Butabarbital will lower the level or result of doravirine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. butabarbital will lessen the extent or result of levamlodipine by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Teniposide: Barbiturates might decrease the serum concentration of Teniposide. Management: Take into account alternate options to mix... https://andyp071vxt7.cosmicwiki.com/user