fosaprepitant will boost the amount or effect of diazepam by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Observe.diazepam will increase the level or effect of tazemetostat by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Keep track of.What to do When you give VALTOCO if the seizures don't cease or You wil