vidalista 20mg relaxes muscles of the blood vessels and increases blood run to particular areas of the body. Tadalafil under the name of Vidalista 20mg is used to treat erectile dysfunction (impotence) and sign of kindly prostatic hypertrophy (enlarged prostate). Another brand of tadalafil is Adcirca, which is used to treat pulmonary arterial hypertension and regain exercise capacity in men and women.