Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to acquire or save an erection) in men. Sildenafil (Revatio) is used to insert the ability to exercise in adults like pulmonary arterial hypertension (PAH; tall blood pressure in the vessels carrying blood to the lungs, causing brusqueness of breath, dizziness, and tiredness). children should not usually acknowledge sildenafil,...