What else is Nizagara (sildenafil) used for?Covering additional uses for only a small portion of the population, Nizagara is also effective because of some side effects, about this in detail here https://www.gulickhhc.com/erectile-dysfunction/nizagara.htm. For example, it is used to treat pulmonary arterial hypertension, a rare condition involving the right ventricle of the heart. In addition, climbers note that sildenafil is useful for preventing and treating pulmonary edema caused by high altitude.