Viagra, or sildenafil citrate, primarily treats erectile dysfunction (ED). It works by increasing blood flow to the penis, facilitating an erection when sexually stimulated. This effect results from inhibiting an enzyme called phosphodiesterase-5 (PDE5).
Viagra’s Mechanism of Action
PDE5 breaks down cGMP, a molecule crucial for achieving and maintaining an erection. By blocking PDE5, Viagra allows cGMP levels to rise, resulting in improved blood flow to the penis. This process requires sexual stimulation; Viagra doesn’t create erections spontaneously.
Beyond Erectile Dysfunction
Viagra also finds use in treating pulmonary arterial hypertension (PAH), a condition characterized by high blood pressure in the arteries leading to the lungs. In this context, Viagra improves blood flow to the lungs, easing symptoms. Always consult a physician before using Viagra for any condition.
Dosage and administration vary depending on individual needs and the condition being treated. Your doctor will guide you on appropriate usage. Potential side effects include headache, flushing, nasal congestion, and visual disturbances. Serious side effects are rare but necessitate immediate medical attention.
