pentobarbital will minimize the extent or result of etravirine by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Observe.pentobarbital will decrease the level or impact of elbasvir/grazoprevir by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. The therapeutic effect of elbasvir/grazoprevir could possibl