DISPOSITION OF FENBENDAZOLE IN THE GOAT

  • 1 May 1987
    • journal article
    • research article
    • Vol. 48  (5) , 811-815
Abstract
The disposition of fenbendazole was studied in goats after oral or IV administration. Plasma concentration vs time profiles were determined for fenbendazole and all of its metabolites. The total excretion of the drug and its metabolites in urine and feces was also measured for 6 days. A biliary cannula was inserted in 1 goat to study the excretion of fenbendazole and its metabolites into the bile. Fenbendazole was converted to its sulfoxide (oxfendazole), and the sulfone, primary amine, and p-hydroxylated metabolites. The active metabolite, oxfendazole, appeared in plasma, but only trace amounts were found in feces or urine. The major excretory metabolite was p-hydroxyfenbendazole.

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