavir combinations | major (DrugReax), 1-contraindicated: atazanavir; 2-major: nelfinavir, indinavir (CP) |
PPIs | Atezolizumab (Tecentriq®) | use within 30 days of taking a PPI may decrease microbiota alpha diversity associated with enhanced antitumor immune activity of atezolizumab | Avoid concurrent use, if possible | Major (Micromedex) |
PPIs | rilpivirine (Edurant®) | adjunctive administration may promote rilpivirine treatment failure and potential for impaired virologic response and rilpivirine/NNRI† resistance as rilpivirine requires more acidic gastric pH for absorption | combined administration contraindicated | contraindicated (DrugReax) 1-contraindicated (CP) |
PPIs | other agents with solubility affected by changes in gastric pH (e.g., acalabrutinib, bosutinib, pazopanib, ponatinib, tyrosine kinase inhibitors, vismodegib) | concomitant administration may result in reduced bioavailability and activity of agents requiring low gastric pH for solubility as PPIs increase gastric pH | avoid combination, if possible; if adjunctive therapy necessary, use lowest effective PPI dose, monitor for reduced efficacy of agents requiring low gastric pH for solubility, and adjust dose as needed; may use alternate acid suppressive therapy (e.g., H2RAs, antacids); antacid and doses for agents with solubility issues should be separated by several hours | major (DrugReax) |
PPIs | vitamin K antagonists (e.g., warfarin) | concurrent administration may result in elevated INR^ levels and prothrombin time and enhanced anticoagulant effects; warfarin is metabolized by CYP450 (eg CYP2C19) and omeprazole is a CYP2C19 inhibitor, but mechanism for other PPIs is not well known | monitor INR levels and observe for bleeding issues/adverse effects; adjust warfarin doses as needed | moderate (DrugReax) 3-moderate (CP) |
Legend:
- * CP = Clinical Pharmacology
- # histamine (H2) receptor antagonists
- † non-nucleoside reverse transcriptase inhibitor
- ^ International Normalized Ratio
5. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: November 21, 2022).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed November 21, 2022.
- Esomeprazole (Nexium®) package insert. AstraZeneca Pharmaceuticals LP, March 2022.
- Omeprazole (Prilosec®) package insert. Lannett Company, February 2022.
- Omeprazole magnesium delayed-release oral suspension (Prilosec®) package insert. Covis Pharma, March 2022.
- Lansoprazole (Prevacid®) package insert. Takeda Pharmaceuticals America, Inc., March 2022.
- Pantoprazole (Protonix®) package insert. Pfizer, March 2022.
- Dexlansoprazole (Dexilant®) package insert. Takeda Pharmaceuticals America, Inc., March 2022.
- Rabeprazole (Aciphex®) package insert. Woodward Pharma Services, March 2022.
- Omeprazole/sodium bicarbonate (Zegerid®) package insert. Santarus, Inc., March 2022.
- Naproxen/esomeprazole (Vimovo®) package insert. Horizon Pharma USA Inc., March 2022.
- Chey WD, Leontiadis GI, Howden CW, Moss SF. ACG Clinical Guideline: Treatment of Helicobacter pylori Infection [published correction appears in Am J Gastroenterol. 2018 Jul;113(7):1102]. Am J Gastroenterol. 2017;112(2):212-239. doi:10.1038/ajg.2016.563
- Rabeprazole (Aciphex®) package insert. Sarras Health, December 2020.
- Jones NL, Koletzko S, Goodman K, et al., on behalf of ESPGHAN, NASPGHAN. Joint ESPGHAN/NASPGHAN guidelines for the management of Helicobacter pylori in children and adolescents (update 2016). J Pediatr Gastroenterol Nutr. 2017;64:991-1003.
- Love BL. Peptic ulcer disease and related disorders. In: DiPiro JT, Yee GC, Posey L, Haines ST, Nolin TD, Ellingrod V. eds. Pharmacotherapy: A Pathophysiologic Approach, 12e. McGraw-Hill; Accessed November 29, 2022. https://accesspharmacy.mhmedical.com/content.aspx?bookid=3097§ionid=267240133
- Ramakrishnan K, Salinas RC. Peptic ulcer disease. Am Fam Physician. 2007;76(7):1005-1012.
- Ertem D. Clinical practice: Helicobacter pylori infection in childhood. Eur J Pediatr. 2013;172(11):1427-34.
Quetiapine (low dose)
Quetiapine (low dose) - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Oct. 13, 2023
- Oct. 2021
- Sept. 2019
- Sept. 2017
- Dec. 2015
- March 2014
- May 2012
- July 2010
- May 2007
- March 2007
- Initially developed
- Jan. 2007
1. Dosage
HHSC does not support low-dose quetiapine use as non-FDA-approved sleep aid monotherapy. Data included in these criteria address available studies evaluating low-dose quetiapine in insomnia, the limits of these studies, as well as risks associated with quetiapine use for this indication. Additionally, evidence-based use of lower quetiapine doses for FDA-approved and pediatric purposes is also discussed.
1.1. Adults
Quetiapine, a dibenzothiazepine antipsychotic agent, is FDA-approved for acute manic and mixed episodes of bipolar disorder, acute depressive episodes associated with bipolar disorder, maintenance therapy of bipolar disorder when used adjunctively with lithium or divalproex, major depressive disorder when used as adjunctive therapy to antidepressants (extended-release formulation only), and schizophrenia.1-6 Recommended quetiapine dosages are summarized in Table 1.
Treatment Indication | Dosage Form | Usual Dosage Range | Maximum Recommended Dosage |
---|---|---|---|
BD treatment: depression | IR, ER | 300 mg/day | 300 mg/day |
BD treatment: mania | IR, ER | 400-800 mg/day | 800 mg/day |
BD: maintenance | IR, ER | 400-800 mg/day | 800 mg/day |
Major depressive disorder, adjunctive therapy | ER | 150-300 mg/day | 300 mg/day |
Major depressive disorder, adjunctive therapy | ER | 150-300 mg/day | 300 mg/day |
Schizophrenia: acute | IR | 150-750 mg/day | 750 mg/day |
Schizophrenia: maintenance | IR, ER | 00-800 mg/day | 800 mg/day |
Legend:
- BD = bipolar I disorder
- ER = extended-release
- IR = immediate-release
While not FDA-approved, quetiapine has been evaluated in adults with insomnia utilizing doses less than 150 mg/day in the literature. Measurements commonly used to assess insomnia treatment effectiveness include sleep period time (SPT; the duration of time from sleep onset to final awakening), total sleep time (TST; the difference of time between SPT and the time spent awake), and sleep efficiency (SE; the ratio of TST compared to the amount of time spent in bed).7 Patient-reported outcomes are also often assessed. The Spiegel Sleep Questionnaire (SSQ) is comprised of 7 items that are each scored from 1 to 5, with higher scores indicating positive outcomes.8 The Insomnia Severity Index scale (ISI) is a tool used to measure a patient’s perception of their insomnia. This instrument also consists of 7 items, but each item is scored from 0 to 4. Higher scores correlate with more severe insomnia.9 Clinical evidence of low-dose quetiapine use for insomnia is exhibited in Table 2.
Study | Population | Design | Intervention | Outcomes |
---|---|---|---|---|
Cohrs et al. 7 (2004) | 14 patients:
| DB, PC, R, crossover, single-center study Duration: 3 consecutive nights, 4 days apart | Quetiapine:
| Under standard sleep laboratory conditions:
Under Acoustic Stress:*
|
Juri et al. 10 (2005) | 14 patients:
| Open-label study Duration: 12 weeks | Quetiapine:
| Sleep Latency:
Safety:
|
Fernando et al. 11 (2005) | 1 patient:
| Case report | Quetiapine: titrated up to 200 mg at bedtime | Observations:
|
Sokolski et al. 12 (2006) | 1 patient:
| Case report | Quetiapine:
| Observations:
Safety:
|
Wiegand et al. 13 (2008) | 18 patients:
| Open-label pilot study Duration: 6 weeks | Quetiapine:
| Objective Sleep Parameters:
Safety:
|
Terán et al. 14 (2008) | 52 patients:
| Retrospective study Follow-up period of at least 60 days | Quetiapine:
| Change in SSQ:
Safety:
|
Pasquini et al. 15 (2009) | 6 patients:
| Case series Duration: 6 weeks | Quetiapine:
| Efficacy:
Safety:
|
Cates et al. 16 (2009) | 43 patients:
| Retrospective study | Quetiapine:
| Efficacy:
|
Tassniyom et al. 17 (2010) | 13 patients:
| R, DB, PC Sleep diary kept for 1 week prior to treatment | Quetiapine (Q):
Placebo (P):
| Efficacy:
|
Legend:
- BMI = body mass index
- DB = double-blind
- ISI = Insomnia Severity Index scale
- PC = placebo-controlled
- R = randomized
- SE = sleep efficiency
- SL = sleep latency
- SPT = sleep period time
- SSQ = Spiegel Sleep Questionnaire
- TST = total sleep time
- *Acoustic Stress = staccato piano tones ranging in pitch and tone intensity played in short spurts during the 8 hour bedtime period (duration: 4-5 seconds; interval: 30 – 90 seconds)
Based on available clinical evidence, low-dose quetiapine has shown some benefit for adult patients suffering from insomnia.7-19 Quetiapine not only improved the quantity of sleep, by increasing TST and SE, but also the quality of sleep, by increasing patient-reported outcomes. However, available results are based on data from case reports and uncontrolled trials and include few patients over 65 years of age or those in nursing homes. Too, the mechanism of action for low-dose quetiapine targets histamine H1 and alpha-1 adrenergic receptors rather than serotonergic and dopaminergic receptors, which may aid in promoting sleep but does not significantly impact mood or psychotic disorders. Additionally, quetiapine has been assigned black box warnings: increased mortality in elderly patients with dementia-related psychosis; and increased risk of suicidality in children, adolescents, and young adults taking antidepressants for major depressive and other psychiatric disorders. Other warnings include leukopenia, neutropenia, neuroleptic malignant syndrome, metabolic changes, and agranulocytosis.2, 3, 19-21 Commonly reported adverse events include xerostomia, morning sedation, and weight gain. Reports of weight gain despite the use of low quetiapine doses may predispose some patients to metabolic disturbances (e.g., diabetes, dyslipidemia) associated with second generation antipsychotic (SGA) use. 16, 19
Additionally, a nationwide active comparator-controlled study published in 2022 found that the use of low-dose quetiapine increases the risk of major adverse cardiovascular events and cardiovascular death compared to nonbenzodiazepine hypnotic drugs in the intention-to-treat analysis. The as-treated analysis found that low-dose quetiapine was associated with increased risk of major adverse cardiovascular events, non-fatal ischemic stroke, and cardiovascular death. Risk was found to be greater in females and those 65 years of age or older at initiation of therapy. The study also found that low-dose quetiapine was associated with increased risk of major adverse cardiovascular events, non-fatal ischemic stroke, and cardiovascular death when compared to selective serotonin reuptake inhibitors.20 Low-dose quetiapine should be avoided or used with caution for the off-label treatment of insomnia, especially when other FDA-approved agents for insomnia are available and more economically feasible.21 Patients with co-morbid conditions and insomnia, however, may find some benefit from low-dose quetiapine, with close monitoring for potential long-term adverse events12, 22.
A comparative effectiveness review published by the Agency for Healthcare Research and Quality (AHRQ) evaluated physician prescribing patterns for off-label uses of atypical antipsychotics. Researchers found one small trial (n = 13) in which physicians prescribed quetiapine to patients for insomnia and concluded that quetiapine may not be effective in managing insomnia; the strength of evidence used to determine the efficacy of quetiapine in insomnia was very low. 24
Quetiapine doses less than 150 mg/day are not routinely recommended. However, elderly patients (defined as 65 years of age and older) and debilitated patients may not tolerate higher initial quetiapine doses due to decreased oral quetiapine clearance. Slower titration schedules using doses of 25-50 mg/day until clinical response is achieved are necessary to avoid adverse events.1-6 Some patients have been managed with doses as low as 25 mg to 50 mg/day for psychosis and bipolar disorder. 25-27 Quetiapine is not FDA-approved for use in doses lower than 150 mg/day, except in elderly and debilitated patients, and will be reviewed.
1.2. Pediatrics
Quetiapine is FDA-approved for acute mania in bipolar disorder in pediatric patients 10-17 years of age, and acute management of schizophrenia in adolescents 13-17 years. Pediatric quetiapine dosages are summarized in Table 3. An additional column reflecting literature-based dosing included in the Texas Health and Human Services Psychotropic Medication Utilization Parameters for Children and Youth in Texas Public Behavioral Health (6th Version) is included in Table 3.
Treatment Indication | Dosage Form | Usual Dosage Range Per Age Group | Literature Based Maximum Dosage | Maximum Recommended Dosage |
---|---|---|---|---|
BD treatment: acute mania | IR, ER | 10-17 years of age: 400-600 mg/day |
| 600 mg/day |
Schizophrenia: acute | IR, ER | 13-17 years of age: 400-800 mg/day | Age 10-17 years: 800 mg/day | 800 mg/day |
Legend:
- BD = bipolar I disorder
- ER = extended-release
- IR = immediate-release
Currently there is no FDA-approved indication for low-dose quetiapine use (150 mg/day or less) in the pediatric population. Data have been published that address quetiapine safety and efficacy for the treatment of various conditions in the pediatric population, and some of the patients included were taking quetiapine doses of 150 mg/day or less. Summary details of these publications can be found in Table 4.
Evidence suggests that quetiapine use in children for a variety of indications including conduct disorder, attention-deficit/hyperactivity disorder, bipolar disorder, and other psychoses may be beneficial as monotherapy in some situations and as combination therapy in others. Although most trials used a mean dose greater than 300 mg/day, all studies presented in Table 4 utilized quetiapine doses of 150 mg/day or less. Based on the trials collectively, using quetiapine in patients younger than 18 years of age resulted in significantly improved scores on many of the psychiatric evaluations. Although average doses in the trials exceeded 150 mg/day, efficacy did not seem to be limited to higher quetiapine doses.29-39 However, many of these trials had several limitations that are important to consider. All trials were open-label trials, included very small numbers of participants, and were relatively short in duration. Only one trial was randomized, and most did not have a comparator or control group. 35-38
While efficacy results seem promising from these trials, there are important adverse effects associated with quetiapine use in children. Weight gain, other metabolic changes, and sedation/somnolence, well known adverse effects associated with quetiapine use, were frequently reported by trial participants 35-38. Moreno et al.40 published a trial examining the metabolic effects of quetiapine and other SGA medications on children being treated for bipolar disorder as well as other psychotic and nonpsychotic disorders. This study found that after three months of treatment with an SGA, over 70% of patients experienced abnormal weight gain. Due to the frequency of weight gain and sedation occurring with SGA use, Penzner et al.41 studied the effect of co-prescribing a stimulant, which can cause weight loss and insomnia, to neutralize the adverse effects of the antipsychotic. Investigators found no significant differences in body composition and metabolic profiles between SGA-treated patients managed concurrently with or without stimulants.
Low-dose quetiapine treatment for children with various psychotic or behavioral disorders has been beneficial in some cases. However, possible adverse events that may negatively impact health and quality of life need to be considered before treatment initiation.
Study | Age | Quetiapine Dosage | Disease State |
---|---|---|---|
Stathis et al. 29 | 15 to 17 years of age (mean age 16.7 yrs) | dose range 50 mg -200 mg/day (mean dose: 133 mg) | Posttraumatic stress disorder |
Findling et al. 30 (2006) | 6-12 years of age (mean age 8.9 yrs) | range 75mg -300 mg/day (median dose: 150 mg/day; mean dose: 4.4 mg/kg/day) | Conduct disorder |
Marchand et al. 31 | 4-17 years of age (mean age 10.8 yrs) | dose range 100 mg -1000 mg/day (mean dose: 407, plus or minus 230 mg/day) | Bipolar disorder |
Findling et al. 32 (2004) | 12-17 years of age (mean age 14.6, plus or minus 2.3 yrs) | mean maximum total daily dose range 100 mg - 450 mg/day (overall mean dose: 291.7 mg/day) | Autistic disorder |
Mukaddes et al. 33 | 8-16 years of age (mean age 11.4 plus or minus 2.4 yrs) | dose range 50 mg - 100 mg/day (mean dose: 72.9 mg plus or minus 22.5 mg/day) | Tourette’s disorder |
Tufan 34 | 17-year-old-female | 100 mg/day in divided doses (plus sertraline 50 mg/day) | Autism; pervasive developmental disorder with mental retardation and self-injurious behavior |
Arango et al. 35 | 12-18 years of age | dose range 73.2 mg – 992.4 mg/day (mean dose: 532.8 mg/day) | Schizophrenia; bipolar disorder |
Findling et al. 36 (2007) | 6-12 years of age | dose range 75 mg-350 mg/day (mean dose at study end: 158.3 mg/day) (methylphenidate administered adjunctively in majority of patients) | Conduct disorder |
Duffy et al. 37 | 13-20 years of age |
| Bipolar disorder |
Kronenberger et al. 38 | 12-16 years of age | dose range 120.2 mg – 538.2 mg/day (mean dose: 329.2 mg/day) (given in conjunction with methylphenidate) | ADHD*-combined type and disruptive behavior disorder with conduct disorder |
Golubchik et al. 39 | 13-17 years of age | dose range 50 mg-150 mg/day (mean dose: 122.7 plus or minus 39.5 mg/day) | Autistic spectrum disorder |
2. Duration of Therapy
Low-dose quetiapine (less than 150 mg/day) is only FDA-approved as part of a drug titration schedule to aid patients in getting to the target quetiapine dosage goal (see Table 1). Therefore, quetiapine dosages less than 150 mg/day should not be prescribed for more than 30 days, except in elderly and debilitated patients. Quetiapine dosages less than 150 mg/day prescribed for greater than 30 days, except in elderly and debilitated patients, are not recommended and will be reviewed.
3. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for quetiapine are summarized in Table 5. Only those drug-drug interactions classified as clinical significance severe or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
Atypical antipsychotics (AAs) | Antihypertensive agents | Potential for enhanced antihypertensive effects due to AA-associated alpha1-adrenergic receptor antagonism | Use cautiously together; monitor for amplified hypotensive effects | moderate (CP) |
AAs | CNS depressants | Potential for additive CNS effects | Use cautiously together; observe patients for enhanced CNS adverse effects | moderate (CP) |
AAs (except pimavanserin) | Drugs affecting seizure threshold (e.g., tramadol) | Increased seizure risk as AAs have been associated with seizures (incidence varies) | Avoid drug combination if possible; if combination necessary, closely monitor patients for seizure activity and discontinue therapy as indicated | major (CP) |
AAs | Metoclopramide | Adjunctive therapy enhances potential for increased extrapyramidal symptoms (EPS) and neuroleptic malignant syndrome (NMS) as both agents block dopamine receptors | Combination contraindicated by metoclopramide manufacturer; if combination necessary, monitor for signs/symptoms of EPS or NMS-discontinue metoclopramide if symptoms develop | severe (CP) |
Select AAs (aripiprazole, brexpiprazole, cariprazine, clozapine, iloperidone, pimavanserin, quetiapine, ziprasidone) | CYP3A4 inhibitors (e.g., ketoconazole, ritonavir*) | Potential for decreased AA clearance, increased AA serum concentrations, and enhanced pharmacologic/ adverse effects as select AAs metabolized by CYP3A4 | Monitor for enhanced AA pharmacologic/ adverse effects and adjust doses as necessary (50% dose reduction recommended for aripiprazole, brexpiprazole, iloperidone) | major, moderate (CP) |
Select AAs (aripiprazole, brexpiprazole, clozapine, olanzapine, pimavanserin, quetiapine, risperidone, ziprasidone) | CYP3A4 inducers (e.g., carbamazepine**, phenytoin) | Potential for significant reductions in AA plasma concentrations (by as much as 50%) due to enhanced AA hepatic microsomal metabolism | Monitor AA efficacy in patients; adjust doses as necessary when CYP3A4 inducer added, deleted, or changed to therapeutic regimen (brexpiprazole dose should be doubled over 1-2 weeks when prescribed with CYP3A4 inducer) | major, moderate (CP) |
Select AAs (aripiprazole, asenapine, clozapine, iloperidone, olanzapine, paliperidone, pimavanserin, quetiapine, risperidone, ziprasidone) | QTc interval-prolonging medications | Potential for increased cardiotoxicity (e.g., torsades de pointes, cardiac arrest) due to additive QT interval prolongation | Avoid concurrent use; if combination necessary, closely monitor cardiac function; discontinue therapy in patients with QTc measurements greater than 500 msec | severe, major (CP) |
4. References
- IBM Micromedex® DRUGDEX® (electronic version). IBM Watson Health, Greenwood Village, Colorado, USA. Available at: https://www-micromedexsolutions-com.libproxy.uthscsa.edu/ (cited: August 25, 2023).
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2023. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed August 25, 2023.
- Quetiapine tablets (Seroquel®) package insert. AstraZeneca Pharmaceuticals, January 2022.
- Quetiapine extended-release tablets (Seroquel XR®) package insert. AstraZeneca Pharmaceuticals, January 2022.
- Cohrs S, Rodenbeck A, Guan Z, et. al. Sleep-promoting properties of quetiapine in healthy subjects. Psychopharmacology. 2004;174:421-9.
- Klimm HD, Dreyfus JF, Delmotte M. Zopiclone versus nitrazepam: a double-blind comparative study of efficacy tolerance in elderly patients with chronic insomnia. Sleep. 1987;10(1):73-8.
- Bastien CH, Vallieres A, Morin CM. Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Med. 2001;2:297-307.
- Juri C, Chana P, Tapia J, et al. Quetiapine for insomnia in Parkinson’s disease: results from an open label trial. Clin Neuropharmacol. 2005;28(4):185-7.
- Fernando A, Auckland GC. Chronic insomnia secondary to chronic pain responding to quetiapine. Australas Psychiatry. 2005;13(1):86.
- Sokolsji KN, Brown BJ. Quetiapine for insomnia associated with refractory depression exacerbated by phenelzine. Ann Pharmacother. 2006;40:567-70.
- Wiegand MH, Landry F, Buckner T, et al. Quetiapine in primary insomnia: a pilot study. Psychopharmacology. 2008;196:337-8.
- Teran A, Majadas S, Galan J. Quetiapine in the treatment of sleep disturbances associated with addictive conditions: a retrospective study. Subst Use Misuse. 2008;43:2169-71.
- Pasquini M, Speca A, Biondi M. Quetiapine for tamoxifen-induced insomnia in women with breast cancer. Psychosomatics. 2009;50(2):159-61.
- Cates ME, Jackson CW, Feldman JM, et al. Metabolic consequences of using low-dose quetiapine for insomnia in psychiatric patients. Community Ment Health J. 2009;45:251-4.
- Tassniyom K, Paholpak S, Tassniyom S, Kiewyoo J. Quetiapine for primary insomnia: a double-blind, randomized controlled trial. J Med Assoc Thai. 2010;93(6):729-34.
- Wine JN, Sanda C, Caballero J. Effects of quetiapine on sleep in nonpsychiatric and psychiatric conditions. Ann Pharmacother. 2009;43:707-13.
- Anderson SL, Vande Griend JP. Quetiapine for insomnia: A review of the literature. Am J Health-Syst Pharm. 2014;71(5):394-402.
- Gugger JJ, Cassagnol M. Low-dose quetiapine is not a benign sedative-hypnotic agent. Am J Addict. 2008;17(5):454-5.
- Zarowitz BJ. Quetiapine not quiet-a-pine- not a sleeper. Geriatr Nurs. 2011;32(1):46-8.
- Højlund M, Andersen K, Ernst MT, Correll CU, Hallas J. Use of low-dose quetiapine increases the risk of major adverse cardiovascular events: results from a nationwide active comparator-controlled cohort study. World Psychiatry. 2022 Oct;21(3):444-451.
- Coe HV, Kong IS. Safety of low doses of quetiapine when used for insomnia. Ann Pharmacother. 2012;46(5):718-22.
- Drugs for chronic insomnia. Med Lett Drugs Ther. 2018 Dec 17;60(1562):201-5.
- Agency for Healthcare Research and Quality. Off-label use of atypical antipsychotics: an update. Executive Summary. Comparative Effectiveness Review No. 43. (AHRQ Pub. No. 11-EHC087-1). Available at: https://www.ncbi.nlm.nih.gov/books/NBK66081/pdf/Bookshelf_NBK66081.pdf. Accessed August 28, 2023.
- Sajatovic M, Madhusoodanan S, Coconcea N. Managing bipolar disorder in the elderly: defining the role of the newer agents. Drugs Aging. 2005;22:39-54.
- Yang CH, Tsai SJ, Wsang JP. The efficacy and safety of quetiapine for treatment of geriatric psychosis. J Psychopharmacol. 2005;19:661-6.
- Tariot PN, Ismail MS. Use of quetiapine in elderly patients. J Clin Psychiatry. 2002;63(Suppl13):21-6.
- Texas Health and Human Services. Psychotropic medication utilization parameters for children and youth in Texas public behavioral health (6th version), June 2019. Available at: https://hhs.texas.gov/sites/default/files/documents/doing-business-with-hhs/provider-portal/facilities-regulation/psychiatric/psychotropic-medication-utilization-parameters.pdf. Accessed August 28, 2023.
- Stathis S, Martin G, McKenna JG. A preliminary case series on the use of quetiapine for posttraumatic stress disorder in juveniles within a youth detention center. J Clin Psychopharmacol. 2005;25:539-44.
- Findling RL, Reed MD, O’Riordan MA, et al. Effectiveness, safety, and pharmacokinetics of quetiapine in aggressive children with conduct disorder. J Am Acad Child Adolesc Psychiatry. 2006;45:792-800.
- Marchand WR, Wirth L, Simon C. Quetiapine adjunctive and monotherapy for pediatric bipolar disorder: a retrospective chart review. J Child Adolesc Psychopharmacol. 2004;14:405-11.
- Findling RL, McNamara NK, Gracious BL, et al. Quetiapine in nine youths with autistic disorder. J Child Adolesc Psychopharmacol. 2004;14:287-94.
- Mukaddes NM, Abali O. Quetiapine treatment of children and adolescents with Tourette's disorder. J Child Adolesc Psychopharmacol. 2003;13:295-9.
- Tufan AE. Adjunctive quetiapine may help depression comorbid with pervasive developmental disorders. Prog Neuropsychopharmacol Biol Psychiatry. 2009;33:1570-1.
- Arango C, Robles O, Parellada M, et al. Olanzapine compared to quetiapine in adolescents with a first psychotic episode. Eur Child Adolesc Psychiatry. 2009;18:418-28.
- Findling RL, Reed MD, O’Riordan MA, et al. A 26-week open-label study of quetiapine in children with conduct disorder. J Child Adolesc Psychopharmacol. 2007;17(1):1-9.
- Duffy A, Milin R, Grog P. Maintenance treatment of adolescent bipolar disorder: open study of the effectiveness and tolerability of quetiapine. BMC Psychiatry. 2009;9(4).
- Kronenberger WG, Giauque AL, Lafata D, et al. Quetiapine addition in methylphenidate treatment-resistant adolescents with comorbid attention-deficit/hyperactivity disorder, conduct/oppositional-defiant disorder, and aggression: a prospective, open-label study. J Child Adolesc Psychopharmacol. 2007;17(3):334-7.
- Golubchik P, Sever J, Weizman A. Low-dose quetiapine for adolescents with autistic spectrum disorder and aggressive behavior: open-label trial. Clin Neuropharmacol. 2011;34(6):216-9.
- Moreno C, Merchan-Naranjo J, Alvarez M, et al. Metabolic effects of second-generation antipsychotics in bipolar youth: comparison with other psychotic and nonpsychotic diagnoses. Bipolar Disord. 2010;12:172-84.
- Penzner JB, Dudas M, Saito E, et al. Lack of effect of stimulant combination with second-generation antipsychotics on weight gain, metabolic changes, prolactin levels, and sedation in youth with clinically relevant aggression or oppositionality. J Child Adolesc Psychopharmacol. 2009;19:563-73.
Rifaximin (Xifaxan)
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 22, 2022; May 2018; June 2017; June 2015; October 2013; December 2011; April 2010; December 2006.
- Initially developed
- September 2006
1. Dosage
1.1. Adults
Rifaximin is not indicated for treatment of systemic infections as less than 0.4% of drug is absorbed after oral administration1.
Rifaximin, a derivative of rifampin, is a minimally systemically absorbed antibiotic with bactericidal activity against aerobic and anaerobic gram-positive and gram-negative microorganisms. Rifaximin is FDA-approved for use in managing travelers’ diarrhea due to noninvasive strains of Escherichia coli (E. coli) in adults and children 12 years of age and older and should not be used in diarrhea due to pathogens other than E. coli or complicated by fever or blood in the stool1-12.
Rifaximin is also FDA-approved for reducing risk of overt hepatic encephalopathy (HE) recurrence in patients 18 years of age and older1, 2, 6-8. In a randomized, double-blind, placebo-controlled trial over a six-month time period, Bass and cohorts evaluated rifaximin safety and efficacy to maintain remission from HE episodes in 299 adult outpatients receiving concurrent lactulose therapy with a recent history of recurrent, overt HE. Results showed that the risk of a breakthrough HE episode was significantly lower with rifaximin therapy compared to placebo [hazard ratio (HR), 0.42; 95% confidence interval (CI), 0.28 to 0.64; P less than 0.001]. The risk of hospitalization was also significantly lower in rifaximin-treated patients compared to those receiving placebo (HR, 0.50; 95% CI, 0.29 to 0.87; P = 0.01)13.
In May 2015, rifaximin gained FDA approval for treating irritable bowel syndrome with diarrhea (IBS-D) in adults1, 2. Pimentel and cohorts compared rifaximin efficacy to placebo in two separate trials involving 1260 patients with IBS without constipation. Patients were randomly administered rifaximin 550 mg three times daily or placebo for 14 days, and then followed for 10 weeks. Results showed that rifaximin was significantly better than placebo in relieving IBS symptoms (e.g., bloating; abdominal pain; loose, watery stools)14. Data have also shown that rifaximin-treated patients respond better than those receiving placebo with a first recurrence of IBS-D2. A few small studies have evaluated rifaximin use in irritable bowel syndrome/Crohn’s disease. Gionchetti and cohorts assessed rifaximin efficacy compared to placebo in 26 ulcerative colitis patients unresponsive to steroid therapy and found that while overall clinical response was not significantly better than placebo, rifaximin-treated patients showed a significant reduction in stool frequency and rectal bleeding15. Prantera and colleagues evaluated rifaximin dosing and efficacy compared to placebo in 83 Crohn’s disease patients and found no statistical difference in clinical response or clinical remission but observed a significantly reduced number of treatment failures in rifaximin-treated patients16.
Although not FDA-approved, rifaximin has shown some efficacy in treatment of hepatic encephalopathy and infectious diarrhea due to Salmonella and noninvasive Shigella17-27. Use of rifaximin for the treatment of infectious diarrhea due to Campylobacter spp. is extremely limited, and generally not recommended as a first or second line agent20,28,29. One small, open-label, randomized trial in 54 Korean patients with liver cirrhosis evaluated rifaximin therapy in hepatic encephalopathy and found rifaximin comparable to lactulose in improving blood ammonia, flapping tremor and mental status23. Similarly, Mas et al, in a randomized, double-blind, double-dummy trial, compared rifaximin to lactitol in 103 acute hepatic encephalopathy patients and found rifaximin as effective as lactitol in managing hepatic encephalopathy episodes. Investigators found rifaximin significantly better than lactitol in improving ammonia levels and EEG grade, which led to better portal-systemic encephalopathy scores in rifaximin-treated patients24. Miglio and cohorts assessed rifaximin benefit and tolerability when compared to neomycin in 49 cirrhosis patients with hepatic encephalopathy and found rifaximin as effective as neomycin in improving neuropsychiatric signs and blood ammonia levels.25
Table 1 summarizes adult oral recommended maximum rifaximin dosages for FDA-approved uses. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
rifaximin (Xifaxan®) | 200 mg tablets | travelers’ diarrhea (due to noninvasive E. coli strains) | 200 mg three times daily (600 mg/day) x 3 days1-9 |
rifaximin (Xifaxan®) | 550 mg tablets | reduce the risk of HE recurrence | 550 mg twice daily (1100 mg/day)1, 2, 6-8, 13 |
550 mg tablets | IBS-D | 550 mg 3 times daily for 14 days; retreatment for patients with symptom recurrence may occur up to 2 times with same dosage regimen1, 2, 6-8 |
Legend:
- HE = hepatic encephalopathy; IBS-D = irritable bowel syndrome with diarrhea
1.2. Pediatrics
Rifaximin is FDA-approved in children 12 years of age and older for use in managing travelers’ diarrhea due to noninvasive strains of E. coli. The recommended oral rifaximin dose for pediatric patients is 200 mg three times daily for three days. Rifaximin should not be prescribed for use in diarrhea caused by pathogens other than E. coli or complicated by fever or blood in the stool1, 6-8.
The safety and efficacy of rifaximin 200 mg for travelers’ diarrhea in pediatric patients younger than 12 years of age or rifaximin 550 mg for HE or IBS-D in pediatric patients younger than 18 years of age have not been established1, 6-8.
2. Duration of Therapy
The recommended treatment duration for rifaximin use in E. coli-mediated travelers’ diarrhea is a maximum of three days.1, 9-11 Treatment regimens lasting greater than three days will be reviewed.
Rifaximin 550 mg tablets may be prescribed on a chronic basis (i.e., for at least 6 months) to reduce the risk of HE recurrence, based on results from the Bass and colleagues study13.
Rifaximin 550 mg tablets may be administered for 14 days to treat acute IBS-D episodes and may be repeated for up to two IBS-D recurrences per treatment course. IBS-D is a chronic condition, however, and rifaximin may be prescribed on a chronic basis to manage this disease state1, 2.
3. Duplicative Therapy
Concurrent administration of rifaximin with other approved antibiotic therapies for travelers’ diarrhea (i.e., azithromycin, fluoroquinolones, and trimethoprim-sulfamethoxazole) is not recommended as these combinations do not provide additional therapeutic benefit and may result in enhanced adverse events. Patient profiles containing concurrent prescriptions for rifaximin, and additional travelers’ diarrhea antibiotic therapy will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for rifaximin are summarized in Table 2. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|
cyclosporine | adjunctive use markedly increases systemic rifaximin concentrations, as rifaximin is P-glycoprotein and OATP1B1/3 substrate, and cyclosporine is P-glycoprotein and OATP1B1/3 inhibitor | clinical significance of increased exposure unknown; observe for increased adverse effects if combined therapy necessary | 3-moderate (CP) |
eliglustat (Cerdelga®) | adjunctive use may increase systemic rifaximin concentrations, as rifaximin is P-glycoprotein substrate, and eliglustat is P-glycoprotein inhibitor | clinical significance of increased exposure unknown; observe for increased adverse effects if combined therapy necessary | 3-moderate (CP) |
warfarin | concurrent use may result in changes in INR levels due to an undetermined mechanism | monitor INR values and adjust warfarin doses as needed | 3-moderate (CP) |
Legend:
- #CP = Clinical Pharmacology
- INR = international normalized ratio
5. References
- Rifaximin (Xifaxan®) package insert. Salix Pharmaceuticals, October 2019.
- Shayto RH, Abou Mrad R, Sharara AI. Use of rifaximin in gastrointestinal and liver diseases. World J Gastroenterol. 2016; 22(29): 6638-51.
- DuPont HL, Ericsson CD, Mathewson JJ, et al. Rifaximin: a nonabsorbed antimicrobial in the therapy of travelers' diarrhea. Digestion. 1998;59:708-14.
- DuPont HL, Jiang ZD, Okhuysen PC, et al. A randomized, double-blind, placebo-controlled trial of rifaximin to prevent travelers' diarrhea. Ann Intern Med. 2005;142:805-12.
- DuPont HL, Jiang ZD, Ericsson CD, et al. Rifaximin versus ciprofloxacin for the treatment of travelers’ diarrhea: a randomized, double-blind clinical trial. Clin Infect Dis. 2001;33:1807-15.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc; 2020. Available at: http://www.clinicalpharmacology.com. Accessed June 23, 2020.
- Rifaximin (Drug Evaluation). IBM Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/ (cited: June 23, 2020).
- Lexicomp Inc., Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2022; Accessed June 3, 2022.
- Pakyz AL. Rifaximin: a new treatment for travelers’ diarrhea. Ann Pharmacother. 2005;39:284-9.
- DuPont HL. Travellers’ diarrhoea: contemporary approaches to therapy and prevention. Drugs. 2006;66:303-14.
- Okhuysen PC. Current concepts in travelers' diarrhea: epidemiology, antimicrobial resistance and treatment. Curr Opin Infect Dis. 2005;18:522-6.
- Layer P, Andresen V. Review article: rifaximin, a minimally absorbed oral antibacterial, for the treatment of travellers' diarrhoea. Aliment Pharmacol Ther. 2010;31(11):1155-64.
- Bass NM, Mullen KD, Sanyal A, et al. Rifaximin treatment in hepatic encephalopathy. N Engl J Med. 2010;362:1071-81.
- Pimentel M, Lembo A, Chey WD, et al. for the TARGET Study Group. Rifaximin therapy for patients with irritable bowel syndrome without constipation. N Engl J Med. 2011;364:22-32.
- Gionchetti P, Rizzello F, Ferrieri A, et al. Rifaximin in patients with moderate or severe ulcerative colitis refractory to steroid-treatment: a double-blind, placebo-controlled trial. Dig Dis Sci. 1999;44:1220-1.
- Prantera C, Lochs H, Campieri M, et al. Antibiotic treatment of Crohn’s disease: results of a multicentre, double blind, randomized, placebo-controlled trial with rifaximin. Aliment Pharmacol Ther. 2006;23:1117-25.
- Adachi JA, DuPont HL Rifaximin: a novel nonabsorbed rifamycin for gastrointestinal disorders. Clin Infect Dis. 2006;42:541-7.
- Taylor DN, McKenzie R, Durbin A, et al. Rifaximin, a nonabsorbed oral antibiotic, prevents shigellosis after experimental challenge. Clin Infect Dis. 2006;42:1283-8.
- Huang DB, DuPont HL. Rifaximin – a novel antimicrobial for enteric infections. J Infect. 2005;50(2):97-106.
- Taylor DN, Bourgeois AL, Ericsson CD, et al. A randomized, double-blind, multicenter study of rifaximin compared with placebo and with ciprofloxacin in the treatment of travelers’ diarrhea. Am J Trop Med Hyg. 2006;74:1060-6.
- Frisari L, Viggiano V, Pelagalli M. An open, controlled study of two non-absorbable antibiotics for the oral treatment of paediatric infectious diarrhea. Curr Med Res Opin. 1997;14:39-45.
- Vinci M, Gatto A, Giglio A, et al. Double-blind clinical trial on infectious diarrhea therapy: rifaximin versus placebo. Curr Ther Res. 1984;36:92-9.
- Paik YH, Lee KS, Han KH, et al. Comparison of rifaximin and lactulose for the treatment of hepatic encephalopathy: a prospective randomized study. Yonsei Med J. 2005;46:399-407.
- Mas A, Rodes J, Sunyer L, et al. Comparison of rifaximin and lactitol in the treatment of acute hepatic encephalopathy: results of a randomized, double-blind, double-dummy, controlled clinical trial. J Hepatol. 2003;38:51-8.
- Miglio F, Valpiani D, Rossellini SR, Ferrieri A. Rifaximin, a non-absorbable rifamycin, for the treatment of hepatic encephalopathy. A double-blind, randomized trial. Curr Med Res Opin. 1997;13:593-601.
- Phongsamran PV, Kim JW, Cupo Abbott J, Rosenblatt A. Pharmacotherapy for hepatic encephalopathy. Drugs. 2010;70(9):1131-48.
- Vlachogiannakos J, Viazis N, Vasianopoulou P, et al. Long-term administration of rifaximin improves the prognosis of patients with decompensated alcoholic cirrhosis. J Gastroenterol Hepatol. 2013;28:450-5.
- Hong KS, Kim JS. Rifaximin for the treatment of acute infectious diarrhea. Therap Adv Gastroenterol. 2011;4(4):227-235.
- Connor, A. Travelers’ diarrhea, Chapter 2, Yellow Book: Travelers’ Health. Centers for Disease Control and Prevention. 2020.
Sedative/Hypnotics
Sedative/Hypnotics - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Jan. 20, 2023
- Jan. 22, 2021
- May 2018
- May 2016
- March 2016
- Aug. 2014
- May 2014
- March 2014
- March 2012
- May 2010
- Nov. 2006
- Aug. 2006
- July 2006
- Dec. 2003
- Oct. 2002
- Nov. 2001
- Oct. 2000
- Dec. 1999
- Nov. 1998
- Nov. 1997
- Nov. 1996
- Initially developed
- Jan. 1995
1. Dosage
1.1. Adults
Maximum recommended daily doses for sedative/hypnotics in adults, including the elderly population, are summarized in Table 1. Prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/ Strength | Maximum Recommended Dosage: Less than or equal to 65 years | Maximum Recommended Dosage: Greater than 65 years |
---|---|---|---|
estazolam (generics) | 1 mg, 2 mg tablets | 2 mg | 2 mg* |
flurazepam (generics) | 15 mg, 30 mg capsules | 30 mg | 15 mg* |
temazepam (Restoril®, generics) | 7.5 mg, 15 mg, 22.5 mg, 30 mg capsules | 30 mg | 30 mg* |
triazolam (Halcion®, generics) | 0.125 mg, 0.25 mg tablets | 0.5 mg | 0.25 mg* |
quazepam (Doral®, generics) | 15 mg tablets | 15 mg | 15 mg* |
Legend:
- * In elderly patients (patients greater than 65 years of age), sedative/hypnotic dosages should be reduced, if possible, as these patients are more sensitive to sedative/hypnotic pharmacologic/adverse effects24.
Drug Name | Dosage Form/ Strength | Maximum Recommended Dosage: Less than or equal to 65 years | Maximum Recommended Dosage: Greater than 65 years |
---|---|---|---|
phenobarbital+ (generics) | 15 mg, 16.2 mg, 30 mg, 32.4 mg, 60 mg, 64.8 mg, 97.2 mg, 100 mg tablets; 20 mg/5 mL elixir | 400 mg | 400 mg* |
Legend:
- + No longer considered acceptable drug class to manage insomnia as safer agents (i.e., benzodiazepines, nonbarbiturates) are available25.
- * In elderly patients (patients greater than 65 years of age), sedative/hypnotic dosages should be reduced if possible, as these patients are more sensitive to sedative/hypnotic pharmacologic/adverse effects24.
Drug Name | Dosage Form/ Strength | Maximum Recommended Dosage: Less than or equal to 65 years | Maximum Recommended Dosage: Greater than 65 years |
---|---|---|---|
eszopiclone (Lunesta®, generics) | 1 mg, 2 mg, 3 mg tablets | 3 mg | 2 mg |
zaleplon (generics) | 5 mg, 10 mg capsules | 20 mg | 10 mg |
zolpidem immediate-release (IR) (Ambien®, generics) | 5 mg, 10 mg IR tablets | 10 mg | 5 mg |
zolpidem extended-release (ER) (Ambien CR®, generics) | 6.25 mg, 12.5 mg ER tablets | 12.5 mg | 6.25 mg |
zolpidem sublingual tablets (Edluar®) | 5 mg, 10 mg sublingual tablets | 10 mg | 5 mg |
zolpidem sublingual tablets (generics) | 1.75 mg, 3.5 mg sublingual tablets | 1.75 mg (women) 3.5 mg (men) |
1.75 mg |
zolpidem lingual spray (Zolpimist®) | 5 mg/ actuation | 10 mg | 5 mg |
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage: Less than or equal to 65 years | Maximum Recommended Dosage: Greater than 65 years |
---|---|---|---|
ramelteon (Rozerem®) | 8 mg tablets | 8 mg | 8 mg |
ramelteon (Rozerem®, generics) | 8 mg tablets | 8 mg | 8 mg |
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage: Less than or equal to 65 years | Maximum Recommended Dosage: Greater than 65 years |
---|---|---|---|
daridorexant (Quviviq®) | 25 mg, 50 mg | 50 mg | 50 mg |
lemborexant (Dayvigo®) | 5 mg, 10 mg tablets | 10 mg | 10 mg |
suvorexant (Belsomra®) | 5 mg, 10 mg 15 mg, 20 mg tablets | 20 mg | 20 mg |
Drug Name | Dosage Form/Strength | Maximum Recommended Dosage: Less than or equal to 65 years | Maximum Recommended Dosage: Greater than 65 years |
---|---|---|---|
doxepin (Silenor®, generics) | 3 mg, 6 mg tablets | 6 mg | 6 mg |
In the elderly, short- and intermediate-acting benzodiazepines (e.g., temazepam, triazolam) are preferred, as long-acting benzodiazepines (e.g., flurazepam) are associated with increased sedation and an increased risk of falls and fractures in this patient population.
The appropriate sedative/hypnotic dose for debilitated patients is the same as that prescribed in elderly patients for most sedative/hypnotic agents. However, estazolam 0.5 mg is used in small or debilitated geriatric patients, a dose lower than that recommended for elderly patients.
Doxepin is FDA-approved for use in managing insomnia characterized by difficulty in maintaining sleep. Studies have documented efficacy for up to 3 months in duration.
Patients with hepatic insufficiency have a reduced clearance of zolpidem. A 5 mg zolpidem immediate-release, sublingual (Edluar®), or oral spray (Zolpimist®) dose, a 1.75 mg sublingual tablet (Intermezzo®) dose, or a 6.25 mg extended-release dose is recommended in these patients.
Eszopiclone should be used cautiously in patients with severe hepatic impairment with initial doses of 1 mg daily at bedtime, as eszopiclone is significantly hepatically metabolized and serum concentrations may increase substantially in this patient population.
Suvorexant and lemborexant are newer sedative/hypnotics with a novel mechanism of action. Known as orexin receptor antagonists, suvorexant and lemborexant works by altering signaling of the orexin neurotransmitters in the brain. Orexins are responsible for regulating the sleep-wake cycle and helping to keep people awake. Suvorexant was FDA-approved in August 2014 as a schedule IV-controlled substance to manage insomnia associated with difficulties in sleep onset and/or sleep maintenance. Lemborexant was FDA-approved in December 2019 as a schedule IV-controlled substance for the treatment of insomnia characterized by difficulties with sleep onset and/ or sleep maintenance.
1.2. Pediatrics
Safety and efficacy of eszopiclone, ramelteon, zaleplon, zolpidem, daridorexant, lemborexant or suvorexant, as well as sedative/hypnotic benzodiazepines, have not been established in pediatric patients1-22. Barbiturates are no longer recommended for use in pediatric insomnia as safer, more effective agents are available.
2. Duration of Therapy
In adults, insomnia is classified based on symptom duration. Periods of sleep difficulty lasting from one to three nights are classified as situational insomnia, periods lasting less than three months are classified as short-term insomnia, while chronic or long-term insomnia represents sleep difficulties exceeding three months occurring at least three nights per week25-27.
Acute, situational insomnia is due to minor situational, familial, and/or occupational stress and is managed primarily by teaching patients to re-establish normal sleep-wake patterns.26 Short-term insomnia is precipitated by events such as divorce, job loss, health concerns, or prescription medications and may be managed by behavioral techniques, lifestyle changes, and, if necessary, short-term pharmacologic therapy27.
Long-term insomnia may be associated with medical or psychiatric illness (e.g., mood and anxiety disorders, asthma, chronic pain, and gastroesophageal reflux) as well as a variety of prescribed medications, although approximately 40% of patients may develop chronic insomnia due to psychophysiological characteristics27-28. Chronic insomnia with a psychophysiological component is characterized by a marked over concern about the inability to fall asleep29 . A definitive diagnosis of the specific cause for long-term insomnia is necessary before a treatment plan can be delineated27, 30. Sedative/hypnotics are generally reserved for use in those patients with insomnia in whom secondary causes of insomnia have been evaluated and managed or in whom sleep hygiene practices have failed.30 Chronic insomnia without underlying medical or psychiatric disease can be managed most effectively with a benzodiazepine or nonbenzodiazepine hypnotic used concurrently for a finite period with daily behavioral therapy31. Ideally, sedative/hypnotics are not routinely recommended for the management of chronic insomnia25, 29. However, in certain circumstances (e.g., severe, refractory insomnia, chronic comorbid illnesses), benzodiazepine and nonbenzodiazepine hypnotics may be administered in conjunction with non-pharmacologic behavioral therapy in the lowest effective dose several times per week for extended durations29. Hypnotics should typically be dosed intermittently once every two to three nights to avoid tolerance and dependence29 . Recently, though, eszopiclone and ramelteon have been approved for use in the long-term management of sleep onset and/or sleep maintenance insomnia, while zolpidem extended-release has been approved for use in managing insomnia for up to 24 weeks to treatment duration10,11,14,18,19.
Suvorexant, lemborexant, and daridorexant, the most recently approved medications for insomnia, are prescribed to help patients with sleep onset and sleep maintenance. These drugs may be prescribed on a nightly basis if patients can remain in bed for at least 7 hours before the scheduled waking time20-22.
Zolpidem immediate-release prescribed quantities should not exceed four to five weeks supply13. Barbiturates are indicated for short-term treatment of insomnia, as these agents appear to lose effectiveness in sleep induction and maintenance after 2 weeks8, 9.
Sedative/hypnotic treatment regimens lasting longer than four months in adult patients will be reviewed.
In pediatric patients, sedative/hypnotics are primarily used to alleviate anxiety and/or pain associated with painful or nonpainful but threatening procedures.
3. Duplicative Therapy
The concurrent use of two or more sedative/hypnotics is not recommended. Additional therapeutic benefit is not appreciated when several sedative/hypnotics are administered in combination. Patient profiles containing concurrent prescriptions for multiple sedative/hypnotics will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens that may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for sedative/hypnotics are summarized in Table 7. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level# |
---|---|---|---|---|
barbiturates (BARB) | anticoagulants | BARB induction of apixaban, rivaroxaban, and warfarin metabolic clearance (CYP3A4) with potential for decreased anticoagulant clinical effects | avoid combination, if possible; closely monitor international normalized ratio (INR) when BARB therapy added, discontinued, or changed to warfarin; addition of warfarin to chronic BARB regimen more tolerable | apixaban, rivaroxaban: major, warfarin: moderate (Micromedex) apixaban, rivaroxaban: 2-major, warfarin: 3-moderate (CP) |
barbiturates | cyclosporine | BARB induction of cyclosporine metabolic clearance (CYP3A4) with potential for reduced cyclosporine clinical effects | avoid concurrent therapy, if possible; if combination necessary, monitor for cyclosporine immunosuppressive efficacy; monitor cyclosporine serum concentrations when BARB therapy added, discontinued, or changed | Moderate (Micromedex), 2-major (CP) |
barbiturates | oral contraceptives (OC) | BARB induction of estrogen/ progestin hepatic metabolic clearance with potential for decreased OC clinical effects and risk of contraceptive failure | OCs with higher ethinyl estradiol dosages (e.g., 50 mcg) to increase contraceptive efficacy may be necessary; second contraceptive method recommended to prevent unwanted pregnancy | Major (Micromedex), 3-moderate (CP) |
barbiturates | voriconazole | BARB induction, especially long-acting BARBs (phenobarbital), of voriconazole metabolic clearance (CYP3A4) with potential for decreased voriconazole clinical effects | voriconazole contraindicated for use with long-acting BARBs; use cautiously with short-acting BARBs and monitor clinical effects | contraindicated (DrugReax), 1-contraindicated (CP) |
daridorexant | strong CYP3A4 inhibitors (e.g., ketoconazole, protease inhibitors, macrolides) | potential for increased daridorexant plasma concentrations and enhanced pharmacologic/ adverse effects | Concurrent administration is not recommended | major (Micromedex), 2-major (CP) |
daridorexant | moderate CYP3A4 inhibitors (e.g., ketoconazole, protease inhibitors, macrolides) | potential for increased daridorexant plasma concentrations and enhanced pharmacologic/adverse effects | if used concomitantly, the dose of daridorexant should not exceed 25 mg once per night | major (Micromedex), 2-major (CP) |
daridorexant | CYP3A4 inducers (e.g., rifampin, phenytoin, carbamazepine) | potential for decreased daridorexant exposure and risk of reduced efficacy | avoid concurrent therapy, if possible | major (Micromedex), 2-major (CP) |
doxepin | drugs metabolized by CYP2D6 (e.g., phenothiazines, delavirdine) | potential for increased doxepin serum levels and enhanced pharmacologic/ adverse effects due to competition for CYP2D6 metabolic pathway | concurrent administration is not recommended; monitor patients for enhanced doxepin effects; adjust doses as necessary | Major (Micromedex), 2-major (CP) |
eszopiclone | CYP3A4 inducers (e.g., rifampin, phenytoin, carbamazepine) | induction of eszopiclone metabolic clearance (CYP3A4) with potential for decreased eszopiclone clinical effects | monitor patients for decreased eszopiclone efficacy; consider hypnotic agent not metabolized by CYP3A4 | 3-moderate (CP) |
eszopiclone | CYP3A4 inhibitors (e.g., ketoconazole, protease inhibitors, macrolides) | potential for increased eszopiclone serum concentrations and enhanced pharmacologic/adverse effects | monitor patients for enhanced eszopiclone effects; adjust doses as necessary | Major (Micromedex), 3-moderate (CP) |
lemborexant | CYP3A inducers | potential for decreased lemborexant exposure and risk of reduced efficacy | monitor patients for decreased efficacy; consider alternate therapy if possible | Major (Micromedex), 2- major (CP) |
oxidatively metabolized benzodiazepines (BZDs) (e.g., estazolam, triazolam) | imidazole antifungals (e.g., itraconazole, ketoconazole) | potential for increased serum concentrations and enhanced pharmacologic/ adverse effects in oxidatively metabolized BZDs (metabolized by CYP3A4) as imidazole antifungals inhibit CYP3A4 | adjunctive therapy with imidazole antifungals and oxidatively metabolized BZD contraindicated; BZD metabolized by glucuronidation (e.g., temazepam) may be acceptable alternative | contraindicated (DrugReax), 2-major, 3-moderate (CP) |
oxidatively metabolized BZDs (e.g., estazolam, triazolam) | macrolides | potential for increased serum concentrations and enhanced pharmacologic/ adverse effects in oxidatively metabolized BZDs (metabolized by CYP3A4) as macrolides inhibit CYP3A4 | adjunctive therapy with macrolides and oxidatively metabolized BZD not recommended; BZD metabolized by glucuronidation (e.g., temazepam) may be acceptable alternative; azithromycin may be macrolide alternative (not metabolized by CYP3A4) | major (Micromedex), triazolam: 1-contraindicated; estazolam: 3-moderate (CP) |
oxidatively metabolized benzodiazepines (e.g., estazolam, triazolam) | nefazodone | potential for increased serum concentrations and enhanced pharmacologic/ adverse effects (e.g., prolonged sedation, excessive hypnotic effects) in oxidatively metabolized BZDs (metabolized by CYP3A4) as nefazodone potently inhibits CYP3A4 | adjunctive therapy with nefazodone and oxidatively metabolized BZD contraindicated; BZD metabolized by glucuronidation (e.g., temazepam) may be acceptable alternative; monitor for signs of BZD intoxication and adjust doses if needed | contraindicated (triazolam), moderate (estazolam) (Micromedex), 1-contraindicated (triazolam), 3-moderate (estazolam) (CP) |
oxidatively metabolized BZDs (e.g., estazolam, triazolam) | non-nucleotide reverse transcriptase (NNRT) inhibitors | potential for altered serum concentrations and pharmacologic effects in oxidatively metabolized BZDs (metabolized by CYP3A4); delavirdine, efavirenz inhibit CYP3A4 and magnify oxidative BZD pharmacologic/ adverse effects, while nevirapine induces oxidative BZD metabolism and diminishes pharmacologic effects | adjunctive therapy with NNRT inhibitors and oxidatively metabolized BZD contraindicated; BZD metabolized by glucuronidation (e.g., temazepam) may be acceptable alternative | contraindicated (DrugReax), 1-contraindicated, 3-moderate (CP) |
oxidatively metabolized BZDs (e.g., estazolam, triazolam) | protease inhibitors | potential for increased serum concentrations and enhanced pharmacologic/ adverse effects (e.g., severe sedation, respiratory depression) in oxidatively metabolized BZDs (metabolized by CYP3A4) as protease inhibitors inhibit CYP3A4 | adjunctive therapy with protease inhibitors and oxidatively metabolized BZD contraindicated; BZD metabolized by glucuronidation (e.g., temazepam) may be acceptable alternative | triazolam: contraindicated, estazolam: moderate (Micromedex), triazolam: 1-contraindicated, estazolam: 3-moderate (CP) |
oxidatively metabolized BZDs (e.g., estazolam, triazolam) | triazole antifungals (e.g., fluconazole, voriconazole) | potential for increased serum concentrations and enhanced pharmacologic/ adverse effects in oxidatively metabolized BZDs (metabolized by CYP3A4) as triazole antifungals inhibit CYP3A4 | adjunctive therapy with triazole antifungals and oxidatively metabolized BZD not recommended; BZD metabolized by glucuronidation (e.g., temazepam) may be acceptable alternative | major (DrugReax), 3-moderate (CP) |
ramelteon | antifungal agents (triazoles or imidazoles) | potential for increased ramelteon serum concentrations and increased clinical/adverse effects due to CYP2C9 inhibition by triazole antifungals (e.g., fluconazole, voriconazole) or CYP3A4 inhibition by imidazole antifungals (e.g., itraconazole, ketoconazole) | cautiously administer therapy concurrently; monitor for enhanced ramelteon pharmacologic/adverse effects | moderate (DrugReax), 3-moderate (CP) |
ramelteon | fluvoxamine | fluvoxamine inhibition of ramelteon metabolism (CYP1A2) and potential for increased ramelteon serum concentrations and increased clinical/adverse effects | avoid concurrent administration; other selective serotonin reuptake inhibitors (e.g., citalopram, fluoxetine) may be safer alternatives to fluvoxamine | contraindicated (DrugReax), 1-contraindicated (CP) |
ramelteon | strong CYP1A2 inducers (e.g., rifampin, rifabutin) | induction of ramelteon metabolic clearance (CYP1A2) with potential for decreased ramelteon clinical effects | monitor for decreased ramelteon effectiveness | minor (DrugReax), 3-moderate (CP) |
sedative/hypnotics | sodium oxybate (Xyrem®) | adjunctive administration may result in additive central nervous system (CNS) depression | concurrent administration contraindicated | Contraindicated, major (Micromedex) 1-contraindicated (CP) |
suvorexant | CNS depressants | adjunctive administration may result in additive CNS depression, cognitive/ behavioral changes, and complex sleep behaviors | combined administration not recommended; if necessary, monitor for residual CNS depressant effects | major (DrugReax), 3-moderate (CP) |
suvorexant | strong CYP3A4 inhibitors (e.g., ketoconazole, ritonavir, clarithromycin) | potential for increased suvorexant serum levels and increased pharmacologic/ adverse effects and toxicity as suvorexant is CYP3A4 substrate | combined administration not recommended | major (Micromedex), 2-major (CP) |
suvorexant | moderate CYP3A4 inhibitors (e.g., fluconazole, aprepitant, ciprofloxacin) | potential for increased suvorexant serum levels and increased pharmacologic/ adverse effects as suvorexant is CYP3A4 substrate | administer together cautiously, observing for increased adverse effects; suvorexant dose should be reduced to 5 mg/day, but may be increased to maximum of 10 mg/day to maintain efficacy | moderate (DrugReax), 2-major (CP) |
suvorexant | CYP3A4 inducers (e.g., carbamazepine, rifampin) | combined administration may result in reduced suvorexant serum levels and decreased efficacy as suvorexant is CYP3A4 substrate | monitor for decreased suvorexant efficacy and adjust dosages as needed | 3-moderate (CP) |
TCAs (e.g., doxepin) | monoamine oxidase inhibitors (MAOIs) | increased risk of serotonin syndrome (e.g., mental status changes, hyperpyrexia, restless, shivering) due to serotonin metabolism inhibition by monoamine oxidase | allow 14 days after MAOI discontinuation before initiating other antidepressant therapy; wait 5 weeks after discontinuing fluoxetine before initiating MAOIs | major (Micromedex), 1-contraindicated (CP) |
TCAs (e.g., doxepin) | drugs other than MAOIs with serotonergic activity (e.g., tramadol, sumatriptan, nefazodone, trazodone) | increased risk of serotonin syndrome (e.g., mental status changes, hyperpyrexia, restless, shivering, hypertonia, tremor) due to additive serotonergic effects | use cautiously together; if adjunctive administration necessary, monitor for signs and symptoms of serotonin syndrome | major (DrugReax), 2-major, 3-moderate (CP) |
TCAs (e.g., doxepin) | drugs that prolong QT interval | increased risk of somnolence, bradycardia, and serious cardiotoxicity (QT prolongation, Torsades de pointes) due to potential additive effects on QT interval | avoid concurrent use; if adjunctive use necessary, monitor for increased pharmacologic/toxic effects; adjust dose as necessary | contraindicated, major (Micromedex), 1-contraindicated, 2-major (CP) |
zolpidem | CYP3A4 inhibitors (e.g., ketoconazole, protease inhibitors) | potential for increased zolpidem serum concentrations and enhanced pharmacologic/ adverse effects (e.g., severe sedation, respiratory depression) with concurrent administration of CYP3A4 inhibitors, as zolpidem is metabolized by CYP3A4 | monitor patients for enhanced zolpidem effects; adjust doses as necessary | major (Micromedex), 3-moderate (CP) |
zolpidem | CYP3A4 inducers (e.g., carbamazepine, rifampin) | induction of zolpidem metabolic clearance (CYP3A4) with potential for decreased zolpidem clinical effects | monitor for decreased zolpidem effectiveness | moderate (DrugReax), 2-major (CP) |
Legend:
- # Clinical Pharmacology
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc; 2022. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu. Accessed December 8, 2022.
- IBM Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/ (cited: December 8, 2022).
- Estazolam oral tablets package insert. Mayne Pharma, September 2022.
- Flurazepam oral capsules package insert. Mylan Pharmaceuticals Inc., February 2021.
- Temazepam (Restoril®) oral capsules package insert. SpecGx LLC, February 2021.
- Triazolam (Halcion®) oral tablets package insert. Pharmacia & Upjohn Company LLC, October 2021.
- Quazepam (Doral®) oral tablets package insert. Galt Pharmaceuticals, LLC, January 2021.
- Phenobarbital oral tablets package insert. e5 Pharma LLC, November 2022.
- Phenobarbital oral elixir package insert. e5 Pharma LLC, November 2022.
- Eszopiclone (Lunesta®) oral tablets package insert. Sunovion Pharmaceuticals Inc., August 2019.
- Eszopiclone oral tablets package insert. Aurobindo Pharma Limited, December 2021.
- Zaleplon oral capsules package insert. Aurobindo Pharma Limited, December 2021.
- Zolpidem immediate-release (Ambien ®) oral tablets package insert. Sanofi Aventis U.S., February 2022.
- Zolpidem extended-release (Ambien CR®) package insert. Sanofi Aventis U.S., February 2022.
- Zolpidem sublingual tablets (Edluar®) package insert. Meda Pharmaceuticals, August 2022.
- Zolpidem sublingual tablets package insert. Par Pharmaceutical Inc., October 2019.
- Zolpidem oral spray (Zolpimist®) package insert. Aytu BioPharma Inc., August 2019.
- Ramelteon oral tablets (Rozerem®) package insert. Takeda Pharmaceuticals America Inc., November 2021.
- Ramelteon oral tablets package insert. Actavis Pharma Inc., March 2022.
- Daridorexant oral tablets (Quviviq®) package insert. Idorsia Pharmaceuticals US Inc., April 2022.
- Lemborexant oral tablets (Dayvigo®) package insert. Eisai Inc., June 2022.
- Suvorexant oral tablets (Belsomra®) package insert. Merck & Co., Inc., May 2022.
- Doxepin oral tablets (Silenor®) package insert. Currax Pharmaceuticals LLC, October 2020.
- By the 2019 American Geriatrics Society Beers Criteria® Update Expert Panel. American Geriatrics Society 2019 Updated AGS Beers Criteria® for Potentially Inappropriate Medication Use in Older Adults. J Am Geriatr Soc. 2019;67(4):674-694. doi:10.1111/jgs.15767
- Sateia MJ, Buysse DJ, Krystal AD, Neubauer DN, Heald JL. Clinical Practice Guideline for the Pharmacologic Treatment of Chronic Insomnia in Adults: An American Academy of Sleep Medicine Clinical Practice Guideline. J Clin Sleep Med. 2017;13(2):307-349. Published 2017 Feb 15. doi:10.5664/jcsm.6470
- American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders. Fifth Edition. American Psychiatric Association; 2013.
- Dopp JM, Phillips BG. Chapter 92. Sleep disorders (Chapter). In: DiPiro JT, Yee GC, Posey M, et al. Pharmacotherapy: a pathophysiologic approach. 12th ed. New York, McGraw-Hill, 2020. Access Pharmacy Web site. Available at: https://accesspharmacy-mhmedical-com.ezproxy.lib.utexas.edu. Accessed December 8, 2022.
- Dopheide JA. Insomnia overview: epidemiology, pathophysiology, diagnosis and monitoring, and nonpharmacologic therapy. Am J Manag Care. 2020;26(4 Suppl):S76-S84. doi:10.37765/ajmc.2020.42769
- Schutte-Rodin S, Broch L, Buysse D, Dorsey C, Sateia M. Clinical guideline for the evaluation and management of chronic insomnia in adults. J Clin Sleep Med. 2008;4(5):487-504.
- Sutton EL. Insomnia. Ann Intern Med. 2021;174(3):ITC33-ITC48. doi:10.7326/AITC202103160
- Kaur H, Spurling BC, Bollu PC. Chronic Insomnia. In: StatPearls. Treasure Island (FL): StatPearls Publishing; July 12, 2022.
Serotonin 5-HT1B/1D Receptor Agonists
Serotonin 5-HT1B/1D Receptor Agonists - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Jan. 20, 2023
- Jan. 22, 2021
- Dec. 2018
- Dec. 2016
- Dec. 2014
- March 2013
- April 2011
- Oct. 2008
- May 2007
- Dec. 2006
- Aug. 2003
- July 2002
- Nov. 2001
- Sept. 2001
- Aug. 2000
- Oct. 1999
- Initially developed
- Aug. 1998
1. Dosage
1.1. Adults
Serotonin 5-HT1B/1D receptor agonists (SRAs) are FDA-approved to manage acute migraine headache attacks with or without aura. Injectable sumatriptan is also FDA-approved to manage cluster headache episodes. The maximum recommended adult doses for available SRAs are summarized in Tables 1 and 2. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
almotriptan (generic) | tablets (6.25 mg, 12.5 mg) | migraine with or without aura | 25 mg/day |
eletriptan (Relpax®, generic) | tablets (20 mg, 40 mg) | migraine with or without aura | 80 mg/day |
frovatriptan (Frova®, generic) | tablets (2.5 mg) | migraine with or without aura | 7.5 mg/day |
naratriptan (Amerge®, generic) | tablets (1 mg, 2.5 mg) | migraine with or without aura | 5 mg/day |
rizatriptan (Maxalt®, generic) | tablets (5 mg, 10 mg) | migraine with or without aura | 30 mg/day |
rizatriptan (Maxalt -MLT®, generic) | orally disintegrating tablets (5 mg, 10 mg) | migraine with or without aura | 30 mg/day |
rizatriptan propranolol patients | migraine with or without aura | 15 mg/day | |
sumatriptan (Imitrex®, generic) | intranasal spray (5mg/spray, 20 mg/spray - 6 per package) | migraine with or without aura | 40 mg/day |
sumatriptan (Onzetra Xsail®) | intranasal powder (11 mg/actuation) | migraine with or without aura | 44 mg/day* |
sumatriptan (Imitrex®, generic) | oral tablets (25 mg, 50 mg, 100 mg) | migraine with or without aura | 200 mg/day |
sumatriptan (Imitrex®, generic) | subcutaneous injection (4 mg and 6 mg STATdose system, 6 mg/0.5 mL single dose vial) | migraine with or without aura | 12 mg/day |
cluster headache | 12 mg/day | ||
sumatriptan (Tosymra®) | Intranasal spray (10 mg/ spray - 6 per package) | migraine with or without aura | 30 mg/day |
sumatriptan (Zembrace® SymTouch®) | 3 mg/0.5 mL auto injector | migraine with or without aura | 12 mg/day |
zolmitriptan (Zomig®, generic) | tablets (2.5 mg, 5 mg) | migraine with or without aura | 10 mg/day |
zolmitriptan (Zomig-ZMT®, generic) | orally disintegrating tablets (2.5 mg, 5 mg) | migraine with or without aura | 10 mg/day |
zolmitriptan (Zomig®) | intranasal (2.5 mg/ actuation, 5 mg/ actuation) | migraine with or without aura | 10 mg/day |
Legend:
- * Alternatively, patients may receive a maximum Onzetra Xsail® dose of 22 mg plus one dose of another sumatriptan product at least 2 hours later
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
sumatriptan/naproxen (Treximet®, generics) | migraine with or without aura | tablets (85 mg/500 mg) | 170 mg/1000 mg per day |
1.2. Pediatrics
Rizatriptan is the only SRA FDA approved in children 6 to 17 years of age to treat acute migraine attacks in patients with a history of migraine with or without aura1,2,7. Almotriptan, zolmitriptan nasal spray, and sumatriptan/naproxen are FDA approved for patients 12 years of age and older1-3,16,17. Children/adolescents 6 to 17 years of age prescribed propranolol weighing less than 40 kg should not receive rizatriptan concurrently.7 Maximum recommended pediatric doses for SRAs are summarized in Tables 3 and 4. Dosages exceeding these recommendations will be reviewed.
Drug | Patient Characteristics | Maximum Daily Dosage |
---|---|---|
almotriptan | 12 to 17 years of age | 25 mg |
rizatriptan | 6 to 17 years of age: Less than 40 kg Greater than or equal to 40 kg |
5 mg 10 mg |
rizatriptan propranolol patients | 6 to 17 years of age: Greater than equal to 40 kg | 5 mg |
zolmitriptan nasal spray | 12 to 17 years of age | 10 mg |
Drug | Patient Characteristics | Maximum Daily Dosage |
---|---|---|
sumatriptan/naproxen | 12 to 17 years of age | 85 mg/500 mg |
The remaining SRAs are not FDA-approved for use in patients less than 18 years of age as safety and efficacy have not been established in this patient population. Additionally, patients less than 18 years of age have demonstrated a significant placebo response following SRA use as well as an adverse event profile, including serious adverse events, comparable to that seen in adults4,9,10,18.
No significant data are available evaluating SRA use in pediatric patients younger than 6 years of age. In limited randomized, controlled trials, sumatriptan nasal spray has demonstrated some efficacy in mitigating migraine attacks in adolescents; children as young as 6 years of age have achieved favorable responses with intranasal sumatriptan in a few small randomized and open-label studies.19-21 However, oral sumatriptan tablets used in children 8 to 16 years of age to treat acute migraine attacks were not significantly better than placebo.22 A few small studies with oral zolmitriptan have shown mixed outcomes.23,24 Although not FDA-approved, Table 5 summarizes SRA doses that have been utilized in the pediatric population. Due to lack of definitive efficacy, prescriptions for SRAs not FDA-approved for pediatric patients will be reviewed in patients 6 to 18 years of age.
Drug | Patient Characteristics | Dose Utilized Per Headache |
---|---|---|
sumatriptan intranasal spray | 6 to 17 years of age | 20 mg |
sumatriptan subcutaneous | 6 to 18 years of age | 0.06 mg/kg |
sumatriptan subcutaneous | sumatriptan subcutaneous 6 to 16 years of ageLess than 30 kg Greater than or equal to 30 kg |
3 mg 6 mg |
zolmitriptan tablets | 6 to 18 years of age | 2.5 mg |
2. Duration of Therapy
Migraine headache is a chronic, recurrent condition usually requiring long-term, intermittent therapy for pain relief. Serotonin 5-HT1B/1D receptor agonists are approved for acute treatment of migraine attacks and may be utilized indefinitely to manage migraine headaches provided that the maximum dosage recommendation is not exceeded in a 24-hour period. Additionally, the safety of treating more than 3 or 4 headaches during a 30-day period has not been established with the exception of sumatriptan/naproxen which has been FDA approved for 5 migraine headaches during a 30-day period1-17. Children/ adolescents 6 to 17 years of age are allowed only one rizatriptan dose per 24 hours, as safety and efficacy have not been determined for multiple rizatriptan doses in pediatric patients7. Maximum quantities of serotonin 5-HT1B/1D receptor agonists to be dispensed in a 30-day time period, based on number of headaches to be treated, are summarized in Tables 6 and 7 for adults and Tables 8 and 9 for adolescents. Patient profiles documenting quantities of serotonin 5-HT1B/1D receptor agonists that exceed these recommendations will be reviewed.
Drug | Maximum Number of Headaches Treated per 30 Days | Recommended Prescribed Tablet Number/Sprays or Dose per 30 Days |
---|---|---|
almotriptan tablets | 4 headaches | 8 x 12.5 mg tablets or 100 mg |
eletriptan tablets | 3 headaches | 6 x 40 mg tablets or 240 mg |
frovatriptan tablets | 4 headaches | 12 x 2.5 mg tablets or 30 mg |
naratriptan tablets | 4 headaches | 8 x 2.5 mg tablets or 20 mg |
rizatriptan tablets | 4 headaches | 12 x 10 mg tablets or 120 mg |
rizatriptan orally disintegrating tablets (ODTs) | 4 headaches | 12 x 10 mg ODT or 120 mg |
rizatriptan propranolol patients (regular or ODT) | 4 headaches | 12 x 5 mg tablets/ODT or 60 mg |
sumatriptan intranasal spray (Imitrex®, generic) | 4 headaches | 8 x 20 mg spray or 160 mg |
sumatriptan intranasal spray (Tosymra®) | 4 headaches | 12 x 10 mg spray or 120 mg |
sumatriptan intranasal powder | 4 headaches | 8 x 22 mg powder or 176 mg |
sumatriptan oral tablets | 4 headaches | 8 x 100 mg tablets or 800 mg |
sumatriptan subcutaneous injection | ----+ | ---- |
zolmitriptan intranasal | 4 headaches | 8 x 5 mg spray or 40 mg |
zolmitriptan tablets | 3 headaches | 6 x 5 mg tablets or 30 mg |
zolmitriptan orally disintegrating tablets | 3 headaches | 6 x 5 mg tablets or 30 mg |
Legend:
- + Patients taking Imitrex® should not receive more than 2 subcutaneous injections in a 24-hour time period; patients taking Zembrace® should not receive more than 4 subcutaneous injections per day
Drug | Maximum Number of Headaches Treated per 30 Days | Recommended Prescribed Tablet Number/Sprays or Dose per 30 Days |
---|---|---|
sumatriptan/naproxen tablets | 5 headaches | 10 x 85/500 mg tablets or 850 mg/5000 mg |
Drug | Maximum Number of Headaches Treated per 30 Days | Recommended Prescribed Tablet Number/Sprays or Dose per 30 Days |
---|---|---|
almotriptan tablets | 4 headaches | 8 x 12.5 mg tablets or 100 mg |
rizatriptan tablets | Less than 40 kg: 4 headaches Greater than or equal to 40 kg: 4 headaches |
4 x 5 mg tablets or 20 mg 4 x 10 mg tablets or 40 mg |
rizatriptan orally disintegrating tablets (ODTs) | Less than 40 kg: 4 headaches Greater than or equal to 40 kg: 4 headaches |
4 x 5 mg tablets or 20 mg 4 x 10 mg tablets or 40 mg |
rizatriptan propranolol patients (regular or ODT) | 4 headaches | 4 x 5 mg tablets or 20 mg |
zolmitriptan nasal spray | 4 headaches | 8 x 5 mg/actuation or 40 mg |
Drug | Maximum Number of Headaches Treated per 30 Days | Recommended Prescribed Tablet Number/Sprays or Dose per 30 Days |
---|---|---|
sumatriptan/naproxen tablets | 2 headaches | 2 x 85 mg /500 mg tablets or 170 mg/1000 mg |
3. Duplicative Therapy
Using two or more serotonin 5-HT1B/1D receptor agonists concurrently is not justified due to lack of additional therapeutic benefit and the potential for additive vasospastic effects. Patient profiles documenting receipt of multiple serotonin 5-HT1B/1D receptor agonists will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be reviewed to identify drug regimens that may result in clinically significant drug-drug interactions. Clinically relevant drug-drug interactions for serotonin 5-HT1B/1D receptor agonists are summarized in Tables 10 and 11. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Triptan | Amphetamines | CYP3A4 inhibitors | Ergots | Linezolid | MAOIs+ | Propranolol | SNRIs#/SSRIs* |
---|---|---|---|---|---|---|---|
almotriptan | √ | √ | √ | √ | √ | ---- | √ |
eletriptan | √ | √ | √ | √ | √ | ---- | √ |
frovatriptan | √ | ---- | √ | √ | √ | ns | √ |
naratriptan | √ | ---- | √ | √ | √ | ---- | √ |
rizatriptan | √ | ---- | √ | √ | √ | √ | √ |
sumatriptan | √ | ---- | √ | √ | √ | ---- | √ |
zolmitriptan | √ | ---- | √ | √ | √ | ns | √ |
Legend:
- ns = not significant
- +MAOIs = monoamine oxidase inhibitors
- #SNRIs = serotonin-norepinephrine reuptake inhibitors
- *SSRIs = selective serotonin reuptake inhibitors
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level# |
---|---|---|---|---|
SRAs | amphetamines | concurrent administration may stimulate serotonin neurotransmission and increase risk of serotonin syndrome (e.g., mental status changes, diaphoresis, tremor, fever), as amphetamines increase serotonin release | avoid combination, if possible; if adjunctive therapy necessary, initiate with lower doses and observe for signs/symptoms of serotonin syndrome and adjust therapy as indicated | major (Micromedex), 3-moderate (CP) |
almotriptan, eletriptan | CYP3A4 inhibitors (e.g., azole antifungals, macrolides) | adjunctive administration of CYP3A4 inhibitors with almotriptan or eletriptan (CYP3A4 substrates) may result in increased almotriptan/eletriptan serum levels and enhanced pharmacologic/toxic effects, including potential for vasospastic and/or cardiac events | eletriptan contraindicated for use within 72 hours of strong CYP3A4 inhibitor; lower almotriptan dosages required when used concurrently with CYP3A4 inhibitors (maximum dose, 12.5 mg); an alternative antifungal that does not inhibit CYP3A4 (e.g., terbinafine) may be an alternative for azoles | contraindicated, moderate (DrugReax), 1-contraindicated, 2-major (CP) |
SRAs | ergot derivatives/ergot-type medications (e.g., bromocriptine) | combined administration may result in additive vasospastic effects | SRAs should not be used within 24 hours of ergot derivatives/ergot-type medications | contraindicated (DrugReax), 1-contraindicated (CP) |
SRAs | linezolid | concurrent administration with SRAs metabolized by monoamine oxidase (MAO) may increase serotonin levels and the potential for serotonin syndrome, as linezolid is nonselective monoamine oxidase inhibitor (MAOI) | adjunctive administration or administration within 14 days of MAOI discontinuation is contraindicated by SRA manufacturers; if combination necessary, observe patient closely for signs/symptoms of serotonin syndrome; eletriptan is not metabolized by MAO, and frovatriptan, naratriptan do not inhibit MAO - may be safe alternatives; almotriptan is metabolized by MAO but does not require dosage adjustments when used with MAOIs - may also be alternative | contraindicated (DrugReax), 2-major (CP) |
SRAs | MAOIs+, including selegiline (high doses) | adjunctive administration of SRAs with other medications having serotonergic properties like MAOIs, which decrease serotonin metabolism, may increase serotonin levels and the potential for serotonin syndrome; selegiline in doses greater than 10 mg daily may behave like an MAOI | adjunctive administration or administration within 14 days of MAOI discontinuation is contraindicated by SRA manufacturers; if combination necessary, observe patient closely for signs/symptoms of serotonin syndrome; eletriptan is not metabolized by MAO, and frovatriptan, naratriptan do not inhibit MAO - may be safe alternatives; almotriptan is metabolized by MAO but does not require dosage adjustments when used with MAOIs and may also be alternative | Contraindicated, major (Micromedex) 3-moderate (CP) |
rizatriptan | propranolol | adjunctive rizatriptan-propranolol administration increases the rizatriptan AUC by as much as 70% as propranolol inhibits rizatriptan metabolism | reduce rizatriptan doses (maximum daily dose, 15 mg); observe patients for enhanced rizatriptan pharmacologic/adverse effects when co-administered | moderate (DrugReax), 3-moderate (CP) |
SRAs | SNRIs*/ SSRIs# | adjunctive administration of SRAs with other medications having serotonergic properties like SNRIs/SSRIs may increase serotonin levels and the potential for serotonin syndrome | avoid combination, if possible; if combined therapy necessary, monitor patient closely for signs/symptoms of serotonin syndrome and modify drug therapy as necessary | major (DrugReax) 3-moderate (CP) |
Legend:
- # CP = Clinical Pharmacology
- + MAOIs = monoamine oxidase inhibitors
- # SNRIs = serotonin-norepinephrine reuptake inhibitors
- * SSRIs = selective serotonin reuptake inhibitors
- ^ SRAs = serotonin 5-HT1B/1D receptor agonists
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed November 21, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed November 21, 2022.
- Almotriptan (Axert®) package insert. Ajanta Pharma Limited, November 2021.
- Eletriptan (Relpax®) package insert. Ajanta Pharma Limited, November 2021.
- Frovatriptan (Frova®) package insert. Ingenus Pharmaceuticals, May 2022.
- Naratriptan (Amerge®) package insert. GlaxoSmithKline, October 2020.
- Rizatriptan (Maxalt® and Maxalt-MLT®) package insert. Breckenridge Pharmaceutical, Inc. August 2022.
- Sumatriptan tablets (Imitrex®) package insert. GlaxoSmithKline, December 2020.
- Sumatriptan injection (Imitrex®) package insert. GlaxoSmithKline, December 2021.
- Sumatriptan nasal spray (Imitrex®) package insert. Lannett Company, January 2022.
- Sumatriptan nasal powder (Onzetra® Xsail®) package insert. Currax Pharmaceuticals, February 2021.
- Sumatriptan nasal spray (Tosymra®) package insert. Upsher-Smith Laboratories, February 2021.
- Sumatriptan succinate injection (Zembrace® SymTouch®) package insert. Upsher-Smith Laboratories, February 2021.
- Zolmitriptan tablets (Zomig®) package insert. Ajanta Pharma, November 2021.
- Zolmitriptan orally disintegrating tablets (Zomig-ZMT®) package insert. Glenmark Pharmaceuticals, September 2022.
- Zolmitriptan nasal spray (Zomig®) package insert. Padagis Israel Pharmaceuticals, October 2021.
- Sumatriptan/naproxen tablets (Treximet®) Package Insert. Aurobindo Pharma, May 2021.
- Winner P, Linder SL, Lipton RB, et al. Eletriptan for the acute treatment of migraine in adolescents: results of a double-blind, placebo-controlled trial. Headache. 2007;47(4):511-8.
- Ahonen K, Hamalainen ML, Rantala H, Hoppu K. Nasal sumatriptan is effective in treatment of migraine attacks in children: a randomized trial. Neurology. 2004;62:883-7.
- Winner P, Rothner AD, Saper J, et al. A randomized, double-blind, placebo-controlled study of sumatriptan nasal spray in the treatment of acute migraine in adolescents. Pediatrics. 2000;106:989-97.
- Ueberall MA, Wenzel D. Intranasal sumatriptan for the acute treatment of migraine in children. Neurology. 1999;52:507-10.
- Hamalainen ML, Hoppu K, Santavuori P. Sumatriptan for migraine attacks in children: a randomized placebo-controlled study. Do children with migraine respond to oral sumatriptan differently from adults? Neurology. 1997;48(4):1100-3.
- Evers S, Rahmann A, Kraemer C, et al. Treatment of childhood migraine attacks with oral zolmitriptan and ibuprofen. Neurology. 2006;67:497-9.
- Rothner AD, Wasiewski W, Winner P, et al. Zolmitriptan oral tablet in migraine treatment: high placebo responses in adolescents. Headache. 2006;46:101-9.
- Winner P, Rothner AD, Wooten JD, et al. Sumatriptan nasal spray in adolescent migraineurs: a randomized, double-blind, placebo-controlled, acute study. Headache. 2006;46:212-22.
- Linder SL. Subcutaneous sumatriptan in the clinical setting: the first 50 consecutive patients with acute migraine in a pediatric neurology office practice. Headache. 1996;36(7):419-422. doi:10.1046/j.1526-4610.1996.3607419.x
- MacDonald JT. Treatment of juvenile migraine with subcutaneous sumatriptan. Headache. 1994;34(10):581-582. doi:10.1111/j.1526-4610.1994.hed3410581.
Serotonin 5-HT3 Receptor Antagonists for Nausea and Vomiting (oral)
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- October 20, 2022; September 2020; July 2018; September 2016; June 2015; October 2013; November 2011; September 2011; October 2009; December 2005; August 2003; July 2002; July 2001; August 2000; August 1999; July 1998; July 1997.
- Initially developed
- Sept. 1996
1. Dosage
1.1. Adults
Serotonin 5-HT3 receptor antagonists are FDA-approved for the prevention of chemotherapy-induced nausea and vomiting (CINV), radiotherapy-induced nausea and vomiting (RINV), and post-operative nausea and vomiting (PONV)1, 2. Although not FDA-approved, these agents have also been utilized in the treatment of opioid-induced nausea, nausea and vomiting of pregnancy (hyperemesis gravidarum), and acute pediatric gastroenteritis1, 2. The American Society of Clinical Oncology (ASCO) antiemetic guidelines recommend the use of 5-HT3 receptor antagonists in conjunction with dexamethasone, a neurokinin 1 (NK1) receptor antagonist, and olanzapine to manage nausea and vomiting associated with highly emetogenic antineoplastic agents. Additionally, the guidelines recommend a 5-HT3 receptor antagonist combined with dexamethasone and a NK1 receptor antagonist for control of nausea and vomiting associated with moderately emetogenic carboplatin with an area under the curve (AUC) of greater than or equal to 4 mg/mL/min. The guidelines recommend that other antineoplastic agents with a moderate emetic risk should be managed with a two-drug combination of a 5-HT3 receptor antagonist combined with dexamethasone4. A single dose of a 5-HT3 receptor antagonist or dexamethasone is recommended for use with low emetic risk chemotherapy regimens, while no antiemetic is recommended for use with chemotherapy regimens having minimal emetic risk. ASCO also recommends 5-HT3 receptor antagonist use—often in conjunction with dexamethasone—to manage nausea and vomiting associated with minimal, low, moderate, and high emetic risk radiation therapy3, 4. A combination product containing palonosetron, a serotonin 5-HT3 receptor antagonist, and netupitant, a selective substance P selective neurokinin 1 receptor antagonist is available for use in combination with dexamethasone in adults to prevent acute and delayed nausea and vomiting associated with initial and repeat courses of cancer therapy, including, but not limited to, highly emetogenic chemotherapy5. Recommended FDA-approved dosage regimens for the available serotonin 5-HT3 receptor antagonists are summarized in Tables 1 and 2. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Recommended Dosage Regimen - CINV | Recommended Dosage Regimen - PONV | Recommended Dosage Regimen - RINV |
---|---|---|---|---|
dolasetron (Anzemet®) | 50 mg tablets | Moderately emetogenic: 100 mg* | --- | --- |
granisetron (generic) | 1 mg tablet | Moderately or highly emetogenic: 2 mg daily (as a single dose or divided by 12 hours; only on days chemotherapy given)* | --- | 2 mg once daily* |
granisetron (Sancuso®) | 3.1 mg/24 hrs transdermal patch | Moderately or highly emetogenic: 3.1 mg/24 hrs (one patch) per seven days*** | --- | --- |
|
|
|
16 mg* |
|
Legend:
- * Doses should be administered within 1 hour before chemotherapy, radiation, or induction of anesthesia
- ** Doses should be administered within 2 hours before surgery or radiation
- *** Patch should be applied within 24 to 48 hours before chemotherapy begins and removed a minimum of 24 hours after therapy completion; patch can be worn for up to 7 days depending on the duration of chemotherapy
- † Doses should be given 30 minutes before the start of single-day therapy
- ≠ First dose should be given 30 minutes before the start of chemotherapy, with a second dose 8 hours after the first dose, followed by 8 mg twice daily (every 12 hours) continued for 1 to 2 days after completion of chemotherapy
- †† Subsequent doses should be given every 8 hours after the first dose and continued for 1 to 2 days after completion of radiotherapy
- ††† Subsequent doses should be given every 8 hours after the first dose each day radiotherapy is given
Drug Name | Dosage Form/Strength | Recommended Dosage Regimen - CINV | Recommended Dosage Regimen - PONV | Recommended Dosage Regimen - RINV |
---|---|---|---|---|
netupitant/palonosetron (Akynzeo®) | 300 mg netupitant/ 0.5 mg palonosetron capsules | 300 mg netupitant/ 0.5 mg palonosetron (1 capsule)*+ | -- | -- |
Legend:
- * Doses should be administered within 1 hour before chemotherapy, radiation, or induction of anesthesia
- + For highly emetogenic chemotherapy, given concurrently with dexamethasone on days 1-4; with moderately emetogenic chemotherapy, given concurrently with dexamethasone on day 1
1.2. Pediatrics
Table 3 summarizes the current pediatric FDA-approved indications and dosages of the available serotonin 5-HT3 receptor antagonists. Dolasetron and ondansetron are the only oral serotonin 5-HT3 receptor antagonists FDA-approved for the prevention of CINV in children 1. Currently, there are no oral 5-3 receptor antagonists approved for preventing PONV in children. Dolasetron is approved for use in children greater than 2 years of age; safety and efficacy in children less than 2 years of age have not been established 1,2,6 . Ondansetron is approved for the prevention of nausea and vomiting associated with moderately emetogenic cancer chemotherapy in children 4 years of age and older. There are no data available addressing the use of 24 mg ondansetron tablets for highly emetogenic chemotherapy in children1, 2, 9. Safety and efficacy of granisetron in children less than 18 years of age have not been established1, 2, 7, 8. Netupitant/palonosetron combination therapy is not approved in pediatric patients as safety and efficacy data are not available for this agent in this patient population1, 2, 5. No data are available evaluating serotonin 5-HT3 receptor antagonists for the use of RINV in pediatric patients.
Drug Name | Dosage Form/Strength | Recommended Dosage Regimen - CINV | Recommended Dosage Regimen - PONV | Recommended Dosage Regimen - RINV |
---|---|---|---|---|
dolasetron (Anzemet®) | 50 mg tablets | Moderately emetogenic: 2-17 years old: 1.8 mg/kg, not to exceed 100 mg*# | --- | --- |
|
|
|
--- | --- |
Legend:
- * Doses should be administered within 1 hour before chemotherapy
- # For children who cannot take 100 mg due to weight or ability to swallow tablets, the injection solution may be mixed into apple or apple-grape juice for oral dosing in pediatric patients
- ** The first dose should be given 30 minutes before the start of chemotherapy, with a second dose 8 hours after the first dose, followed by 8 mg twice daily (every 12 hours) continued for 1 to 2 days after completion of chemotherapy
- † The first dose should be given 30 minutes before the start of chemotherapy, with subsequent doses 4 and 8 hours after the first dose, followed by 4 mg three times daily (every 8 hours) continued for 1 to 2 days after completion of chemotherapy
2. Duration of Therapy
Nausea and vomiting are common side effects of cancer-chemotherapy and radiation therapy. Treatment is usually intermittent and dependent on the emetogenicity of the scheduled therapy.3,4 Patient profiles documenting the use of oral serotonin 5-HT3 receptor antagonists without concurrent antineoplastic therapy will be reviewed. Patient profiles documenting the use of more than one transdermal granisetron (Sancuso®) patch per 7 days will be reviewed. The maximum duration for most cancer chemotherapy regimens is 30 days, although some chemotherapy protocols may last longer. Radiation therapy protocols for some patients may last for six to seven weeks. Unless otherwise specified, 5-HT3 receptor antagonist treatment regimens continuing for greater than 49 days will be reviewed for appropriateness of use. Approximately one-third of surgical patients experience nausea and vomiting after receiving general anesthesia. A single dose of a serotonin 5-HT3 receptor antagonist is usually administered one to two hours before the induction of anesthesia.
3. Duplicative Therapy
The use of two or more serotonin 5-HT3 receptor antagonists concurrently is not justified due to the potentially increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest). There are no additional therapeutic benefits when serotonin 5-HT3 receptor antagonists are used in combination. Patient profiles documenting receipt of multiple serotonin 5-HT3 receptor antagonists will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be reviewed to identify those drug regimens, which may result in clinically significant drug-drug interactions. The following drug-drug interactions summarized in Table 4 are considered clinically relevant for serotonin 5-HT3 receptor antagonists. Only those drug-drug interactions classified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level* |
---|---|---|---|---|
dolasetron, granisetron, ondansetron, palonosetron | QTc interval-prolonging medications (e.g., class Ia anti-arrhythmic agents†, class III anti-arrhythmic agents††, erythromycin, gemifloxacin, ziprasidone, tricyclic antidepressants, phenothiazines, pimozide) | increased risk of cardiotoxicity (QTc prolongation, torsades de pointes, cardiac arrest) due to potential for additive QT interval prolongation | monitor for interaction; alternative drug therapy may be preferred | contraindicated, major (DrugReax) 1-severe, 2-major (CP) |
dolasetron, granisetron, ondansetron, palonosetron | apomorphine | potential for profound hypotension and loss of consciousness due to additive hypotensive effects | avoid concurrent use | contraindicated (DrugReax) 1-severe (CP) |
dolasetron, granisetron, ondansetron, palonosetron | serotonergic agents | potential for serotonin syndrome with combined therapy due to additive serotonergic effects | monitor for signs/ symptoms of serotonin syndrome (e.g., hyperthermia, hypertension, rigidity) and discontinue combined therapy, if symptoms present | major (DrugReax) 2-major (CP) |
Legend:
- † Class Ia anti-arrhythmic agents include quinidine, disopyramide, procainamide
- †† Class III anti-arrhythmic agents include amiodarone, sotalol, dofetilide
- * CP = Clinical Pharmacology
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed September 8, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed September 8, 2022.
- Hesketh PJ, Kris MG, Basch E, et al. Antiemetics: American Society of Clinical Oncology clinical practice guideline update. J Clin Oncol. 2017 Oct 1;35(28):3240-3261.
- Hesketh PJ, Kris MG, Basch E, et al. Antiemetics: American Society of Clinical Oncology clinical practice guideline update. J Clin Oncol. Published online July 13, 2020.
- Netupitant/palonosetron capsules (Akynzeo®) package insert. Helsinn Therapeutics (U.S.), Inc., June 2021.
- Dolasetron mesylate tablets (Anzemet®) package insert. Validus Pharmaceuticals LLC, September 2021.
- Granisetron hydrochloride tablets package insert. Breckenridge Pharmaceutical, Inc., May 2022.
- Granisetron transdermal system (Sancuso®) package insert. Kyowa Kirin, Inc., December 2021.
- Ondansetron hydrochloride tablets/orally disintegrating tablets/oral solution (Zofran®, Zofran ODT®) Package Insert. Novartis Pharmaceuticals Corporation, October 2021.
Sickle Cell Disease Products
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 22, 2022
- Initially developed
- April 2020
1. Dosage
1.1. Adults
Current therapeutic options available for the outpatient management of sickle cell disease include hydroxyurea (Droxia®, Siklos®), L-glutamine (Endari®), and voxelotor (Oxbryta®). Hydroxyurea is a chemotherapeutic agent used to stimulate red blood cell (RBC) fetal hemoglobin (HbF) production, which is associated with a lower risk of acute sickle cell complications. Although the exact mechanism of action for sickle cell disease is unknown, hydroxyurea is FDA approved for patients with recurrent moderate-to-severe painful crises to reduce the frequency of painful crises and the need for blood transfusions. However, hydroxyurea cannot be used to treat crises1-7. L-glutamine is an essential amino acid thought to decrease oxidative damage to sickled RBCs by increasing nicotinamide adenine dinucleotide (NAD+) synthesis, thereby reducing the complications of sickle cell disease such as chronic hemolysis and vasoocclusive events.1-5,8 Voxelotor is a first-in-class hemoglobin S (HbS) polymerization inhibitor which increases the affinity of HbS for oxygen by stabilizing the oxygenated hemoglobin state2-5,9.
Maximum recommended adult dosages are summarized in Table 1. Medication profiles identifying patients prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
hydroxyurea (Droxia®) | 200 mg, 300 mg, 400 mg capsules | Reduction in frequency of painful crises and to reduce the need for blood transfusions in patients with moderate to severe painful crises | 35 mg/kg/day as long as blood counts are within acceptable range |
hydroxyurea (Siklos®) | 100 mg, 1000 mg tablets | Reduction in frequency of painful crises and to reduce the need for blood transfusions in patients with moderate to severe painful crises | 35 mg/kg/day as long as blood counts are within acceptable range |
L-glutamine (Endari®) | 5 gram powder packets | Reduction in acute complications of sickle cell disease |
Based on patient weight: Less than 30 kg 5 g twice daily 30-65 kg 10 g twice daily Greater than 65 kb 15 g twice daily |
voxelotor (Oxbryta®) | 500 mg tablets | Treatment of sickle cell disease | 1500 mg once daily+ |
Legend:
- + voxelotor dose should be increased to 2000 mg once daily if prescribed with a moderate CYP3A4 inducer and 2500 mg once daily if prescribed concurrently with strong CYP3A4 inducers or reduced to 1000 mg once daily in patients with severe hepatic impairment
1.2. Pediatrics
L-glutamine (Endari®), voxelotor (Oxbryta®), and hydroxyurea as Siklos® have been approved for use in pediatric patients, but the safety and efficacy of hydroxyurea (Droxia®) has not been established in pediatric patients6-10. Hydroxyurea (Siklos®) is approved for patients 2 years of age and older to reduce the frequency of recurrent moderate-to-severe painful crises7. Growth should be continuously monitored in pediatric patients prescribed hydroxyurea; additionally, pediatric patients 2-16 years of age are at greater risk of developing neutropenia compared to patients older than 16 years7. L-glutamine is approved for pediatric patients 5 years and older, while voxelotor is approved for patients 4 years of age and older2,8,9 .
The maximum recommended pediatric dose for individual agents is summarized in Table 2. Table 3 provides dosing recommendations for patients 4 years of age to less than 12 years of age while taking concomitant strong or moderate CYP3A4 inducers while taking voxelotor therapy. Table 4 provides dosing recommendations for patients 4 years of age to less than 12 years of age with severe hepatic impairment (Child-Pugh Class C) while taking voxelotor therapy. Prescribed dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
hydroxyurea (Siklos®) | 100 mg, 1000 mg tablets | Reduction in frequency of painful crises and to reduce the need for blood transfusions in patients with moderate to severe painful crises | 2-17 years of age: 35 mg/kg/day as long as blood counts are within acceptable range |
L-glutamine (Endari®) | 5 gram powder packets | Reduction in acute complications of sickle cell disease |
5 – 17 years of age: Based on patient weight: Less than 30 kg 5 g twice daily 30-65 kg 10 g twice daily Greater than 65 kb 15 g twice daily |
voxelotor (Oxbryta®) | 500 mg tablets, 300 mg tablet for suspension | Treatment of sickle cell disease |
|
Legend:
- +Voxelotor for those 12 years of age and older: dose should be increased to 2000mg once daily if prescribed with a moderate CYP3A4 inducer and 2500 mg once daily if prescribed concurrently with strong CYP3A4 inducers or reduced to 1000 mg once daily in patients with severe hepatic impairment.9 Further recommendations can be found for children less than 12 years of age in Table 3 and Table 4.
Body Weight | Concomitant Use of Strong CYP3A4 Inducers | Concomitant Use of Moderate CYP3A4 Inducers |
---|---|---|
40 kg or greater | 2500 mg (five 500 mg tablets) or 2400 mg (eight 300 mg tablets for oral suspension) | 2000 mg (four 500 mg tablets) OR 2100 mg (seven 300 mg tablets for oral suspension) |
20 kg to less than | 40 kg | 1500 mg 1200 mg |
10 kg to less than 20 kg | 900 mg | 900 mg |
Body Weight | Recommended Dose (once daily) |
---|---|
40 kg or greater | 1000 mg (two 500 mg tablets) OR 900 mg (three 300 mg tablets for oral suspension) |
20 kg to less than 40 kg | 600 mg |
10 kg to less than 20 kg | 300 mg |
2. Duration of Therapy
There is no basis for limiting long-term therapy of sickle cell disease; however, treatment with hydroxyurea requires monitoring of blood counts every 2 weeks due to the risk of myelosuppression. Hydroxyurea should be discontinued until hematologic recovery if blood counts reach toxic ranges defined as: neutrophils less than 2,000/mm3, platelets less than 80,000/mm3, hemoglobin less than 4.5 g/dL, or reticulocytes less than 80,000/mm3 if hemoglobin is less than 9 g/dL2,5-9.
3. Duplicative Therapy
Sickle cell disease treatment is complex and may require combination therapy. Both L-glutamine and voxelotor can be used alone or in combination with hydroxyurea1. In a phase 3 clinical trial, investigators found L-glutamine was effective in preventing vasoocclusive pain in patients with frequent episodes (greater than or equal to 2 in the prior year), regardless of hydroxyurea use; therefore, it can serve as an alternative to hydroxyurea or be used as an adjunctive therapy5,11. Similarly, voxelotor may be administered with or without hydroxyurea to reduce sickle cell anemia2-5,9,12.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Major drug-drug interactions considered clinically significant for sickle cell disease products are summarized in Table 3. Only those drug-drug interactions classified as clinical significance level 1/contraindicated or those considered life threatening which have not yet been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
Hydroxyurea (Droxia®, Siklos®) | Live Vaccines (MMR*, Varicella, Zoster, Smallpox, Typhoid, Yellow fever, Rotavirus+) | May increase risk of infection by live vaccine | Avoid use until at least 3 months after discontinuation of immunosuppressive drugs unless benefits clearly outweigh potential risks | Contraindicated (DrugReax) 1 – severe (CP) |
Hydroxyurea (Droxia®, Siklos®) | Stavudine | May increase risk of severe peripheral neuropathy, fatal pancreatitis, and hepatotoxicity | Avoid concurrent use | Major (DrugReax) 2 – major (CP) |
Hydroxyurea (Droxia®, Siklos®) | Didanosine | May result in fatal pancreatitis and hepatotoxicity | Avoid concurrent use | Major (DrugReax) 2 – major (CP) |
Voxelotor (Oxbryta®) | Strong or moderate CYP3A4 inducers (e.g. phenytoin, nafcillin, carbamazepine) | May reduce voxelotor plasma concentration and result in reduced efficacy | Avoid concurrent use or increase voxelotor dosage to 2000-2500 mg daily | Major (DrugReax) 2 – major (CP) |
Voxelotor (Oxbryta®) | Fluconazole | May increase voxelotor plasma concentration and result in increased toxicity | Avoid concurrent use, replace with alternative drugs, or decrease voxelotor dosage to 1000 mg daily | Major (DrugReax) 2 – major (CP) |
Voxelotor (Oxbryta®) | Strong CYP3A4 inhibitors (e.g. ketoconazole, clarithromycin, itraconazole) | May increase voxelotor plasma concentration and result in increased toxicity | Avoid concurrent use, replace with alternative drug, or Decrease voxelotor dosage to 1000 mg daily | Major (DrugReax) 2 – major (CP) |
Voxelotor (Oxbryta®) | CYP 3A4 substrates with narrow therapeutic indices (e.g. oxycodone, cyclosporine, fentanyl, tacrolimus) | May result in increased concentration of sensitive CYP3A4 substrates | Avoid concurrent use or consider dose reduction of sensitive CYP3A4 substrates with narrow therapeutic index | Major (DrugReax) 3 – moderate (CP) |
Legend:
- * MMR-Measles, mumps, rubella
- + Rotavirus vaccination is indicated up to 24 months of age; because hydroxyurea (Siklos®) is indicated for use in pediatric patients 2 years and older, there is a small chance that a patient might be considered for both treatments; this combination should be avoided.
5. References
- Chan C, Frei-Jones M. Sickle Cell Disease. In: DiPiro JT, Yee GC, Posey L, Haines ST, Nolin TD, Ellingrod V. eds. Pharmacotherapy: a pathophysiologic approach, 11e New York, NY: McGraw-Hill. Available from: http://accesspharmacy.mhmedical.com.ezproxy.lib.utexas.edu/content.aspx?bookid=2577§ionid=228902837. Accessed June 6, 2022.
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed June 6, 2022.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed June 6, 2022.
- Facts and Comparisons eAnswers [database online]. Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2022. Available at: https://fco-factsandcomparisons-com.ezproxy.lib.utexas.edu. Accessed June 9, 2022.
- Lexicomp Online, Lexi-Drugs Online, Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2022. Available at: https://online-lexi-com.ezproxy.lib.utexas.edu/lco/action/home. Accessed June 6, 2022.
- Hydroxyurea (Droxia®) package insert. E.R. Squibb & Sons, L.L.C., August 2021.
- Hydroxyurea (Siklos®) package insert. Medunik. December 2021.
- L-glutamine (Endari®) package insert. Emmaus Medical, Inc., October 2020.
- Voxelotor (Oxbryta®) package insert. Global Blood Therapeutics Inc., December 2021.
- Lexicomp Online, Pediatric and Neonatal Lexi-Drugs Online, Hudson, Ohio: Wolters Kluwer Clinical Drug Information, Inc.; 2022. Available at: https://online-lexi-com.ezproxy.lib.utexas.edu/lco/action/home. Accessed June 7, 2022.
- Niihara Y, Miller ST, Kanter J, et al. Investigators of the phase 3 trial of l-glutamine in sickle cell disease. A phase 3 trial of l-glutamine in sickle cell disease. N Engl J Med. 2018;379(3):226-235. [PubMed 30021096] 10.1056/NEJMoa1715971
- Vichinsky E, Hoppe CC, Ataga KI, et al. A phase 3 randomized trial of voxelotor in sickle cell disease. N Engl J Med. 2019;381:509-19. doi: 10.1056/NEJMoa1903212
Skeletal Muscle Relaxants
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- July 22, 2022; June 2020; May 2018; May 2016; September 2014; December 2012; March 2011.
- Initially developed
- October 2008
1. Dosage
1.1. Adults
The skeletal muscle relaxants (SMRs), carisoprodol, chlorzoxazone, cyclobenzaprine, methocarbamol, metaxalone, and orphenadrine, are FDA-approved for short-term use to manage discomfort associated with acute, painful musculoskeletal conditions such as strains, sprains, and other muscle injuries1-10. These agents should be used as an adjunct to non-pharmacologic treatments, including rest and physical therapy. Baclofen is FDA approved to alleviate signs and symptoms of spasticity resulting from multiple sclerosis, particularly for the relief of flexor spasms and concomitant pain, clonus, and muscular rigidity. Baclofen may also be useful in patients with spinal cord injuries and other spinal cord diseases1,2,11-14. Tizanidine is FDA approved for the management of spasticity, and dantrolene is FDA approved for managing spasticity due to upper motor neuron disorders (e.g., spinal cord injury, cerebral palsy, multiple sclerosis, or stroke)1,2,15,16. Maximum recommended dosages for SMRs are summarized in Table 1. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
baclofen (generic, Lyvispah®, Ozobax®, Fleqsuvy®) | 5 mg, 10 mg, 20 mg tablets (generic); 5 mg, 10 mg, 20 mg oral granules (Lyvispah®); 5 mg/ 5 mL oral solution (Ozobax®, generic); 5 mg/mL oral suspension (Fleqsuvy®) | spasticity | 80 mg/day, in divided doses |
carisoprodol (Soma®, generic) | 250 mg, 350 mg tablets | muscle spasm | 1400 mg/day, in divided doses |
chlorzoxazone (generic) | 250 mg, 375 mg, 500 mg tablets, 750 mg tablets | muscle spasm | 3000 mg/day, in divided doses |
chlorzoxazone (Lorzone®) | 375 mg, 750 mg tablets | muscle spasm | 3000 mg/day, in divided doses |
cyclobenzaprine tablet (Fexmid®, generic) | 5 mg, 7.5 mg (Fexmid®), 10 mg tablets | muscle spasm | 30 mg/day, in divided doses |
cyclobenzaprine capsule, extended-release (Amrix®, generic) | 15 mg, 30 mg capsules | muscle spasm | 30 mg/day |
dantrolene (Dantrium®, generic) | 25 mg, 50 mg, 100 mg capsules | spasticity | 400 mg/day, in divided doses |
metaxalone (Skelaxin®, generic) | 400 mg, 800 mg tablets | muscle spasm | 3200 mg/day, in divided doses |
methocarbamol (Robaxin®, generic) | 500 mg, 750 mg tablets | muscle spasm | 8 g/day, in divided doses |
orphenadrine ER (generic) | 100 mg extended-release tablet | muscle spasm | 200 mg/day, in divided doses |
tizanidine | 2 mg, 4 mg tablets (Zanaflex®, generic); 2 mg, 4 mg, 6 mg capsules (Zanaflex®, generic) | spasticity | 36 mg/day, in divided doses |
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
carisoprodol/ ASA/codeine (generic) | 200 mg/325 mg/16 mg tablets | acute pain associated with musculoskeletal conditions | 400 mg/650 mg/32 mg (2 tablets) four times daily |
orphenadrine/ ASA/ caffeine (Norgesic Forte®, generic) | 25 mg/385 mg/30 mg, 50 mg/770 mg/60 mg tablets | Mild to moderate pain of acute musculoskeletal disorders | 200 mg/3080 mg/240 mg daily |
Legend:
- ASA - aspirin
1.1.1. Dosing in Renal and Hepatic Disease
Carisoprodol dosing adjustments should be considered for patients with severe hepatic insufficiency, as carisoprodol is extensively metabolized by the liver. Carisoprodol is also renally eliminated and should be dosed cautiously in patients with severe renal impairment1-3 .
Chlorzoxazone should be administered cautiously, if at all, in patients with a history of hepatic disease as hepatotoxicity has been reported with chlorzoxazone use. Chlorzoxazone should not be prescribed to patients with active hepatic disease, including hepatitis1,2,4 .
Cyclobenzaprine is extensively metabolized by liver and is not recommended for use in patients with moderate to severe hepatic impairment. Cyclobenzaprine dosage adjustments are necessary in patients with mild hepatic impairment1,2,5-7 .
Administer baclofen cautiously in patients with renal impairment as the drug is primarily renally excreted1,2,11 .
Orphenadrine should be administered cautiously to patients with renal and hepatic disease, as the drug is extensively metabolized in the liver, with metabolites and unchanged drug eliminated by the kidneys1,2,10 .
Dosage adjustments for methocarbamol may be necessary for patients with hepatic impairment, as the drug is extensively metabolized in the liver1,2,9 .
Metaxalone is contraindicated for use in patients with significantly impaired renal and/or hepatic function1,2.
Dantrolene should not be prescribed to patients with hepatic disease due to risk of hepatic injury associated with this drug1,2,16.Tizanidine is extensively metabolized by the liver and eliminated by the kidneys; therefore, tizanidine should be prescribed cautiously to patients with hepatic and renal impairment1,2,15< ./p>
1.2. Pediatrics
With the exception of dantrolene, skeletal muscle relaxants are not FDA-approved for use in children1,2,16. Safety and efficacy of cyclobenzaprine extended-release capsules (Amrix®) have not been evaluated in pediatric patients, including adolescents1,2,7. Select skeletal muscle relaxants are FDA-approved for use in adolescents. Recommended pediatric dosages and age limitations for skeletal muscle relaxants are summarized in Table 2.
Although not FDA-approved, baclofen has been used for spasticity in pediatric patients 2 to 7 years of age in doses up to 40 mg/day and in children 8 to 11 years of age in maximum doses of 60 mg/day1.
Drug Name | Treatment Indication | Maximum Recommended Dosage |
---|---|---|
baclofen | spasticity | Greater than or equal to 12 years of age: 80 mg/day, in divided doses |
dantrolene | spasticity | Greater than or equal to 5 years of age: 400 mg/day, in divided doses |
carisoprodol | muscle spasm | Greater than or equal to 16 years of age: 1400 mg/day, in divided doses |
cyclobenzaprine tablets | muscle spasm | Greater than or equal to 15 years of age: 30 mg/day, in divided doses |
metaxalone | muscle spasm | Greater than 12 years of age: 3200 mg/day, in divided doses |
methocarbamol | muscle spasm | Greater than or equal to 16 years of age: 8 g/day, in divided doses |
2. Duration of Therapy
For muscle spasm, centrally acting skeletal muscle relaxants have been evaluated for short-term use in managing acute pain associated with musculoskeletal conditions. Therefore, with the exception of carisoprodol and cyclobenzaprine, patient profiles documenting prolonged skeletal muscle relaxant use for greater than three months will be reviewed.
Cyclobenzaprine therapy for muscle spasm should not last longer than three weeks as efficacy beyond this time period has not been demonstrated1,2,5-7.
Limited information exists regarding carisoprodol therapy duration for muscle spasm. As carisoprodol has been evaluated only for use in the treatment of acute painful musculoskeletal conditions, patient profiles documenting prolonged carisoprodol or carisoprodol combination therapy use (greater than 21 days) will be reviewed. Cases of psychological dependence have been reported following carisoprodol administration.19,20 Therefore, carisoprodol should be administered cautiously, if at all, to patients with a history of drug or alcohol abuse and/or dependence.
There is no basis for limiting therapy duration for skeletal muscle relaxants prescribed for spasticity (e.g., baclofen, dantrolene, tizanidine) as spasticity due to upper motor neuron disorders (e.g., spinal cord injury, cerebral palsy, multiple sclerosis, stroke) is a chronic disorder.
3. Duplicative Therapy
Concurrent administration of two or more skeletal muscle relaxants is not justified as additional therapeutic benefit is not realized and patients may be subjected to enhanced pharmacologic and/or adverse effects. Adjunctive prescriptions for two or more skeletal muscle relaxants will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens, which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically significant for skeletal muscle relaxants are summarized in Table 3. Only those drug-drug interactions identified as major severity or those considered life threatening which have not been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level # |
---|---|---|---|---|
cyclobenzaprine | MAOIs | combined administration may increase risk of hypertensive crises, convulsions, and death; mechanism not determined but may be due to additive norepinephrine effects or serotonin syndrome | combined use contraindicated; do not use cyclobenzaprine within 14 days of MAOI discontinuation | contraindicated (DrugReax) 1-severe (CP) |
cyclobenzaprine, tizanidine | QT interval-prolonging medications | Cyclobenzaprine is structurally related to TCAs, which have been associated with QT interval prolongation; combined administration may increase risk of QT interval prolongation; tizanidine also associated with QT interval prolongation in post marketing reports | administer combination cautiously and monitor for QT interval prolongation | contraindicated (DrugReax) 1-severe (CP) |
cyclobenzaprine | SSRIs/SNRIs | combined administration may increase risk of serotonin syndrome (e.g., tremor, fever, agitation, seizures, coma) due to additive serotonergic effects | administer drug combination cautiously; monitor closely for signs/symptoms of serotonin syndrome | major (DrugReax) 2-major (CP) |
cyclobenzaprine | tramadol | combined administration may increase seizure risk as cyclobenzaprine is structurally related to TCAs and TCAs may decrease seizure threshold; combined use may also increase risk of serotonin syndrome | avoid combination, if possible, especially in patients predisposed to seizures; if combination necessary, monitor closely for seizure activity and serotonin syndrome sign/ symptoms | major (DrugReax) 3-moderate (CP) |
orphenadrine | phenothiazines | combined administration may result in decreased phenothiazine serum levels/decreased phenothiazine effectiveness due to orphenadrine anticholinergic effects, which delay phenothiazine gastric emptying and absorption; combined therapy may also produce additive anticholinergic effects | avoid combination, if possible; if combined therapy necessary, adjust phenothiazine doses to effect | moderate (DrugReax) 3-moderate (CP) |
skeletal muscle relaxants | CNS depressants | increased risk of additive CNS depressant effects (e.g., sedation, respiratory depression) | administer combined therapy cautiously; adjust doses as necessary | major (DrugReax) 3-moderate (CP) |
tizanidine | potent CYP1A2 inhibitors (e.g., ciprofloxacin, fluvoxamine) | tizanidine is primarily metabolized by CYP1A2; adjunctive administration may result in increased tizanidine levels/enhanced pharmacologic/adverse effects (e.g., hypotension, excessive sedation) due to substantial CYP1A2 | combined use contraindicated | contraindicated (DrugReax) 1-severe (CP) |
tizanidine | other CYP1A2 inhibitors (e.g., acyclovir, verapamil) | tizanidine primarily metabolized by CYP1A2; adjunctive administration may result in increased tizanidine levels and enhanced pharmacologic/ adverse effects (e.g., hypotension, excessive sedation) due to substantial CYP1A2 inhibition | avoid combination, if possible; if adjunctive therapy necessary, administer cautiously and observe for increased adverse effects | major (DrugReax) 2-major (CP) |
Legend:
- #CP = Clinical Pharmacology
- CNS = central nervous system
- MAOIs = monoamine oxidase inhibitors
- SNRIs = serotonin/norepinephrine reuptake inhibitors
- SSRIs = selective serotonin reuptake inhibitors
- TCAs = tricyclic antidepressant
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc; 2022. Available at: http://www.clinicalpharmacology.com. Accessed May 26, 2022.
- IBM Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/ (cited: May 26, 2022).
- Carisoprodol tablets package insert. Nostrum Laboratories, Inc., February 2020.
- Chlorzoxazone tablets package insert. Aurobindo Pharma Limited. January 2022.
- Cyclobenzaprine tablets package insert. Cipla USA, Inc., March 2021.
- Cyclobenzaprine (Fexmid®) package insert. All Pharma, LLC., January 2020.
- Cyclobenzaprine (Amrix®) extended-release capsule package insert. Cephalon, Inc., May 2020.
- Metaxalone (Skelaxin®) tablet package insert. Pfizer Laboratories Div Pfizer, Inc., April 2022.
- Methocarbamol tablet package insert. Camber Pharmaceuticals Inc., April 2021.
- Orphenadrine extended-release tablet package insert. Amneal Pharmaceuticals of New York, LLC., December 2019.
- Baclofen oral tablet package insert. Advagen Pharma Limited. February 2022.
- Baclofen oral granules (Lyvispah®) package insert. Saol Therapeutics, Inc. December 2021.
- Baclofen oral solution (Ozobax®) package insert. Metacel Pharmaceuticals, LLC. July 2021.
- Baclofen oral suspension (Fleqsuvy®) package insert. Azurity Pharmaceuticals, Inc. February 2022.
- Tizanidine tablets and capsules (Zanaflex®) package insert. Covis Pharma US, Inc. November 2021.
- Dantrolene oral capsule package insert. Amneal Pharmaceuticals of New York LLC, December 2020.
- Carisoprodol/ aspirin/ codeine combination oral tablet package insert. Ingenus Pharmaceuticals, LLC. December 2021.
- Orphenadrine/ aspirin/ caffeine (Norgesic Forte®) combination oral tablet package insert. Poly Pharmaceuticals, Inc. March 2022.
- Reeves RR. Beddingfield JJ. Mack JE. Carisoprodol withdrawal syndrome. Pharmacotherapy. 2004; 24:1804-6.
- Reeves RR, Burke RS, Kose S. Carisoprodol: update on abuse potential and legal status. South Med J. 2012;105(11):619-23.
Substance P/Neurokinin1 Receptor Antagonists
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- October 21, 2022; September 2020; September 2018; September 2016; May 2015; August 2013; June 2013; September 2011; October 2009; February 2006; January 2006
- Initially developed
- Dec. 2003
1. Dosage
Current therapies for chemotherapy-induced nausea/vomiting (CINV) and post-operative nausea and vomiting (PONV) target corticosteroid, dopamine, and serotonin (5-HT3) receptors. In the central nervous system, tachykinins and neurokinins play a role in some autonomic reflexes and behaviors. Substance P and NK1 receptors control the emetic reflex, and substance P increases contractions of smooth gastrointestinal muscles leading to vasodilation1. Aprepitant is a selective human substance P/neurokinin 1 (NK1) antagonist with a high affinity for NK1 receptors and little, if any, attraction for corticosteroid, dopamine, or 5-HT3 receptors1-5. Rolapitant (Varubi®) is a selective, competitive antagonist of substance P/NK1 receptors, and it has little to no affinity for NK2 or NK3 receptors1,2,6. Combination therapy including netupitant, a substance P/NK1 antagonist and palonosetron, a selective 5-HT3 receptor antagonist (Akynzeo®), is also available. Palonosetron targets CINV in the acute phase while netupitant prevents CINV in both the acute and delayed phases1,2,7.
1.1. Adults
Aprepitant is FDA-approved for prevention of CINV due to high and moderate emetogenic agents including high dose cisplatin, as well as prevention for PONV1-4. When used to prevent CINV with highly emetogenic chemotherapy, aprepitant and rolapitant are prescribed as triple or quadruple therapy in combination with a 5-HT3 receptor antagonist, dexamethasone, and olanzapine based on product labeling, clinical trial data, as well as data from available published antiemetic guidelines8,9. Rolapitant is indicated to manage delayed CINV seen with initial and repeat courses of chemotherapy, including, but not limited to, highly emetogenic chemotherapy1,2,6. Netupitant (substance P/NK1 receptor antagonist) and palonosetron (selective 5-HT3 receptor antagonist), as combination therapy, are FDA-approved to prevent acute and delayed CINV seen with initial and repeat courses of chemotherapy, including, but not limited to, highly emetogenic chemotherapy1,2,7. Maximum recommended adult dosages for substance P/NK1 receptor antagonists are summarized in Tables 1 and 2. Dosages exceeding those listed in Tables 1 and 2 will be reviewed.
Drug Name | Dosage Form/Strength | Treatment Indication | Maximum Recommended Dosage |
---|---|---|---|
aprepitant (Emend®) | 40 mg, 80 mg, 125 mg capsules 125 mg/5 ml oral suspension |
preventing CINV: highly or moderately emetogenic chemotherapy: day 1 (one hour before chemotherapy) |
125 mg/day (as capsule or suspension)*! |
preventing CINV: highly or moderately emetogenic chemotherapy: days 2 and 3 |
80 mg/day (as capsule or suspension)+@ ¥α | ||
PONV: within 3 hours of anesthesia induction |
40 mg as a single dose (as capsule) | ||
rolapitant (Varubi®) | 90 mg tablet | preventing delayed CINV seen with highly emetogenic chemotherapy | 180 mg as a single dose 1 to 2 hours before chemotherapy on day 1 (2 x 90 mg tablets)^!@ |
preventing delayed CINV seen with non-highly emetogenic chemotherapy and combinations of anthracycline and cyclophosphamide | 180 mg as a single dose 1 to 2 hours before chemotherapy on day 1 (2 x 90 mg tablets)#**α |
Legend:
- * for high and moderate emetic risk regimens, use in conjunction with a 5-HT3 receptor antagonist plus dexamethasone on day 1 (product labeling)
- ! for high emetic risk regimens, use in conjunction with a 5-HT3 receptor antagonist, dexamethasone, and olanzapine on day 1 (guideline recommendation)8,9
- + for high emetic risk regimens, use in conjunction with dexamethasone on days 2-3; dexamethasone monotherapy is given on day 4 (product labeling)
- @ for high emetic risk regimens, administer dexamethasone and olanzapine on days 2-4 (guideline recommendation)8,9
- ¥ for high emetic risk regimens containing an anthracycline combined with cyclophosphamide, dexamethasone should not be continued on days 2-4 (guideline recommendation)8,9
- α for moderate emetic risk regimens with a known risk for delayed nausea and vomiting such as cyclophosphamide, doxorubicin, or oxaliplatin; continue dexamethasone through day 3 (guideline recommendation)8,9
- ^ in conjunction with dexamethasone and a 5-HT3 receptor antagonist on day 1, and dexamethasone on days 2-4 (product labeling)
- # for moderate emetic risk regimens, use in conjunction with dexamethasone and a 5-HT3 receptor antagonist on day 1. Continue 5-HT3 receptor antagonist therapy on days 2-4 (product labeling).
- ** for high emetic risk regimens containing an anthracycline combined with cyclophosphamide, use in conjunction with a 5-HT3 receptor antagonist, dexamethasone, and olanzapine on day 1. Olanzapine monotherapy is given on days 2-4 (guideline recommendation)8,9
- PONV = postoperative nausea and vomiting
- CINV = chemotherapy-induced nausea and vomiting
- PONV = postoperative nausea and vomiting
Drug Name | Treatment Indication | Dosage Form/Strength | Maximum Recommended Dosage |
---|---|---|---|
netupitant/palonosetron (Akynzeo®) | preventing acute and delayed CINV seen with chemotherapy (highly emetogenic) | 300 mg netupitant/ 0.5 mg palonosetron capsules | 1 capsule on day 1 (one hour before chemotherapy)**#! |
preventing acute and delayed CINV seen with chemotherapy (NOT highly emetogenic) | 300 mg netupitant/ 0.5 mg palonosetron capsules | 1 capsule on day 1 (one hour before chemotherapy)++ α |
Legend:
- ** in conjunction with dexamethasone 30 minutes before chemotherapy on day 1, and dexamethasone once daily on days 2-4 (product labeling)
- # for high emetic risk regimens, use in conjunction with dexamethasone and olanzapine on day 1. Continue dexamethasone and olanzapine on days 2-4 (guideline recommendation)8,9
- ! for high emetic risk regimens containing an anthracycline combined with cyclophosphamide, use in conjunction with dexamethasone and olanzapine on day 1. Olanzapine monotherapy is given on days 2-4 (guideline recommendation)8,9
- ++ for regimens that are not considered high emetic risk, use in conjunction with dexamethasone 30 minutes before chemotherapy on day 1 (product labeling)
- α for moderate emetic risk regimens with a known risk for delayed nausea and vomiting such as cyclophosphamide, doxorubicin, or oxaliplatin; continue dexamethasone through day 3 (guideline recommendation)8,9
- CINV = chemotherapy-induced nausea and vomiting
1.2. Pediatrics
Aprepitant capsules are FDA-approved for use in children and adolescents 12 years of age and older to prevent acute and delayed nausea and vomiting associated with initial and repeat courses of moderately to highly emetogenic chemotherapy (includes high-dose cisplatin). Aprepitant oral suspension is FDA-approved to prevent acute and delayed nausea and vomiting seen with initial and repeat courses of highly emetogenic chemotherapy (includes high-dose cisplatin) as well as nausea and vomiting associated with moderately emetogenic chemotherapy in pediatric patients 6 months of age and to 11 years of age weighing at least 6 kg or pediatric patients of any age weighing at least 6 kg who cannot swallow capsules1-4. Rolapitant is not yet approved for use in pediatric patients, as safety and efficacy have not been established1,2,6. Combination therapy with netupitant and palonosetron is not FDA-approved in patients less than 18 years as safety and efficacy have not been established in this patient population1,2,7. Pediatric aprepitant dosages are summarized in Table 3. Aprepitant dosages exceeding these recommendations in pediatric patients will be reviewed.
Treatment Indication | Patient Characteristics | Usual Dosage/Dosage Form | Maximum Recommended Dosage |
---|---|---|---|
CINV: Moderate to highly emetogenic chemotherapy – day 1 | 6 months to less than 12 years (at least 6 kg) | 3 mg/kg on day 1 (as suspension)*! | 125 mg on day 1 |
CINV: Moderate to highly emetogenic chemotherapy – days 2 and 3 | 6 months to less than 12 years (at least 6 kg) | 2 mg/kg on days 2 and 3 (as suspension)+! | 80 mg on days 2 and 3 |
CINV: Moderate to highly emetogenic chemotherapy – day 1 | pediatric patients any age (at least 6 kg) unable to swallow capsules | 3 mg/kg on day 1 (as suspension)*! | 125 mg on day 1 |
CINV: Moderate to highly emetogenic chemotherapy – days 2 and 3 | pediatric patients any age (at least 6 kg) unable to swallow capsules | 2 mg/kg on days 2 and 3 (as suspension)+! | 80 mg on days 2 and 3 |
moderately to highly emetogenic chemotherapy – day 1 | greater than or equal to 12 years of age | 125 mg on day 1 one hour before chemotherapy (as capsule)*! | 125 mg on day 1 |
moderately to highly emetogenic chemotherapy – days 2 and 3 | greater than or equal to 12 years of age | 80 mg on days 2 and 3 (as capsule)+! | 80 mg on days 2 and 3 |
Legend:
- * in conjunction with a 5-HT3 receptor antagonist plus dexamethasone on day 1 (product labeling)
- + in conjunction with dexamethasone on days 2-3; dexamethasone also given on day 4 (product labeling)
- ! for moderate emetic risk regimens, a two-drug combination of a 5-HT3 receptor antagonist and dexamethasone should be offered. If a pediatric patient is unable to take dexamethasone, a two-drug combination of a 5-HT3 receptor antagonist and aprepitant should be offered (guideline recommendation)8
2. Duration of Therapy
The maximum treatment duration for aprepitant is three days per chemotherapy cycle for moderately or highly emetogenic chemotherapy regimens. The maximum treatment duration for rolapitant and netupitant/palonosetron is one day for each chemotherapy cycle. Chemotherapy regimens are administered for one to several days within a 30-day time period and repeated in cycles. The number of cycles varies based on the type of cancer being treated. Unless otherwise specified, aprepitant treatment regimens continuing for greater than three days per chemotherapy cycle and rolapitant and netupitant/palonosetron treatment regimens continuing for longer than one day per chemotherapy cycle will be reviewed for appropriateness of use.
3. Duplicative Therapy
Aprepitant is the first medication in the class of selective human substance P/NK1 antagonists. Cinvanti® (aprepitant) intravenous emulsion is indicated for use on day 1 of the chemotherapy cycle, and oral aprepitant is indicated on days two and three for moderate emetic risk chemotherapy regimens10. Fosaprepitant, the injectable aprepitant formulation, was indicated for use on day 1 of the chemotherapy cycle as the 115 mg dose with oral aprepitant administered on days 2 and 3; however, the 115 mg vial is no longer commercially available. Fosaprepitant 150 mg injection is not administered with oral aprepitant on any treatment days5. Dosage regimens incorporating concurrent use of fosaprepitant 150 mg and aprepitant will be reviewed. Concurrent administration of selective human substance P/NK1 receptor antagonists is not supported in the literature and may result in enhance adverse pharmacologic effects. Additionally, combined use of oral rolapitant or netupitant/palonosetron is not indicated and may result in increased adverse effects. Combined use of substance P/NK1 receptor antagonists or adjunctive use of oral and parenteral substance P/NK1 receptor antagonist formulations is not recommended and will be reviewed.
4. Drug-Drug Interactions
Patient profiles will be monitored to identify regimens that may have clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for substance P/NK1 receptor antagonists are summarized in Table 4. Only those interactions classified as clinical significance level 1, contraindicated, or life threatening which have not been classified will be reviewed.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level* |
---|---|---|---|---|
aprepitant | CYP3A4 inducers (e.g., carbamazepine, rifampin) | adjunctive use may induce aprepitant metabolism and potential for reduced aprepitant serum levels and decreased aprepitant efficacy; CYP3A4 inducer activity may also be reduced, as aprepitant is also a CYP3A4 inducer | monitor patients for aprepitant efficacy; if needed, modify aprepitant dose or choose alternative anti-emetic without CYP3A4 inducer interaction; monitor CYP3A4 inducer activity and adjust dose as necessary | moderate (DrugReax) 3-moderate (CP) |
aprepitant | CYP3A4 inhibitors (e.g., itraconazole, ketoconazole, nefazodone, clarithromycin, ritonavir) | combined use may result in reduced aprepitant metabolism, increased serum aprepitant levels, and the potential for adverse effects; however, aprepitant appears to be tolerated over a wide dosage range and is prescribed for short time periods | clinical significance of interaction not well defined; observe patients for increased aprepitant adverse effects and adjust dose if necessary | major (DrugReax) 3-moderate (CP) |
aprepitant | CYP3A4 substrates (e.g., aripiprazole, colchicine, diltiazem, phenytoin, ranolazine, ziprasidone) | combined use may result in elevated substrate plasma levels and potential for toxicity or loss of efficacy, as aprepitant is known CYP3A4 inhibitor and inducer and may interfere with metabolism of medications metabolized by CYP3A4 | use aprepitant cautiously with compounds metabolized by CYP3A4; monitor patients carefully for signs/ symptoms of substrate toxicity or loss of efficacy and adjust substrate dose as necessary | major (DrugReax) 2-major, 3-moderate (CP) |
aprepitant | oral contraceptives (OC) | adjunctive use may result in reduced OC efficacy as AUC for both estrogen and progestin components may be reduced | alternative or back-up methods of contraception recommended during time that aprepitant is prescribed and for one month following last aprepitant dose | moderate (DrugReax) 2-major (CP) |
aprepitant | pimozide (Orap®) | co-use may result in elevated plasma pimozide levels and increased risk for cardiac arrhythmias, QT interval prolongation, as aprepitant inhibits CYP3A4 (enzyme for pimozide metabolism) | adjunctive use contraindicated | contraindicated (DrugReax) 1-severe (CP) |
aprepitant | phenytoin | combined use may result in reduced phenytoin levels and potential loss of seizure control as aprepitant induces CYP2C9, the enzyme that metabolizes phenytoin | administer cautiously together; observe for loss of seizure control | moderate (DrugReax) 3-moderate (CP) |
aprepitant | warfarin | co-administration may result in significant decreases in warfarin serum levels, INR and warfarin efficacy, as aprepitant induces CYP2C9, the enzyme involved in warfarin metabolism | monitor clotting status closely within 2-week period (especially 7 to 10 days) after each 3-day chemotherapy regimen or following single-dose therapy for PONV | major (DrugReax) 2-major (CP) |
netupitant/palonosetron (palonosetron component) | apomorphine (Apokyn®) | adjunctive administration may result in hypotension and loss of consciousness due to additive hypotensive effects | avoid combined use | contraindicated (DrugReax) 1-severe (CP) |
netupitant/palonosetron (netupitant component), rolapitant | strong CYP3A4 inducers (e.g., rifampin) | concurrent use may reduce netupitant, rolapitant efficacy with reduced serum levels due to CYP3A4-induced netupitant, rolapitant metabolism | avoid co-administration | major (DrugReax) 2-major (CP) |
netupitant/palonosetron (netupitant component) | CYP3A4 inhibitors | combined administration with strong CYP3A4 inhibitors may increase serum netupitant levels as netupitant is metabolized by CYP3A4; netupitant is CYP3A4 inhibitor and may increase concentrations of other medications | no netupitant dosage adjustment necessary due to single dose therapy; monitor for enhanced pharmacologic/ adverse effects and adjust dosages of other medications as necessary | 3-moderate (CP) |
netupitant/palonosetron (netupitant component) | CYP3A4 substrates | adjunctive use may result in enhanced substrate pharmacologic/ adverse effects as netupitant is CYP3A4 inhibitor and may increase concentrations of other medications | use cautiously together; monitor for enhanced pharmacologic/ adverse effects and adjust substrate dosages as necessary | moderate (DrugReax) 2-major, 3-moderate (CP) |
netupitant/ palonosetron (netupitant component) | flibanserin (Addyi®) | combined use may lead to significant hypotension and syncope due to increased flibanserin serum levels as netupitant is moderate CYP3A4 inhibitor and flibanserin is CYP3A4 substrate | avoid concurrent use for 1 week, if possible; if combined use necessary, consider CYP3A4 substrate dose reduction | major (DrugReax) 1-severe (CP) |
netupitant/palonosetron (palonosetron component) | serotonergic agents | potential for serotonin syndrome with combined therapy due to additive serotonergic effects with palonosetron | monitor for signs/ symptoms of serotonin syndrome (e.g., hyperthermia, hypertension, rigidity) and discontinue combined therapy, if symptoms present | major (DrugReax) 2-major (CP) |
rolapitant | breast cancer resistant protein (BCRP) substrates with narrow therapeutic index (e.g., methotrexate, topotecan) | combined use may increase BCRP substrate levels and potential for adverse effects as rolapitant is BCRP inhibitor | avoid use, if possible; if adjunctive use necessary, monitor for BCRP substrate adverse events | 2-major (CP) |
rolapitant | p-glycoprotein substrates with narrow therapeutic index (e.g., digoxin) | combined use may increase p-glycoprotein substrate levels and potential for adverse effects as rolapitant is p-glycoprotein inhibitor | avoid use, if possible; if adjunctive use necessary, monitor for p-glycoprotein substrate adverse events | major (DrugReax) 3-moderate (CP) |
rolapitant | pimozide | concurrent administration may increase risk of pimozide-associated QT interval prolongation/ torsades de pointes as pimozide metabolized by CYP2D6 and rolapitant is CYP2D6 inhibitor | avoid combined use, if possible; if concomitant use necessary, monitor for pimozide adverse effects | major (DrugReax) 1-severe (CP) |
rolapitant | other CYP2D6 substrates | combined use may increase CYP2D6 substrate levels and potential for adverse effects as rolapitant is CYP2D6 inhibitor | use cautiously together; monitor for enhanced pharmacologic/ adverse effects and adjust substrate dosages as necessary | major (DrugReax) 2-major, 3-moderate (CP) |
rolapitant | thioridazine | combined administration may increase risk of QT interval prolongation/ torsades de pointes with thioridazine as rolapitant CYP3A4 inhibitor and thioridazine CYP3A4 substrate | avoid concurrent use | contraindicated (DrugReax) 1-severe (CP) |
Legend:
- *CP = Clinical Pharmacology
5. References
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2022. Available at: http://clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed September 14, 2022.
- IMB Micromedex® DRUGDEX® (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu. Accessed September 14, 2022.
- Aprepitant capsules, oral suspension (Emend®) package insert. Merck & Co., Inc., May 2022.
- Aprepitant oral capsules package insert. Torrent Pharmceuticals Limited. January 2022.
- Fosaprepitant dimeglumine for injection (Emend®) package insert. Merck & Co., Inc., May 2022.
- Rolapitant tablets, injectable emulsion (Varubi®) package insert. TerSera Therapeutics, LLC., August 2020.
- Netupitant/palonosetron capsules (Akynzeo®) package insert. Helsinn Therapeutics (U.S.), Inc., May 2022.
- Hesketh PJ, Kris MG, Basch E, et al. Antiemetics: asco guideline update. Journal of Clinical Onclogy. 2020;38(24):2782-2797.
- National Comprehensive Cancer Network. Antiemesis (Version 2.2022). https://www.nccn.org/professionals/physician_gls/pdf/antiemesis.pdf. Accessed September 14, 2022.
- Aprepitant emulsion for injection (Cinvanti®) package insert. Heron Therapeutics, Inc., March 2022.
Topical Calcineurin Inhibitors
Introduction
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Jan. 2022; Nov. 2019; Dec. 2017; Aug. 2015; Dec. 2013; Feb. 2012; May 2010; Dec. 2006
- Initially developed
- Oct. 2006
1. Dosage
Topical calcineurin inhibitors are FDA-approved as second-line agents for atopic dermatitis management in non-immunocompromised adults and children greater than 2 years of age who have not responded to other available therapies for atopic dermatitis. Pimecrolimus (Elidel®) is indicated for short-term, intermittent treatment of mild-to-moderate atopic dermatitis, while tacrolimus (Protopic®) is indicated for short-term, intermittent therapy of moderate-to-severe atopic dermatitis1-4.
Due to the uncertainty of the carcinogenic risk, the FDA issued a Black Box Warning for topical calcineurin inhibitors in 2006 stating that rare cases of malignancy have been reported, continuous long-term use should be avoided, and application should be limited to areas of the body with atopic dermatitis. Additionally, topical calcineurin inhibitors are not indicated for use in children less than 2 years of age1-6.
1.1. Adults
Dosage recommendations for available calcineurin inhibitors are summarized in Table 11-4.
Patient profiles documenting prescriptions for greater than the equivalent of one 60 g tube of pimecrolimus cream or tacrolimus ointment per 30-day time period will be reviewed.
Table 1: Recommended Adult Dosages for Topical Calcineurin Inhibitors
Drug Name | Dosage Strength | Recommended Dose/Directions |
---|---|---|
pimecrolimus (Elidel®, generics) cream | 1% - 30 g, 60g, 100 g tube | apply thin layer of cream to affected area twice daily until symptoms resolve; use should be confined only to areas affected by atopic dermatitis; should not be used with occlusive dressings |
tacrolimus (Protopic®, generics) ointment |
|
apply thin layer of 0.03% or 0.1% ointment to affected area twice daily, rubbing in completely, and continue until symptoms resolve; use should be confined only to areas affected by atopic dermatitis; should not be used with occlusive dressings |
1.2. Pediatrics
A Black Box Warning states that the long-term safety of topical calcineurin inhibitors has not been established, and continuous long-term use is not recommended. While a causal relationship for the incidence of malignancy has not been established, topical calcineurin inhibitor use should be avoided in children younger than 2 years of age as the effect on the developing immune system is not known1-6.
Recommended pediatric dosages for topical calcineurin inhibitors are summarized in Table 21-4.
Table 2: Recommended Pediatric Dosages for Topical Calcineurin Inhibitors
Drug Name/Strength | Recommended Dose/Directions |
---|---|
pimecrolimus 1% cream | Children greater than 2 years of age: apply thin layer of cream to affected area twice daily until symptoms resolve; use should be confined only to areas affected by atopic dermatitis; should not be used with occlusive dressings |
tacrolimus 0.03% ointment tacrolimus 0.03% or 0.1% ointment |
|
2. Duration of Therapy
Continuous, long-term use of topical calcineurin inhibitors should be avoided, and use should be confined only to areas affected by atopic dermatitis. Patients whose symptoms do not resolve following six weeks of calcineurin inhibitor therapy should be re-evaluated by their health care provider to confirm the diagnosis of atopic dermatitis1-4.
Patients with a confirmed diagnosis of atopic dermatitis will require chronic, intermittent therapy for this condition. Patient profiles with either excessive prescriptions for calcineurin inhibitors during a 30-day time period (greater than 1 x 60 g tube) or without a definitive diagnosis of atopic dermatitis while prescribed a topical calcineurin inhibitor during a 90-day time period will be reviewed.
3. Duplicative Therapy
Concurrent administration of two or more topical calcineurin inhibitors does not provide enhanced therapeutic benefit and may result in additive adverse effects. Concurrent administration of pimecrolimus cream and tacrolimus ointment is not recommended and will be reviewed.
4. References
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed December 9th, 2021.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2017. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed December 9th, 2021.
- Pimecrolimus (Elidel®) package insert. Valeant -Bausch Health, September 2020.
- Tacrolimus (Protopic®) package insert. Leo Pharma Inc., April 2019.
- U.S. Department of Health and Human Services. U.S. Food and Drug Administration. FDA approves updated labeling with boxed warning and medication guide for two eczema drugs, Elidel and Protopic. (January 19, 2006) Available at: http://www.fda.gov/Drugs/DrugSafety/PostmarketDrugSafetyInformationforPatientsandProviders/ucm153941.htm. Accessed December 13th, 2021.
- Ring, Johannes, et al. "The US FDA 'black box' warning for topical calcineurin inhibitors: an ongoing controversy." Drug Safety, vol. 31, no. 3, Mar. 2008, pp. 185+. Gale OneFile: Health and Medicine, link.gale.com/apps/doc/A200506441/HRCA?u=txshracd2607&sid=bookmark-HRCA&xid=2bbaeb0b. Accessed 13 Dec. 2021.
Additional Uncited Resources
- Arellano FM, Wentworth CE, Arana A, et al. Risk of lymphoma following exposure to calcineurin inhibitors and topical steroids in patients with atopic dermatitis. J Invest Dermatol. 2007;127(4):808-16.
- Asgari MM, Tsai A, Avalos L, Sokil M, Quesenberry CP. Association between topical calcineurin inhibitor use and keratinocyte carcinoma risk among adults with atopic dermatitis. JAMA Dermatol. 2020;156(10):1066–1073.
- Berger TG, Duvic M, Van Voorhees AS, Frieden IJ. The use of topical calcineurin inhibitors in dermatology: safety concerns. Report of the American Academy of Dermatology Association Task Force. J Am Acad Dermatol. 2006;54:818-23.
- Hui RL, Lide W, Chan J, et al. Association between exposure to topical tacrolimus or pimecrolimus and cancers. Ann Pharmacother. 2009;43(12):1956-63.
- Kalavala M, Dohil MA. Calcineurin inhibitors in pediatric atopic dermatitis. A review of current evidence. Am J Clin Dermatol. 2011;12(1):15-24.
- Kang S, Lucky AW, Pariser D, et al, and the Tacrolimus Ointment Study Group. Long-term safety and efficacy of tacrolimus ointment for the treatment of atopic dermatitis in children. J Am Acad Dermatol. 2001;44(Suppl1):S58-64.
- Lam M, Zhu JW, Tadrous M, Drucker AM. Association between topical calcineurin inhibitor use and risk of cancer, including lymphoma, keratinocyte carcinoma, and melanoma: a systematic review and meta-analysis. JAMA Dermatol. 2021;157(5):549–558.
- Langley RG, Eichenfield LF, Lucky AW, et al. Sustained efficacy and safety of pimecrolimus cream 1% when used long-term (up to 26 weeks) to treat children with atopic dermatitis. Pediatr Dermatol. 2008;25(3):301-7.
- Luger TA, Lahfa M, Folster-Holst R, et al. Long-term safety and tolerability of pimecrolimus cream 1% and topical corticosteroids in adults with moderate to severe atopic dermatitis. J Dermatolog Treat. 2004;15:169-78.
- Paller AS, Fölster-Holst R, Chen SC, et al. No evidence of increased cancer incidence in children using topical tacrolimus for atopic dermatitis. J Am Acad Dermatol. 2020;83(2):375-381.
- Paller AS, Eichenfield LF, Kirsner RS, et al for the US Tacrolimus Ointment Study Group. Three times weekly tacrolimus ointment reduces relapse in stabilized atopic dermatitis: a new paradigm for use. Pediatrics. 2008;122(6):e1210-8.
- Papp K, Staab D, Harper J, et al. Effect of pimecrolimus cream 1% on the long-term course of pediatric atopic dermatitis. Int J Dermatol. 2004;43:978-83.
- Ruer-Mulard M, Aberer W, Gunstone A, et al. Twice-daily versus once-daily applications of pimecrolimus cream 1% for the prevention of disease relapse in pediatric patients with atopic dermatitis. Pediatr Dermatol. 2009;26(5):551-8.
- Qureshi AA, Fischer MA. Topical calcineurin inhibitors for atopic dermatitis: balancing clinical benefit and possible risks. Arch Dermatol. 2006;142:633-7.
- Reitamo S, Wollenberg A, Schopf E, et al. Safety and efficacy of 1 year of tacrolimus ointment monotherapy in adults with atopic dermatitis. The European Tacrolimus Ointment Study Group. Arch Dermatol. 2000;136:999-1006.
- Reitamo S, Van Leent EJ, Ho V, et al. Efficacy and safety of tacrolimus ointment compared with that of hydrocortisone acetate ointment in children with atopic dermatitis. J Allergy Clin Immunol. 2002;109:539-46.
- Reitamo S, Harper J, Bos JD, et al. 0.03% Tacrolimus ointment applied once or twice daily is more efficacious than 1% hydrocortisone acetate in children with moderate to severe atopic dermatitis: results of a randomized double-blind controlled trial. Br J Dermatol. 2004;150:554-62.
- Sigurgeirsson B, Boznanski A, Todd G, et al. Safety and efficacy of pimecrolimus in atopic dermatitis: a 5-year randomized trial. Pediatrics. 2015;135(4):597-606.
- Thaci D, Salgo R Malignancy concerns of topical calcineurin inhibitors for atopic dermatitis: facts and controversies. Clin Dermatol. 2010;28(1):52-6.
- Trammell S, Shakil A, Wilder L, Daugird A. Clinical inquiries. What is the role of tacrolimus and pimecrolimus in atopic dermatitis? J Fam Pract. 2005;54:714-6.
Tramadol
Tramadol - Index
Medications listed in the tables and non-FDA approved indications included in these retrospective criteria are not indicative of Texas Vendor Drug Program formulary coverage.
- Revision history
- Jan. 2022; Nov. 2019; Dec. 2017; Feb. 2016; June 2014; Sept. 2012; Jan. 2011; April 2008; Nov. 2003; Oct. 2002; Nov. 2001; Oct. 2000; Dec. 1999; Nov. 1998; Nov. 1997; Dec. 1996.
- Initially developed
- Nov. 1995
1. Dosage
Tramadol has a nationwide classification as a Schedule IV controlled substance as of August 18, 2014. Key factors contributing to this decision include its potential for abuse and dependence, as well as its link to emergency room visits and deaths related to overdoses1.
1.1. Adults
Tramadol is a centrally acting, opioid-type analgesic that acts as a mu-opioid receptor agonist and a weak inhibitor of serotonin and norepinephrine reuptake. The immediate-release (IR) formulation is FDA-approved for use in the management of acute or chronic moderate to moderately severe pain in adults2-4. Tramadol extended-release (ER) is FDA-approved for use in managing chronic moderate to moderately severe pain in patients requiring continuous pain management2,3,5. The tramadol/acetaminophen combination is FDA-approved for the acute (less than 5 days) management of acute pain2,3,6. Following a titration phase, recommended IR tramadol regimens for pain management include doses of 50 mg to 100 mg administered every 4 to 6 hours as needed. For tramadol ER, the recommended initial dose in tramadol IR-naïve patients is 100 mg once daily, titrated every five days in 100 mg increments until pain relief is achieved. For those patients already managed on tramadol IR, the 24-hour dose should be calculated, and the total daily tramadol ER dose should be rounded down to the closest 100 mg increment. The recommended dose for tramadol in combination with acetaminophen is 2 tablets every 4 to 6 hours as needed for pain relief2-6. Maximum recommended doses for tramadol alone and in combination with acetaminophen are summarized in Tables 1 and 2. Dosages exceeding these recommendations will be reviewed.
Drug Name | Dosage Forms/Strengths | Maximum Recommended Dose |
---|---|---|
tramadol immediate-release (Ultram®, generics) | 50 mg tablets |
400 mg/day, in divided doses every 4-6 hours elderly*: 300 mg/day, in divided doses every 4-6 hours |
tramadol extended-release (generics) | 100 mg, 200 mg, 300 mg tablets | 300 mg/day in single daily doses |
tramadol extended-release (ConZip®, generics) | 100 mg, 150 mg, 200 mg, 300 mg capsules | 300 mg/day in single daily doses |
Legend
- * = greater than 75 years of age
Drug Name | Dosage Forms/Strengths | Maximum Recommended Dose |
---|---|---|
tramadol/acetaminophen (Ultracet®, generics) | 37.5 mg/325 mg tablets | 300 mg/2600 mg per day (8 tablets per day), in divided doses every 4-6 hours |
1.1.1. Elderly Patients
Tramadol dosages exceeding 300 mg per day in elderly patients over 75 years of age are not recommended and will be reviewed. In controlled clinical trials, treatment-limiting adverse events were higher in patients over 75 years of age compared to those less than 65 years of age2-7.
1.1.2. Dosing in Renal and Hepatic Impairment
In patients with a creatinine clearance less than 30 mL/min, the recommended dosing interval for tramadol IR is every 12 hours and the maximum recommended tramadol dose is 200 mg per day. In patients with cirrhosis, the recommended tramadol IR dose is 50 mg every 12 hours. Tramadol ER should not be given to patients with a creatinine clearance less than 30 mL/min or those with severe hepatic impairment. The tramadol/acetaminophen combination should be dosed as 2 tablets every 12 hours in patients with a creatinine clearance less than 30 mL/min and should not be used in patients with hepatic impairment2-6,8.
1.2. Pediatrics
Tramadol IR is FDA-approved for use to manage acute and chronic moderate to moderately severe pain in adolescents 17 years of age and older. Following a titration phase, recommended IR tramadol regimens for pain management include doses of 50 mg to 100 mg administered every 4 to 6 hours as needed. Tramadol ER and tramadol/acetaminophen combination therapy are not FDA-approved for use in pediatric patients as safety and efficacy have not been established and the potential exists for an increased risk of fatal respiratory depression. Pediatric tramadol dosages are summarized in Table 3.
Drug Name | Dosage Forms/Strengths | Maximum Recommended Dose |
---|---|---|
tramadol immediate-release (Ultram®, generics) | 50 mg tablets |
Greater than 17 years of age: 400 mg/day, in divided doses every 4-6 hours |
2. Duration of Therapy
There is no basis for limiting the duration of tramadol therapy as tramadol is promoted for use in chronic pain (e.g., chronic musculoskeletal pain, cancer pain, osteoarthritis, diabetic neuropathy) as well as acute pain events (e.g., postoperative pain, dental extraction pain). However, cases of tramadol abuse and dependence have been reported, especially in patients with a history of substance abuse. Therefore, tramadol should be administered cautiously, if at all, to patients with a history of drug or alcohol abuse and/or dependence.
The tramadol/acetaminophen combination is indicated for use in the short-term management of acute pain and should be limited to five days or less of use. Patient profiles containing tramadol/acetaminophen prescriptions exceeding this treatment duration will be reviewed2-6, 9-23.
3. Duplicative Therapy
Adjunctive administration of multiple tramadol dosage forms may result in significant additive adverse events, including respiratory depression, seizures, and serotonin syndrome. Combined administration of multiple tramadol dosage forms is not recommended and will be reviewed.
Opioid analgesics may enhance the sedative effects as well as other central effects of tramadol. Therefore, the use of tramadol in conjunction with opioid analgesics is recommended cautiously. If tramadol is used concomitantly with another agent that acts upon the central nervous system, the tramadol dosage should be reduced.
Use of tramadol in conjunction with sedative/hypnotics in patients over 75 years of age will be reviewed as these patients may be more sensitive to the additive effects of this drug combination2-6.
4. Drug-Drug Interactions
Patient profiles will be assessed to identify those drug regimens which may result in clinically significant drug-drug interactions. Drug-drug interactions considered clinically relevant for tramadol are summarized in Table 4. Only those drug-drug interactions identified as clinical significance level 1 or those considered life-threatening which have not yet been classified will be reviewed2-6.
Target Drug | Interacting Drug | Interaction | Recommendation | Clinical Significance Level |
---|---|---|---|---|
tramadol | barbiturates | adjunctive use may result in respiratory depression, hypotension, profound sedation and potentially death due to additive CNS depression; potential as well for decreasing tramadol levels as barbiturates induce CYP3A4 and tramadol is CYP3A4 substrate | avoid use, if possible; if combined administration necessary, observe for respiratory depression and loss of tramadol analgesic effects | major (DrugReax) 2-major (CP) |
tramadol | carbamazepine (CBZ) | potential for reduced analgesic effect due to CBZ-associated CYP3A4 enzyme induction; potential for additive CNS depressant effects, increased seizure risk with concurrent therapy | concurrent use not recommended | major (DrugReax) 2-major (CP) |
tramadol | CYP inducers (e.g., phenytoin, rifampin) | potential for reduced tramadol analgesic efficacy as tramadol metabolized by CYP3A4, CYP2D6 | monitor for reduced analgesic effects; adjust dosages as necessary | moderate (DrugReax) 3-moderate (CP) |
tramadol | CYP2D6 inhibitors (e.g., amiodarone, propafenone, ritonavir) | potential for enhanced tramadol pharmacologic/ adverse effects as tramadol metabolized by CYP2D6 | monitor for enhanced analgesic effects, increased adverse effects (including seizures); adjust dosages as necessary | moderate (DrugReax) 3-moderate (CP) |
tramadol | CYP3A4 inhibitors (e.g., amiodarone, erythromycin, ritonavir) | potential for enhanced tramadol pharmacologic/ adverse effects as tramadol metabolized by CYP3A4 | monitor for enhanced analgesic effects, increased adverse effects (including seizures); adjust dosages as necessary | moderate (DrugReax) 3-moderate (CP) |
tramadol | MAOIs+/MAOI-like compounds (e.g., phenelzine, selegiline, rasagiline, linezolid) | potential for additive effects on serotonin and norepinephrine reuptake inhibition; increased risk for seizures, hypertensive reactions, serotonin syndrome (e.g., nausea, vomiting, hypertension, hyperthermia, cardiovascular collapse) | concurrent administration or prescribing within 14 days of MAOI discontinuation contraindicated | contraindicated, major (DrugReax) 1-severe, 2-major (CP) |
tramadol | neuroleptics (e.g., thioridazine, risperidone) | increased seizure risk (mechanism unknown), and potential for increased CNS, respiratory depression | avoid, if possible, in patients with underlying seizure disorders; otherwise, use cautiously together | major (DrugReax) 2-major (CP) |
tramadol | opioid analgesics | increased seizure risk | avoid, if possible, in patients with underlying seizure disorders; otherwise, use cautiously together | 2-major (CP) |
tramadol | serotonergic drugs (e.g., SSRIs/ SNRIs, milnacipran) | increased seizure risk, increased risk of serotonin syndrome (e.g., nausea/vomiting, hypertension, hyperthermia, cardiovascular collapse) due to additive increases in serotonin concentrations | avoid, if possible, in patients with underlying seizure disorders; otherwise, use cautiously together | major (DrugReax) 2-major (CP) |
tramadol | TCAs^ (e.g., imipramine, cyclobenzaprine) | increased seizure risk (TCAs lower seizure threshold), increased risk of serotonin syndrome (e.g., nausea/vomiting, hypertension, hyperthermia, cardiovascular collapse) as both compounds inhibit serotonin/norepinephrine reuptake | avoid, if possible, in patients with underlying seizure disorders; otherwise, use cautiously together | major (DrugReax) 3-moderate (CP) |
tramadol | warfarin | increased prothrombin time with increased bleeding risk; mechanism unknown | closely monitor for INR changes, bleeding; adjust doses as necessary | moderate (DrugReax) 2-major (CP) |
Legend:
- * CP = Clinical Pharmacology
- +MAOI = monoamine oxidase inhibitor
- ^TCA = tricyclic antidepressant
5. References
- Drug Enforcement Administration. Federal Register Volume 79, Issue 127 (July 2, 2014). Available at https://www.gpo.gov/fdsys/search/pagedetails.action?st=tramadol&granuleId=2014-15548&packageId=FR-2014-07-02. Accessed December 9th, 2021.
- DRUGDEX® System (electronic version). Truven Health Analytics, Greenwood Village, Colorado, USA. Available at: http://www.micromedexsolutions.com.libproxy.uthscsa.edu/. Accessed December 9th, 2021.
- Clinical Pharmacology [database online]. Tampa, FL: Gold Standard, Inc.; 2017. Available at: http://www.clinicalpharmacology-ip.com.ezproxy.lib.utexas.edu/. Accessed December 9th, 2021.
- Tramadol tablets (Ultram®) Package Insert. Janssen Pharmaceuticals, September 2021.
- Tramadol extended-release capsules (ConZip®) package insert. Vertical Pharmaceuticals, Inc., September 2021.
- Tramadol/acetaminophen tablets (Ultracet®) package insert. Janssen Pharmaceuticals, September 2021.
- Vorsanger G, Xiang J, Jordan D, Farrell J. Post hoc analysis of a randomized, double-blind, placebo-controlled efficacy and tolerability study of tramadol extended release for the treatment of osteoarthritis pain in geriatric patients. Clin Ther. 2007;29 (Suppl):2520-35.
- Barkin RL. Extended-release tramadol (ULTRAM® ER): A pharmacotherapeutic, pharmacokinetic, and pharmacodynamic focus on effectiveness and safety in patients with chronic/persistent pain. Am J Ther. 2008;15:157-66.
- Cepeda MS, Camargo F, Zea C, Valencia L. Tramadol for osteoarthritis: a systematic review and meta-analysis. J Rheumatol. 2007;34:543-55.
- Leppert W, Luczak J. The role of tramadol in cancer pain treatment--a review. Support Care Cancer. 2005;13:5-17.
- Leppert W. Tramadol as an analgesic for mild to moderate cancer pain. Pharmacol Rep. 2009;61:978-92.
- Hochbert MC, Altman RD, April KT, et al. American College of Rheumatology 2012 recommendations for the use of nonpharmacologic and pharmacologic therapies in osteoarthritis of the hand, hip, and knee. Arthritis Care Res. 2012;64(4):455-74.
- Kolasinski SL, Neogi T, Hochberg MC, et al. 2019 American College of Rheumatology/Arthritis Foundation guideline for the management of osteoarthritis of the hand, hip, and knee. Arthritis Care Res (Hoboken). 2020;72(2):149-162.
- Chou R, Huffman LH. Medications for acute and chronic low back pain: a review of the evidence for an American Pain Society/American College of Physicians clinical practice guideline. Ann Intern Med. 2007;147:505-14.
- Hair PI. Curran MP. Keam SJ. Tramadol extended-release tablets. Drugs. 2006;66:2017-27; discussion 2028-30.
- Yates WR, Nguyen MH, Warnock JK. Tramadol dependence with no history of substance abuse. Am J Psychiatry. 2001;158:964.
- Miotto K, Cho AK, Khalil MA, et al. Trends in tramadol: pharmacology, metabolism, and misuse. Anesth Analg 2017;124:44–51.
- Schug SA. Combination analgesia in 2005 - a rational approach: focus on paracetamol-tramadol. Clin Rheumatol. 2006;25( Suppl 1):S16-21.
- Mullican WS, Lacy JR, and the TRAMAP-ANAG-006 Study Group. Tramadol/acetaminophen combination tablets and codeine/acetaminophen combination capsules for the management of chronic pain: a comparative trial. Clin Ther. 2001;23:1429-45.
- Rodriguez RF, Castillo JM, Castillo MP, et al. Hydrocodone/acetaminophen and tramadol chlorhydrate combination tablets for the management of chronic cancer pain: a double-blind comparative trial. Clin J Pain. 2008;24:1-4.
- Dworkin RH, O’Connor AB, Audette J, et al. Recommendations for the pharmacological management of neuropathic pain: an overview and literature update. Mayo Clin Proc. 2010;85(3 Suppl):S3-14.
- Pop-Busui R, Boulton AJM, Feldman EL, et al. Diabetic neuropathy: A position statement by the American Diabetes Association. Diabetes Care. 2017;40:136-54.
C-5. Revision History
Status | Date | Description |
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Revision | Oct. 13, 2023 | Approved criteria:
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Revision | July 21, 2023 | Approved criteria:
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Revision | April 28, 2023 | Approved criteria:
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Revision | Jan. 20, 2023 | Approved criteria:
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Revision | Oct. 21, 2022 | Approved criteria:
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Revision | July 21, 2022 | Approved criteria:
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Revision | April 22, 2022 | Approved criteria:
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Revision | Jan. 21, 2022 | Approved criteria:
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Revision | Oct. 22, 2021 | Approved criteria:
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Revision | Oct. 20, 2021 | Added July 23, 2021, approved criteria:
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Revision | Oct. 20, 2021 | Added April 23, 2021, approved criteria:
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Revision | Oct. 20, 2021 | Added Jan. 22, 2021, approved criteria:
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Revision | Oct. 20, 2021 | Added July 1, 2021, Compendia update |
Baseline | Oct. 20, 2021 | Initial publication of content as Retrospective Drug Use Criteria Handbook |