Sildalis 120mg is a combination of both Sildenafil and Tadalafil. There are people who have found Sildalis to be extremely effective for them. It is necessary to consult a doctor before taking Sildalis. Sildenafil relaxes muscles of the blood vessels and increases blood flow to particular areas of the body. Sildenafil under the name Viagra is used to treat erectile dysfunction (impotence) in men.