Cenforce 100 mg is a medication used to treat impotence in men. It works by boosting the flow of blood to the penile region of the body. This aids men in gaining and maintaining an erection. It's one of a class of drugs called phosphodiesterase type 5 (PDE 5) inhibitors. 

Researchers accidentally discovered the ability of PDE 5 inhibitors to improve erectile dysfunction in men while examining its potential use for hypertension and angina.