The medicine Vilitra 20, is intended for men between ages 18 and 65 to achieve an erection. Vilitra 20 mg commonly known as Vardenafil, the medicine works by increasing erectile function. The primary ingredient of the drug is Vardenafil hydrochloride. This is accomplished by increasing the flow of blood to the stimulation site, the penis, and is useful in treating impotence and erectile dysfunction. Before engaging in sexual activity, it is recommended that you take Vilitra 20 (Vardenafil 20 mg) 30 to 60 minutes in advance. The drug begins to work after about 30 minutes.