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 quinine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of levonorgestrel oral/ethinylestradiol/ferrous bisglyci... https://bookmarksparkle.com/story20430248/un-imparziale-vista-pentobarbital-icp