Pentobarbital will decrease the level or effect of ketoconazole by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of buspirone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital will decrease the level or effect of levonorgestrel oral/ethinylestradiol/ferrous b... https://bookmarkpagerank.com/story20327463/un-arma-segreta-per-pentobarbital-de-sodium