Tadact 20 mg is a medication that contains the active ingredient tadalafil. Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor and is primarily used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis, helping men achieve and maintain erections. As with other medications in this class, Tadact 20 mg should be used under the guidance and prescription of a healthcare professional. It's important to consult your doctor before taking this medication, especially if you have any underlying medical conditions, including liver problems.