Cenforce 100 is widely used in men and is known to contain an active ingredient called sildenafil citrate. It is the main component of Cenforce 100 mg and the main component of a product called Vi*gra. Some call it Cenforce 100mg Generic Viagra because of the same active ingredient. This condition can be chronic or insignificant in nature, and it is very important that men are tested, depending on the severity of the problem. Erectile dysfunction can occur as a symptom of some other illnesses.