Tadarise 2.5 mg is a medication that contains the active ingredient tadalafil. It is primarily used to treat erectile dysfunction (ED), a condition characterized by the inability to achieve or maintain an erection sufficient for satisfactory sexual intercourse. Tadalafil, the active ingredient in Tadarise, works by increasing blood flow to the penis when a man is sexually aroused, thereby facilitating the ability to achieve and sustain an erection.