Norfloxacin
- TRADE NAMES: Barazan; Chibroxin (Merck); Chibroxine; Chibroxol; Lexinor; Noroxin (Merck); Oranor; Utinor; Zoroxin
- INDICATIONS: Various urinary tract infections caused by susceptible organisms, conjunctivitis
- CLASS: Antibiotic, Antibiotic; fluoroquinolone, Antimicrobial, CYP3A4 inhibitor
- HALF-LIFE: 3–4 hours
Aminophylline, Amiodarone, Antacids, Arsenic, Artemether/Lumefantrine, Bepridil, Bretylium, Caffeine, Ciprofibrate, Clozapine, Cyclosporine, Dairy products, Didanosine, Disopyramide, Erythromycin, Glyburide, Lanthanum, Mycophenolate, Nitrofurantoin, NSAIDs, Oral iron, Oral typhoid vaccine, Oxtriphylline, Phenothiazines, Probenecid, Procainamide, Quinidine, Ropinirole, Sotalol, Strontium Ranelate, Sucralfate, Tacrine, Tamoxifen, Tizanidine, Tricyclic antidepressants, Warfarin, Zinc, Zolmitriptan
PREGNANCY CATEGORY: C
Fluoroquinolones are associated with an increased risk of tendinitis and tendon rupture in all ages. This risk is further increased in older patients usually over 60 years of age, in patients taking corticosteroid drugs, and in patients with kidney, heart or lung transplants.
Fluoroquinolones may exacerbate muscle weakness in persons with myasthenia gravis.
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Page last updated 08/08/2022
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Incidence 
- <1%
- 1-5%
- 5-10%
- 10-15%
- 15-20%
- 20-30%
- >30%
Seriousness
- Hospitalization possible
- Life threatening
- Fatal
Warnings in other populations
- Breast feeding
- Geriatric
- Pediatric
