Vidalista 20 is a medication used to treat erectile dysfunction (ED) in men. It contains Tadalafil, which is the active ingredient. Tadalafil works by increasing blood flow to the penis, helping men achieve and sustain an erection when sexually stimulated. Vidalista 20 is considered a medium-strength dose of Tadalafil and is often used by men who need help with ED but don't require a high dose.