Vidalista 20 mg is a medication used to treat erectile dysfunction in men. It works by increasing blood flow to the penis, allowing a man to get and maintain an erection when sexually stimulated. The active ingredient in Vidalista 20 mg Tadalafil, which is a type of PDE-5 inhibitor. This type of medication works by blocking the action of an enzyme called PDE-5, which is responsible for reducing the levels of cGMP in the body. By blocking the action of this enzyme, Vidalista 20 mg increases the levels of cGMP, allowing the smooth muscles in the penis to relax and allowing increased blood flow to the area. This increased blood flow allows a man to get and maintain an erection when sexually stimulated.