fosaprepitant will enhance the stage or influence of diazepam by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch.iloperidone increases amounts of diazepam by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Iloperidone is a time-dependent CYP3A inhibitor and may bring on improved plasma amounts of