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 fosamprenavir by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital decreases effects of sufentanil SL by affecting hepatic/intestinal enzyme CYP3A4... https://bookmarkahref.com/story20302867/5-semplici-tecniche-per-pentobarbital-natrium