For the treatment of erectile dysfunction, Vidalista 40 mg tablets should be used only once a day. A high-fat diet can reduce the rate at which the drug starts working. The tadalafil present in this drug works by increasing the blood pressure in the arteries of the penis. This medicine should be used once in 24 hours. Vidalista is activated within 30-40 minutes of using it. It works by improving male blood flow and helps men achieve and maintain an erection for longer to appreciate satisfactory sex.