cenforce d is a medicine used to treat impotence, erectile dysfunction and other sexual problems in males. It is used to treat erectile dysfunction and impotence in males aged 18-65 years. The active ingredient in cenforce d is Sildenafil Citrate, which increases blood flow to the penis tissues in men. cenforce d can be taken before or after meals. You should take it as directed by your doctor. Fatty foods and cold drinks should be avoided as they slow down the effects of cenforce d.