pentobarbital will reduce the extent or outcome of etravirine by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.pentobarbital will decrease the level or effect of bexarotene by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Keep an eye on.pentobarbital will increase toxicity of ifosfamide by impacting