pentobarbital will minimize the extent or impact of mifepristone by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Check. CYP3A4 inducers haven't been studied, coadministration not suggested by makerpentobarbital will lessen the extent or result of alprazolam by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/