Tadarise 20 mg is a medication used to treat erectile dysfunction (ED) in men. The active ingredient in Tadarise 20 mg is Tadalafil. Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor, similar to sildenafil citrate. It works by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection. Tadarise 20 mg can be taken with or without food, but taking it on an empty stomach may help it be absorbed more quickly.