Revatio (sildenafil) is used to treat erectile dysfunction and pulmonary arterial hypertension (PAH) in adults 18 years and older. It works by dilating blood vessels and increasing blood flow to certain areas of the body. It is a phosphodiesterase 5 (PDE-5) blocker that relaxes blood vessels in the lungs. This allows blood to flow better and lowers the blood pressure in the lungs. Your heart is able to pump better, your body gets more oxygen, and you should be able to breathe and exercise more easily. PDE-5 blockers also relax blood vessels in other parts of the body to increase blood flow, which is why they are also used for erectile dysfunction. GET YOUR COPY TODAY BY SCROLLING UP AND CLICKING BUY NOW TO GET YOUR COPY NOW IN ONE CLICK