EN
This study was aimed at the comparison of the pharmacokinetics of 4 different parenteral commercial specialties containing enrofloxacin as an active substance. For this purpose, 35 2-3-years-old, male mix-breed dogs were used. Five groups including 7 animals each were established. Each animal included in the first group (group 1) was intravenously administered a reference standard for enrofloxacin at a dose of 5 mg/kg body weight. Groups 2, 3, 4 and 5 were administered different parenteral preparations containing enrofloxacin at the same dose but intramuscularly. Subsequent to drug administration, blood samples were collected from all of the groups at 0.083, 0.25, 0.50, 1, 2, 4, 6, 12, 24, and 36 hours. The blood samples were centrifuged for the separation of sera. Enrofloxacin analyses in serum samples were performed by means of the spectrofluorometric method. Upon evaluation based on pharmacokinetic distribution and according to the findings obtained, a statistically significant difference was determined in other groups with respect to A₁, α, t1/2α, V₁ ve k₁₀ when compared to administration by route IV. This difference was demonstrated to be in the form of a decrease for A₁*, α and k₁₀, and increase for t1/2α and V₁, when compared to administration by route IV. Excluding t1/2α, statistically significant differences were not observed between all the commercial preparations (groups 2-5).