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For what reason is this medicine endorsed?Sildenafil (Viagra) is utilized to treat erectile brokenness (barrenness; powerlessness to get or keep an erection) in men. Sildenafil (Revatio) is utilized to improve the capacity to practice in grown-ups with pneumonic blood vessel hypertension (PAH; hypertension in the vessels conveying blood to the lungs, causing brevity of breath, wooziness, and tiredness). Youngsters ought not for the most part take sildenafil, however at times, a specialist may conclude that sildenafil (Revatio) is the best medicine to treat a kid's condition. Sildenafil is in a class of meds called phosphodiesterase (PDE) inhibitors. Sildenafil treats erectile brokenness by expanding blood stream to the penis during sexual incitement. This expanded blood stream can cause an erection. Sildenafil treats PAH by loosening up the veins in the lungs to permit blood to stream without any problem.