Cenforce 100mg, containing sildenafil citrate as its active ingredient, is a medication designed to address ED and restore erectile function. Its mechanism of action involves inhibiting the enzyme phosphodiesterase type 5 (PDE5), which regulates blood flow to the penis. By blocking PDE5, Cenforce 100mg increases levels of cyclic guanosine monophosphate (cGMP), leading to relaxation of smooth muscles in the penile arteries and increased blood flow, resulting in a firm erection when sexually stimulated.