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“Treatment of the animals with repeated doses of phenobarbitalin vivo caused an enhanced rate of formation of 5α-androstane-3,17-dione and of polar metabolites from this steroid.”
Naunyn-Schmiedebergs Archiv für Pharmakologie • 2005 | View Paper
“ Phenobarbital administration to rabbits resulted in 49-fold and 23-fold increases in the transformation of androst-4-ene-3,17-dione and dehydroepiandrosterone, respectively, into estriol by lymphocytes.”
Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme • 1982 | View Paper
“For instance, the administration of phenobarbital or chlorcyclizine to rats increases several fold the ability of liver microsomes to hydroxylate testosterone and Δ4-androstene-3,17-dione.”