phenobarbital will decrease the extent or result of diazepam buccal by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Observe. Robust or moderate CYP3A4 inducers might increase level of diazepam elimination; thus, efficacy of diazepam may very well be decreased.Stay away from; coadministration with CYP3A inducers may end in lowe