Tadarise is a generic version of the drug, Cialis, and is used to treat erectile dysfunction (ED). It works by increasing blood flow to the penis to help a man get and maintain an erection sufficient for sexual activity. Tadarise comes as a tablet, and is available in 20mg or 40mg strengths, depending on the desired effect. It should be taken at least 30 minutes before sexual activity for best results. Tadarise is a popular generic medicine used to treat erectile dysfunction (ED). It contains tadalafil as its active ingredient, which helps a man to achieve and maintain an erection when aroused. Tadarise increases blood flow to the penis, helping it stay hard during sexual intercourse. It is available in different dosages, with the most common being 20mg. It should be taken prior to engaging in sexual activity for optimal effectiveness.