The active component of Vidalista 20mg, a medication primarily used to treat male erectile dysfunction (ED), is tadalafil. It is a PDE5 inhibitor that increases blood flow to the penis, resulting in a firm and durable erection. increases blood flow to the penile region by relaxing blood vessels. It only works with sexual stimulation; it doesn't generate erections on its own. is preferred by many men since it has a longer-lasting effect than sildenafil (Viagra).