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JOURNAL ARTICLE

Influence of oral co-administration of a preparation containing calcium and magnesium and food on enrofloxacin pharmacokinetics

Hubert Ziółkowski, Jerzy J Jaroszewski, Tomasz Maślanka, Tomasz Grabowski, Kinga Katolik, Justyna Pawęska, Małgorzata Siemianowska, Agnieszka Jasiecka, Włodzimierz Markiewicz, Anna Spodniewska
Research in Veterinary Science 2014, 97 (1): 99-104
24875062
The objective of this study has been to determine the influence of food and ions on the pharmacokinetics of enrofloxacin (ENRO) in turkeys, administered per os at a dose of 10 mg/kg of body weight (b.w.). Co-administration of ENRO with ions or with food significantly retarded its absorption, and the interaction was more pronounced when the drug was given together with food. The bioavailability of ENRO was 65.78 ± 7.81% and 47.99 ± 9.48% with ions and food, respectively. The maximum concentration (Cmax) in plasma of animals exposed to ions reached 0.87 ± 0.26 μg/ml in a tmax of 2.07 ± 0.76 h; in animals which were fed while medicated, the analogous parameters were 0.36 ± 0.13 μg/ml and 8.06 ± 3.08 h. The PK/PD analysis demonstrated that a decrease in the concentration of ENRO in turkeys' blood due to the interaction with ions or food might impair the drug's clinical efficacy toward some pathogenic microorganisms in turkeys if a routine dose of 10 mg ENRO/kg b.w. is administered.

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