Cenforce 100 is a drug used to treat erectile dysfunction in men. A major ingredient called sildenafil citrate plays an important role in this medicine. This drug helps to relax the blood vessels and increase blood flow to the muscles, so that you can get and maintain a strong erection. This medication is usually taken on an empty stomach or with a meal. This medicine should not be kept in a humid environment or cold area. If you have any kind of allergy, it is imperative that you consult a doctor once before taking this medicine.