Watch Carefully (one)belzutifan will decrease the level or impact of diazepam by influencing hepatic/intestinal enzyme CYP3A4 metabolism.lumefantrine will lessen the extent or effect of diazepam by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Check.oxcarbazepine will decrease the extent or outcome of diazepam by influencing he