Butabarbital will minimize the extent or impact of doravirine by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. butabarbital will reduce the level or effect of levamlodipine by influencing hepatic/intestinal enzyme CYP3A4 metabolism. butabarbital will decrease the level or result of eltrombopag by influencing hepatic enzyme CYP2C9/ten metabolism. Use Warning... https://colettem221iqv8.wikinewspaper.com/user