pentobarbital will reduce the level or impact of etravirine by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Keep an eye on.pentobarbital will decrease the extent or result of lonafarnib by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. Lonafarnib is really a sensitive CYP3A4 substrate. Coadministration