Tadalafil is an active salt in Vidalista 2.5 Mg tablet which increases the blood flow to the penis by relaxing the muscles in penile blood vessels hence, treating Erectile Dysfunctioning. It also treats pulmonary hypertension by relaxing the blood vessels in the lungs to allow blood to flow more easily. Use tadalafil exactly as directed by your doctor. Do not use more of it, do not use it more often, and do not use it for a longer time than your doctor ordered. Also, do not stop taking this medicine without checking first with your doctor.