title: Efficacy and safety of norfloxacin 800 mg once-daily versus norfloxacin 400 mg twice-daily in the treatment of uncomplicated urinary tract infections in women: a double-blind, randomized clinical trial.
abstract: Norfloxacin 400 mg twice-a-day has proven to be effective and safe in the treatment of uncomplicated urinary tract infections (UTI). Since previous pharmacokinetic studies demonstrate the feasibility of using norfloxacin 800 mg once-daily, and this scheme is assumed to improve patient compliance, a double-blind randomized clinical trial was performed to compare the efficacy and safety of norfloxacin 800 mg once-daily (Group A) versus norfloxacin 400 mg twice-daily (Group B) in the treatment of adult female UTI for a 7-10 day period. Eighty-six adult women with clinical symptoms and urinary sediment signs suggestive of UTI were enrolled. In Group A, treatment was clinically assessed as effective in 95.3% and bacteriologically effective in 92.0% of the patients. In Group B, clinical and bacteriological efficacy was 100% and 95.5%, respectively. Differences between groups are not statistically significant. Adverse events were reported by 14.0% of patients in Group A and 9.6% in Group B (difference not statistically significant). There was one withdrawal due to dizziness. In this study, norfloxacin 800 mg once-a-day was as effective and safe as norfloxacin 400 mg twice-a-day in the treatment of uncomplicated urinary tract infections in women.
authors.affiliation: Serviços de Medicina, Hospital São João-Porto, Portugal.
authors.forename: F L
authors.initials: FL
authors.lastname: Pimentel
authors.forename: A
authors.initials: A
authors.lastname: Dolgner
authors.forename: J
authors.initials: J
authors.lastname: Guimarães
authors.forename: M
authors.initials: M
authors.lastname: Quintas
authors.forename: J
authors.initials: J
authors.lastname: Mário-Reis
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000890:Anti-Infective Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D016983:Enterococcus / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects; D005260:Female; D006801:Humans; D008875:Middle Aged; D009643:Norfloxacin / Q000008:administration & dosage / Q000627:therapeutic use*; D011513:Proteus mirabilis / Q000187:drug effects; D013210:Staphylococcus / Q000187:drug effects; D016896:Treatment Outcome; D014552:Urinary Tract Infections / Q000188:drug therapy* / Q000382:microbiology
chemical_list: D000890:Anti-Infective Agents; D009643:Norfloxacin