pentobarbital will minimize the extent or result of armodafinil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Slight/Importance Not known.pentobarbital will lessen the extent or result of tamoxifen by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Check.fentanyl transdermal and pentobarbital both improve sedation. Pr