Vidalista 5mg is a low-dose form of the medication Tadalafil, primarily used to treat erectile dysfunction (ED) in men. Tadalafil, the active ingredient in Vidalista, belongs to a class of drugs called PDE5 inhibitors. It works by relaxing the blood vessels in the penis, improving blood flow, and making it easier for a man to achieve and maintain an erection when sexually stimulated. Vidalista 5mg works by inhibiting the enzyme PDE5, which normally breaks down cGMP, a compound that helps relax the muscles in the blood vessels of the penis.