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Drug Name: Viagra
Generic Name(s): Sildenafil* (This generic drug is not yet formally approved by the FDA as an Erectile Dysfunction treatment.)
Drug Class: PDE 5 Inhibitors
Treats: Erectile Dysfunction

Viagra is used in the treatment of erectile dysfunction, a condition where men find it difficult to initiate and maintain an erection. The drug is taken approximately 1 hour before sexual intercourse, with its effects lasting several hours. Common side effects include flushing, headache and elevated heart rate.

Viagra is a medicine used in the treatment of erectile dysfunction – a condition also referred to as impotence. The medicine may also be used to treat pulmonary arterial hypertension, a condition characterised by high blood pressure in the lungs.

Viagra is used because its active ingredient, sildenafil, is a PDE5 inhibitor. PDE5, or phosphodiesterase type 5, is an enzyme responsible for the blood vessel constriction. It’s only by inhibiting this enzyme that blood flow is maximized around the body including to the penis.

Viagra is associated with its own range of potential side effects. Among these include headache, flushing, abnormal vision, muscle pain, stuffiness, and drowsiness.