Sildenafil Para Que Sirve treats pulmonary arterial hypertension, also known as Group 1 pulmonary hypertension. The treatment aims to improve patients’ ability to exercise and delay disease progression. Sildenafil Pill is a phosphodiesterase 5 inhibitor. Phosphodiesterase, an enzyme produced in the lungs and other parts of the body, breaks down a substance called cyclic guanosine monophosphate.

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