Viagra, or sildenafil citrate, works by inhibiting a specific enzyme called phosphodiesterase-5 (PDE5). This enzyme breaks down cyclic guanosine monophosphate (cGMP), a molecule crucial for penile erection. By blocking PDE5, Viagra increases cGMP levels, leading to relaxed blood vessels in the penis. This allows increased blood flow, resulting in an erection.
The intended use of Viagra is the treatment of erectile dysfunction (ED) in adult men. It facilitates achieving and maintaining an erection sufficient for satisfactory sexual intercourse. Dosage should always follow a physician’s recommendations, as individual needs vary.
Importantly, Viagra’s effectiveness depends on sexual stimulation. It does not act as an aphrodisiac; it simply helps men achieve an erection in response to sexual arousal.
Men considering Viagra should consult their doctor to discuss their medical history and any potential side effects or drug interactions. This ensures safe and appropriate use.
Common side effects include headache, facial flushing, nasal congestion, and visual disturbances. Serious side effects are rare but require immediate medical attention.
