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Am J Vet Res. 1993 Apr;54(4):576-9.

Pharmacokinetics of cefotaxime in neonatal pony foals.

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  • 1Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Kennett Square 19348.


Serum concentrations of cefotaxime and desacetylcefotaxime were measured in 1-week-old pony foals after IV administration of a single dose of cefotaxime. The cefotaxime disposition data conformed to a two-compartment model with elimination half-life of 0.60 hour. The combined cefotaxime and desacetylcefotaxime data was best described by a four-compartment model. The apparent half-life describing the disappearance of desacetylcefotaxime was 1.69 hours. Dosage of 40 mg/kg of body weight given IV every 4 to 6 hours for neonatal foals with gram-negative septicemia and every 2 hours for foals with meningitis is recommended for further study.

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