pentobarbital will minimize the level or influence of pantoprazole by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Insignificant/Significance Unfamiliar.pentobarbital will lower the level or effect of fentanyl transmucosal by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Check Carefully. Coadministration of fentany