Tadarise 20 mg is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient Tadalafil, which is a PDE5 inhibitor, the same active ingredient found in Cialis. Tadalafil works by increasing blood flow to the penis, which helps men achieve and maintain an erection during sexual stimulation. The usual dose for Tadarise 20 mg is one tablet taken 30 to 60 minutes before sexual activity. The effects can last up to 36 hours, which is one of the reasons Tadalafil is sometimes referred to as the “weekend pill.”