pentobarbital will lessen the level or result of fostemsavir by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated.pentobarbital will decrease the extent or outcome of bexarotene by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Observe.pentobarbital will lessen the extent or result of hydrocortisone by influ