Pentobarbital will decrease the level or effect of bexarotene by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Monitor. pentobarbital will lower the level or effect of phenytoin by influencing hepatic enzyme CYP2C9/10 metabolism. Use Warning/Check. pentobarbital will decrease the level or outcome of vardenafil by impacting hepatic/intestinal enzyme CYP3A4 metaboli... https://erniej121oah1.webdesign96.com/profile