cenforce is a class PDE inhibitor of the active ingredient sildenafil citrate. In other words, sildenafil citrate cenforce  is prescribed by doctors to treat erectile dysfunction (ED) or impotence in men. cenforce  is an FDA approved drug for the treatment of ED. When a patient cannot achieve a hard erection, he loses confidence in sex. In such cases, sildenafil citrate cenforce  is prescribed by a doctor