Avanafil Action Mechanism
Avanafil is a phosphodiesterase type 5 (PDE5) inhibitor. It inhibits and slows the effects of PDE 5 enzymes. PDE5 breaks down cGMP in penile tissues, preventing erection. However, it works only when the user feels sexual arousal.
Inhibition of PDE5 Enzyme
Phosphodiesterase type 5 (PDE5) is an enzyme that breaks down cyclic guanosine monophosphate (cGMP), a molecule essential for relaxing smooth muscles in blood vessels. Avanafil selectively inhibits PDE5, preventing the breakdown of cGMP in the penis.
Relaxation of Blood Vessels
Increased cGMP levels relax the smooth muscles in the walls of the penile blood vessels. This process, known as vasodilation, widens the blood vessels and allows more blood to flow into the corpora cavernosa (spongy tissues in the penis).
Improved Blood Flow
During sexual stimulation, this enhanced blood flow leads to a firm and sustained erection. Without sexual stimulation, cGMP levels remain low, so the medication does not cause an automatic erection.
Rapid Onset
Avanafil is one of the fastest-acting ED medications, starting within 15-30 minutes after ingestion. It makes it ideal for spontaneous use.
Shorter Half-Life
Avanafil clears from the body more quickly than other ED medications like tadalafil, reducing the risk of prolonged side effects.
High Selectivity for PDE5
Avanafil targets PDE5 more specifically than older medications, minimizing its impact on other PDE enzymes in the body. It reduces side effects, such as vision changes or other systemic reactions.