Pentobarbital will decrease the level or effect of vinblastine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of amiodarone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital will decrease the level or effect of aripiprazole by affecting hepatic/intestinal e... https://infopagex.com/story5698897/poco-conosciuto-fatti-circa-pentobarbital-natrium