Tadarise 20 mg is a medication used to treat erectile dysfunction (ED) in men. It contains Tadalafil as its active ingredient, which is a phosphodiesterase type 5 (PDE5) inhibitor. Tadalafil works by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection. The usual recommended dose is one tablet taken orally with a full glass of water, about 30 minutes to 1 hour before sexual activity. Tadalafil is effective only in the presence of sexual stimulation. Duration of Action: Tadalafil has a relatively long duration of action, and the effects of Tadarise 20 mg may last up to 36 hours, earning it the nickname "the weekend pill."