Cenforce 100 is a brand of medicine that contains sildenafil citrate, an active ingredient used to treat erectile dysfunction. It belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. The drug works by increasing blood flow to the penis during sexual arousal, which helps men achieve and maintain an erection. You take the medicine with a light meal. Or take the medicine with 1 glass of water. Take the medicine 30 minutes before you have sex. It works for 4-6 hours. People are given using Cenforce 100mg reviews best way.