title: Bioequivalence evaluation of norfloxacin 400 mg tablets (Uroxin and Noroxin) in healthy human volunteers.
abstract: A bioequivalence study of two oral formulations of 400 mg norfloxacin was carried out in 18 healthy volunteers according to a single dose, two-sequence, cross-over randomized design at College of Pharmacy, King Saud University, Riyadh, Saudi Arabia, jointly with King Khalid University Hospital. The two formulations were: Uroxin (Julphar, United Arab Emirates) as test and Noroxin (Merck Sharpe & Dohme, BV, Netherlands). Both test and reference formulations were administered to each subject after an overnight fasting on 2 treatment days separated by 1 week wash-out period. After dosing, serial blood samples were collected for a period of 24 h. Plasma harvested from blood, was analysed for norfloxacin by a sensitive, reproducible and accurate HPLC method. Various pharmacokinetic parameters including AUC(0-t), AUC(0-infinity), C(max), T(max), T(1/2), and K(el) were determined from plasma concentrations for both the formulations and found to be in good agreement with reported values. AUC(0-t), AUC(0-infinity), and C(max) were tested for bioequivalence after log-transformation of data. No significant difference was found based on ANOVA; 90% confidence interval for test/reference ratio of these parameters were found within a bioequivalence acceptance range of 80-125%. Based on these statistical inferences, it was concluded that Uroxin is bioequivalent to Noroxin.
authors.affiliation: College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
authors.forename: K
authors.initials: K
authors.lastname: Al-Rashood
authors.forename: K
authors.initials: K
authors.lastname: Al-Khamis
authors.forename: Y
authors.initials: Y
authors.lastname: El-Sayed
authors.forename: S
authors.initials: S
authors.lastname: Al-Bella
authors.forename: M
authors.initials: M
authors.lastname: Al-Yamani
authors.forename: S
authors.initials: S
authors.lastname: Alam
authors.forename: R
authors.initials: R
authors.lastname: Dham
mesh_terms: D000328:Adult; D000890:Anti-Infective Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000097:blood / Q000493:pharmacokinetics*; D019540:Area Under Curve; D002626:Chemistry, Pharmaceutical; D018592:Cross-Over Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009643:Norfloxacin / Q000008:administration & dosage / Q000009:adverse effects / Q000097:blood / Q000493:pharmacokinetics*; D013607:Tablets; D013810:Therapeutic Equivalency
chemical_list: D000890:Anti-Infective Agents; D013607:Tablets; D009643:Norfloxacin