phenobarbital will reduce the level or result of diazepam buccal by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Watch. Powerful or moderate CYP3A4 inducers may well raise level of diazepam elimination; as a result, efficacy of diazepam might be decreased.Keep track of Intently (one)somatropin will lessen the extent or effect