Pentobarbital will decrease the level or impact of zaleplon by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Importance Unknown. pentobarbital will lower the extent or effect of tamoxifen by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Check. pentobarbital will minimize the extent or effect of dutasteride by impacting hepatic/intestinal enzyme CYP3... https://chancevjxjy.thenerdsblog.com/36696809/a-review-of-side-effects-of-nembutal