Tadalista 5 is a medication that contains the active ingredient Tadalafil. It is primarily used to treat erectile dysfunction (ED), a condition in which a man has difficulty achieving or maintaining an erection sufficient for sexual activity. Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor. It works by increasing blood flow to the penis during sexual stimulation, allowing a man to achieve and sustain an erection.