cenforce 100 mg is a prescription medicine produced by Centurion Laboratories. It contains the same amount of Sildenafil citrate as Viagra. This medicine increases blood flow in the penis by relaxing blood vessels and increasing erection. It is also recommended to avoid cold drinks and fatty foods after taking the medicine. A prolonged erection can cause damage to the penis and may result in a color change. Other side effects may include sore muscles and body pain. This medication should always be used with care as it is known to cause hypersensitivity in some people, especially those with heart and kidney disorders.