1.1. Adults

The maximum adult recommended doses for available psychostimulants used in ADD/ADHD management are summarized in Table 1.

Table 1. Maximum Recommended Adult Dosages for Stimulant ADHD Medications1-26
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
Table 2. Maximum Recommended Adult Dosages for Non-Stimulant ADHD Medications: Selective Norepinephrine Reuptake Inhibitors1,2,27,28
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
Table 3. Maximum Recommended Adult Dosages for Non-Stimulant ADHD Medications: Selective Alpha2A-Adrenergic Receptor Agonists1,2,29
Drug Name Dosage Form/Strength Maximum Recommended Dosage 
guanfacine (Intuniv®, generics) 1 mg, 2 mg, 3 mg, 4 mg ER tablets 7 mg/day