Vidalista 40mg contains Tadalafil which helps to relax the soft muscles and blood vessels, which increases the blood flow in specific body parts; mainly the penis. It is the drug of choice for many men suffering from erectile dysfunction and works by...MásVidalista 40mg contains Tadalafil which helps to relax the soft muscles and blood vessels, which increases the blood flow in specific body parts; mainly the penis. It is the drug of choice for many men suffering from erectile dysfunction and works by providing an effective erection.