Patients are always advised to take Vidalista 2.5 mg tablets following their doctor's prescription and instructions. One tablet daily is enough. Tadalafil (PDE-5 inhibitor) is an active salt in Vidalista 2.5 Mg tablets that relaxes the muscles in the blood vessels of the penis and increases blood flow to the penis, therefore, treats erectile dysfunction. It also treats pulmonary hypertension by relaxing the blood vessels in the lungs to allow blood to flow more easily.