Butabarbital will reduce the extent or effect of doravirine by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. butabarbital will lessen the extent or impact of conivaptan by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Observe. butabarbital will minimize the extent or impact of prednisolone by affecting hepatic/intestinal enzyme CYP3A4 m... https://edwards536ujh3.eveowiki.com/user