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 meloxicam by affecting hepatic enzyme CYP2C9/10 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of osilodrostat by affecting hepatic/intestinal enz... https://singnalsocial.com/story5283124/nuovo-step-by-step-map-per-pentobarbital-brand-name