Vidalista 40 belongs to Sildenafil. It is an active ingredient in the well-known ED medication called Viagra. While Vidalista 40 mg is commonly used for treating pulmonary hypertension, doctors may also recommend Vidalista 40 for off-label treatment of Erectile Dysfunction. The mechanism of action of Vidalista 40mg involves enhancing blood flow to the penis through the relaxation and dilation of blood vessels in the penile area. Typically, Vidalista is taken three times daily. It can be consumed with or without food.