Vilitra 20 is a medication used to treat erectile dysfunction (ED). Its active ingredient is vardenafil, which works by increasing blood flow to the penis, helping achieve and maintain an erection when sexually aroused. The effects typically begin within 30 to 60 minutes after taking the pill, and it can last for several hours. It should not be taken with nitrates or certain other medications, as this can cause serious side effects. Alcohol consumption may also affect its efficacy.