Pharmacokinetics of chlortetracycline potentiation with citric acid in the chicken - PubMed (original) (raw)
. 1983 Sep;44(9):1718-21.
- PMID: 6625325
Pharmacokinetics of chlortetracycline potentiation with citric acid in the chicken
R A Pollet et al. Am J Vet Res. 1983 Sep.
Abstract
Serum concentrations of chlortetracycline (CTC) in healthy chickens were determined for the 24-hour period after they were given CTC (with and without citric acid) as an oral (25 mg/kg) or IV (0.9 mg/kg) dose. The oral time-course drug data were fitted adequately by a 2-compartment pharmacokinetic model with absorption. The resulting absorption rate constant (Ka) for the birds orally given CTC with citric acid was nearly equal to that for the birds given CTC alone. Although the uptake of orally administered CTC was rapid, only a small fraction of the dose was absorbed. The administration of citric acid-CTC significantly increased the mean serum concentration of CTC and the fraction of the dose absorbed. The citric acid-CTC mixture also produced significantly higher elimination (Kel) and distribution (K12) rate constants for CTC.
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