Sildenafil Citrate is included in Cenforce 100 mg because it is the active ingredient responsible for treating erectile dysfunction (ED). Cenforce 100 mg is a medicine used to help men achieve and maintain an erection during sexual activity. Sildenafil Citrate works by blocking the enzyme PDE5 (phosphodiesterase type 5). This action relaxes the blood vessels in the penis and increases blood flow when a man is sexually stimulated. Without sildenafil, Cenforce would not have any effect on Cenforce 100 Mg function. The rest of the tablet mainly helps in forming the medicine (inactive ingredients), but it is sildenafil that provides the actual therapeutic benefit. In simple terms, sildenafil is included because it is the scientifically proven compound that treats ED by improving blood circulation to the penile tissue. It does not create sexual desire on its own; it only works when there is sexual stimulation. This is why Cenforce 100 mg is considered a PDE5 inhibitor-based ED treatment, similar to other sildenafil-containing medicines.