Sildenafil citrate is the key component of Viagra. It works by increasing blood flow to the penis.
Specifically, sildenafil inhibits an enzyme called phosphodiesterase-5 (PDE5). This enzyme usually breaks down a substance called cyclic GMP, which plays a crucial role in achieving and maintaining an erection. By inhibiting PDE5, sildenafil allows cyclic GMP levels to rise, resulting in relaxation of the smooth muscles in the penis and increased blood flow.
This increased blood flow facilitates an erection in response to sexual stimulation. It’s important to understand that sildenafil doesn’t cause erections spontaneously; sexual stimulation is still necessary.
The dosage of sildenafil varies, and a doctor should always guide you on appropriate use. Factors such as age, overall health, and other medications affect the optimal dosage. Always follow your doctor’s instructions carefully.
Note: Sildenafil has potential side effects. Common side effects include headaches, flushing, and nasal congestion. More serious side effects are rare but should be reported to your doctor immediately.
Consult your physician before starting any new medication, including Viagra, to assess its suitability and potential risks based on your specific health profile.
