5 ESSENTIAL ELEMENTS FOR VIAGRA

Effects of Other Drugs on VIAGRA Sildenafil metabolism is principally mediated by CYP3A4 (important route) and CYP2C9 (minimal route). For that reason, inhibitors of those isoenzymes could reduce sildenafil clearance and inducers of such isoenzymes may perhaps raise sildenafil clearance.Sildenafil works by blocking an enzyme in the human body named