Pentobarbital will lower the level or outcome of alfentanil by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Importance Unknown. pentobarbital will minimize the extent or effect of isradipine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Small/Significance Unfamiliar. pentobarbital will lower the extent or result of nimodipine by influencing hepatic/intestin... https://rudyp017jwg9.sasugawiki.com/user