Vidalista 20 mg is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient Tadalafil, which is a PDE5 inhibitor (phosphodiesterase type 5 inhibitor). Vidalista 20 mg works by increasing blood flow to the penis, helping men with ED achieve and maintain an erection during sexual activity. Tadalafil is the same active ingredient found in Cialis, and Vidalista is a generic version.