Description
Sildenafil: Viagra is a prescription drug that is used to treat erectile dysfunction and pulmonary arterial hypertension. The drug is also used to treat pulmonary arterial hypertension in men with diabetes mellitus. Viagra is a phosphodiesterase type 5 inhibitor that increases blood flow to the penis by relaxing the blood vessels. It works by blocking the action of PDE-5, an enzyme that destroys cGMP. The chemical, cGMP, is needed for the penis to relax and become erect. Viagra does not protect against sexually transmitted diseases. Viagra is a prescription drug that is used to treat erectile dysfunction and pulmonary arterial hypertension. The drug is also used to treat pulmonary arterial hypertension in men with diabetes mellitus. Viagra is a phosphodiesterase type 5 inhibitor that increases blood flow to the penis by relaxing the blood vessels. It works by blocking the action of PDE-5, an enzyme that destroys cGMP. The chemical, cGMP, is needed for the penis to relax and become erect. Viagra does not protect against sexually transmitted diseases.
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