Probenecid disposition by parallel Michaelis-Menten and dose-dependent pseudo-first-order processes.

Abstract

Re-evaluation of published data on the urinary excretion of probenecid [4-(dipropylamino)sulfonylbenzoic acid, 1] and its metabolites as a function of orally administered dose has revealed that the elimination process is comprised of five parallel pathways. Excretion of the major metabolite, the acyl glucuronide 2 (35-45% of dose), follows Michaelis-Menten… (More)

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