Tadarise is a medication used to treat erectile dysfunction (ED), containing the active ingredient tadalafil. Tadalafil belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors, which work by increasing blood flow to the penis during sexual stimulation, thereby helping men achieve and maintain an erection. Tadarise contains tadalafil as its active ingredient. Tadalafil is also the active ingredient in brand-name medications such as Cialis.