Vilitra 20 is usually prescribed for the treatment of early stage erectile dysfunction. It helps you get and keep an erection during s*x. It is structurally so similar to cGMP that the PDE-5 enzyme binds to vardenafil instead of cGMP. An increased concentration of cGMP in the blood will increase blood flow to the p*nis and help you achieve/maintain a firm erection during s*xual intercourse.Vilitra 60 will not work without s*xual stimulation.