Effects of Other Prescription drugs on VIAGRA Sildenafil metabolism is principally mediated by CYP3A4 (big route) and CYP2C9 (slight route). Consequently, inhibitors of such isoenzymes could cut down sildenafil clearance and inducers of these isoenzymes may well increase sildenafil clearance.This document does not contain all achievable Unwanted ef… Read More