Cenforce FM 100 mg contains the active ingredient sildenafil citrate, which is a phosphodiesterase type 5 (PDE5) inhibitor. The primary neurotransmitter pathway targeted by sildenafil is the nitric oxide (NO) pathway.

Here's how it works:

Nitric Oxide (NO) Pathway: When a man is *****ly stimulated, nitric oxide is released in the erectile tissue of the *****. Nitric oxide activates an enzyme called guanylate cyclase, which leads to increased levels of cyclic guanosine monophosphate (cGMP).

cGMP: cGMP relaxes smooth muscles in the blood vessels of the *****, allowing them to dilate and increasing blood flow into the *****. This increased blood flow is necessary for an erection to occur.

PDE5 Inhibition: Sildenafil in Cenforce FM inhibits the action of phosphodiesterase type 5 (PDE5), an enzyme that breaks down cGMP. By inhibiting PDE5, sildenafil helps to maintain higher levels of cGMP in the erectile tissue, which enhances the erectile response to ***** stimulation.

Therefore, the primary mechanism of action of Cenforce FM 100 mg is to enhance the effects of nitric oxide, leading to increased blood flow in the ***** and improved erectile function.