Cenforce 100 contains sildenafil citrate, a potent inhibitor of the enzyme phosphodiesterase type 5 (PDE5), which helps to increase blood flow to the penis, resulting in improved erectile function. It typically starts working within 30-60 minutes after ingestion and can last for up to 4 hours.

Cenforce 150 is another variation of sildenafil citrate, offering a higher dosage for those who may require a stronger effect. It works similarly to Cenforce 100 but contains a higher concentration of the active ingredient, making it suitable for men with more severe cases of ED.