Reports coming from researchers in different areas of health at various universities have come up with exciting facts about Viagra tablet benefits. Viagra can easily reduce the symptoms of Raynaud phenomenon, a circulatory disorder. But Another research team has published a report that Viagra can help patients with fatal pulmonary arterial hypertension that is affecting around 100,000 people the world over. Viagra Pill's work function is fast show result within 15-30 minutes and gives magical results for 4 hours.