pentobarbital will decrease the extent or impact of voriconazole by influencing hepatic enzyme CYP2C9/10 metabolism. Minimal/Importance Unidentified.pentobarbital will minimize the level or influence of tipranavir by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch.Keep an eye on Carefully (two)pentobarbital will lessen the