Viagra, or sildenafil, works by increasing blood flow to the penis. Specifically, it inhibits an enzyme called phosphodiesterase-5 (PDE5), allowing for higher levels of cGMP. This increased cGMP relaxes the smooth muscles in blood vessels, leading to improved blood flow and facilitating an erection.
Common Side Effects
While generally safe for many men, Viagra can cause side effects. These range from mild, such as headaches, facial flushing, and nasal congestion, to more serious ones. Visual disturbances, such as blurred vision or changes in color perception, are possible. More rarely, individuals experience hearing loss or heart-related problems. It’s crucial to discuss any pre-existing health conditions with a doctor before taking Viagra.
Less Common but Serious Side Effects
Prolonged or painful erections (priapism) require immediate medical attention. This is a rare but serious side effect. Also, a sudden decrease or loss of vision or hearing needs prompt medical evaluation. Always follow your doctor’s prescribed dosage and seek medical help if you experience any concerning symptoms. Consult your physician to weigh the potential benefits against the risks before using Viagra.
