Pentobarbital will decrease the level or effect of aprepitant by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital will decrease the level or effect of loratadine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital will decrease the level or effect of levonorgestrel oral/ethinylestradiol/ferrous bisglycin... https://hypebookmarking.com/story20086023/i-pentobarbital-icp-diaries