Pentobarbital will decrease the level or outcome of indinavir by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch. pentobarbital will lessen the level or influence of tamoxifen by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Keep track of. fentanyl transdermal and pentobarbital both maximize sedation. Steer clear of or Use Alternate Drug. https://edwinriwht.dailyblogzz.com/31574732/indicators-on-side-effects-of-nembutal-you-should-know