Pentobarbital will decrease the level or effect of prednisone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital will decrease the level or effect of levoketoconazole by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of bexarotene by affecting hepatic/intestina... https://bookmarkgenius.com/story20178724/tutto-ci%C3%B2-che-riguarda-what-is-nembutal-pentobarbital