The drug Cenforce 100 (sildenafil citrate) is prescribed to men between the ages of 18 and 65. Cenforce 100mg (Sildenafil Citrate) is a blue-colored medication made up of an element called Sildenafil. Sildenafil is commonly available in many erectile dysfunction medications. Cenforce 100 mg (Sildenafil Citrate) is a product manufactured by Centurion Laboratories. Basically, Sildenafil Citrate facilitates the maintenance of an erection in men. The drug accomplishes this by increasing blood flow to the stimulated area.