Sildenafil citrate directly relaxes blood vessels in the penis, increasing blood flow and facilitating erections. This action relies on inhibiting a specific enzyme, phosphodiesterase-5 (PDE5).
PDE5 normally breaks down cyclic GMP, a molecule crucial for penile erection. By blocking PDE5, sildenafil allows cyclic GMP levels to remain high, promoting vasodilation and improved erectile function.
The recommended starting dose is typically 50mg, taken as needed, approximately one hour before sexual activity. Your doctor will tailor the dosage to your individual needs and health conditions.
Important Note: Sildenafil isn’t suitable for everyone. Consult your doctor to discuss potential side effects and interactions with other medications, especially nitrates. He or she can also assess your suitability for this treatment and help you manage any potential risks.
Common side effects can include headache, flushing, nasal congestion, and visual disturbances. These usually are mild and temporary. Serious side effects are rare, but seek immediate medical attention if you experience chest pain, sudden vision loss, or prolonged erection (priapism).
Sildenafil citrate works best in conjunction with sexual stimulation. It doesn’t directly cause an erection; it enhances the body’s natural response to sexual stimulation.
