1.1. Adults

Maximum recommended adult daily doses for fluoroquinolones are summarized in Table 1. Prescribed dosages exceeding these recommendations will be reviewed.

Table 1. Adult Oral Fluoroquinolone Maximum Dosage Recommendations1-9
Drug NameDosage Form/StrengthTreatment IndicationMaximum Recommended Dosage 
ciprofloxacin (Cipro, generics)immediate-release (IR)#: 250 mg, 500 mg, 750 mg tablets; 250 mg/5 mL, 500 mg/5 mL suspensionacute sinusitis500 mg twice daily
  bone and joint infections750 mg twice daily
  chronic bacterial prostatitis500 mg twice daily
  complicated intra-abdominal infections (in combination with metronidazole)500 mg twice daily
  complicated, uncomplicated skin/skin structure infections750 mg twice daily
  infectious diarrhea500 mg twice daily
  inhalational anthrax (post-exposure)500 mg twice daily
  lower respiratory tract infections750 mg twice daily
  moderate, complicated urinary tract infection (UTI)500 mg twice daily
  plague1500 mg/day
  typhoid fever500 mg twice daily
  uncomplicated cervical, urethral gonococcal infections*250 mg as single dose
  Uncomplicated UTI250 mg twice daily
levofloxacin (generics)250 mg, 500 mg, 750 mg tablets, 25 mg/mL solutionacute bacterial sinusitis750 mg once daily
  acute pyelonephritis750 mg once daily
  chronic bacterial prostatitis500 mg once daily
  chronic bronchitis (acute bacterial exacerbation)500 mg once daily
  complicated skin/skin structure infections750 mg once daily
  inhalational anthrax500 mg once daily
  mild/moderate complicated UTI750 mg once daily
  nosocomial pneumonia750 mg/day
  plague or plague prophylaxis500 mg once daily
  uncomplicated skin/skin structure infections500 mg once daily
  uncomplicated UTI250 mg once daily
moxifloxacin (Avelox, generics)400 mg tabletsacute bacterial sinusitis400 mg once/day
  chronic bronchitis (acute bacterial exacerbation)400 mg once/day
  CAP400 mg once/day
  complicated intra-abdominal infections400 mg once/day
  complicated skin/skin structure infections400 mg once/day
  plague or plague prophylaxis400 mg once/day
  uncomplicated skin/skin structure infections400 mg once/day
ofloxacin (generics)200 mg, 300 mg, 400 mg tabletsacute 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
  CAP400 mg twice daily
  complicated UTI200 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 trachomatis300 mg twice daily
  prostatitis due to E. coli300 mg twice daily
  uncomplicated cystitis due to E. coli or K. pneumoniae200 mg twice daily
  uncomplicated cystitis due to other organisms200 mg twice daily
  uncomplicated skin and skin structure infections400 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; levofloxacin or moxifloxacin 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.

Table 2. Fluoroquinolone Recommended Dosage Guidelines in Pediatric Patients1-3,7
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