Tadfil 20 mg is a medication primarily used to treat erectile dysfunction (ED) in men. It contains tadalafil, which is a phosphodiesterase type 5 (PDE5) inhibitor. Tadalafil works by increasing blood flow to the during stimulation, allowing for an erection to occur. The active ingredient in Tadfil 20 mg is tadalafil. Tadalafil belongs to the same class of medications as sildenafil and vardenafil (Levitra), but it has a longer duration of action, often referred to as the "weekend pill" due to its ability to remain effective for up to 36 hours after dosing. https://www.genericday.com/tadfil-20-mg.html