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 buspirone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital will decrease the level or effect of tinidazole by affecting hepatic/intestinal enzy... https://thekiwisocial.com/story5827557/non-ci-sono-altre-pentobarbital-hond-un-mistero