Pentobarbital will decrease the level or effect of losartan by affecting hepatic enzyme CYP2C9/10 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of loratadine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital decreases effects of sufentanil SL by affecting hepatic/intestinal enzyme CYP3A4 metabolism. M... https://thekiwisocial.com/story5827788/una-chiave-semplice-per-pentobarbital-for-cats-unveiled