Observe Intently (1)oxcarbazepine will lessen the extent or effect of diazepam by affecting hepatic/intestinal enzyme CYP3A4 metabolism.nevirapine will reduce the level or impact of diazepam by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Observe.If atropine, scopolamine or other premedications preferred, they need to be admin