Cenforce 25 is the versatile sildenafil blue pill for men's health. One brand of sildenafil citrate is Cenforce 25 mg This includes the active ingredient, sildenafil. The way that sildenafil works is that it causes the blood vessels in the penile area to dilate and relax, which increases blood flow there. Cenforce 25 milligrams This facilitates getting an erection. Cenforce should be taken three times a day, separated by at least four to six hours between doses. PDE 5 (phosphodiesterase 5) inhibitors include Cenforce. In addition to treating erectile dysfunction, this drug is used to treat pulmonary hypertension. For pulmonary hypertension, it is usually administered three times a day; however, the dosage for erectile dysfunction may differ.