Hemic and Lymphatic: vaso-occlusive disaster: In a small, prematurely terminated examine of REVATIO (sildenafil) in individuals with pulmonary arterial hypertension (PAH) secondary to sickle mobile disorder, vaso-occlusive crises requiring hospitalization were being much more generally noted in sufferers who obtained sildenafil than in Those people

Sufferers must halt VIAGRA and look for clinical care if a unexpected lack of vision happens in a single or both equally eyes, which might be an indication of non arteritic anterior ischemic optic neuropathy (NAION).Administration of VIAGRA with nitric oxide donors like organic and natural nitrates or natural and organic nitrites in almost any type