Pharmacokinetics of cefroxadin (CGP 9000) in man

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Abstract
The pharmacokinetics of cefroxadin have been studied after the administration of single oral and intravenous doses to healthy volunteers. Cefroxadin was assayed by HPLC. The kinetics in plasma following i.v. administration were described by using a three-compartment model. An additional disposition phase was observed following oral administration that could not be detected after the low i.v. dose. The terminal half-life was 1.03 h. The apparent volume of distribution at the steady state was consistent with a diffusion of the antibiotic in all extracellular fluids. The AUCafter oral administration was linearly related to the dose. The urinary excretion amounted to 95% of the dose with virtually complete absorption of orally administered drug.