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 vincristine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of buprenorphine buccal by affecting hepa... https://bookmarkingfeed.com/story20213976/nuovo-step-by-step-map-per-pentobarbital-brand-name