Pentobarbital will decrease the level or influence of nitrendipine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Slight/Importance Not known. pentobarbital will minimize the extent or outcome of tipranavir by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Check. pentobarbital will decrease the extent or influence of tacrolimus by impacting hepatic/intes... https://damienxyzbb.wizzardsblog.com/31023233/top-latest-five-what-type-of-drug-is-nembutal-urban-news