Vilitra 40 drug is used to treat impotence. Vardenafil works by increasing the blood flow to the male penis and maintaining it by giving strength to the erection. This medicine can be taken by people above 18 years of age. After taking these pills you will be able to enjoy sex with your partner for 4-5 hours. After taking this medicine, you should not consume any alcoholic beverages. Take this medicine with sufficient amount of water and do not chew or crush the medicine.