Vidalista 80 is a medicine containing the active ingredient tadalafil used to treat erectile dysfunction (ED) and pulmonary arterial hypertension (PAH). Tadalafil works by increasing blood flow to the penis, which helps you get and keep an erection. Vidalista Pill is a sexual function enhancing steroid. It is prescribed to men with erectile dysfunction.It works by increasing blood flow to the penis, which leads to an erection. A normal man can have a satisfactory erection, but the erection of a patient with erectile dysfunction is not enough.