Vidalista 20 is a medication used to treat erectile dysfunction (ED) in men. It contains Tadalafil as its active ingredient. Vidalista 20 contains Tadalafil. Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor, which works by increasing blood flow to the penis during sexual stimulation. This helps men achieve and maintain an erection. It is typically taken orally, as needed, approximately 30 minutes to 1 hour before anticipated sexual activity.