The active salt in Vidalista Black 80 includes tadalafil, an active ingredient used to treat erectile dysfunction. includes tadalafil, an active ingredient used to treat erectile dysfunction. includes tadalafil, an active ingredient used to treat erectile dysfunction. is tadalafil, a PDE-5 inhibitor. Tadalafil increases blood flow to the p*nis by relaxing the muscles and blood vessels in the p*nis. Help a man get an erection. Tadalafil also helps treat pulmonary hypertension by relaxing the blood vessels in the lungs allowing blood to flow freely. Vidalista Black 80mg includes tadalafil, an active ingredient used to treat erectile dysfunction.