pentobarbital will lessen the extent or impact of diazepam buccal by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Watch. Sturdy or average CYP3A4 inducers may perhaps enhance fee of diazepam elimination; therefore, efficacy of diazepam might be lowered.pentobarbital will lessen the extent or effect of nicardipine by affecting