Cenforce 100 is a medication used to treat erectile dysfunction (ED) in men. The active ingredient in Cenforce 100 is Sildenafil Citrate, which works by relaxing the blood vessels in the penis, allowing more blood to flow to the area and helping to achieve and maintain an erection during sexual stimulation. Cenforce 100 is typically taken orally, with or without food, about 30 minutes to an hour before sexual activity. It is important to follow the dosage instructions provided by a healthcare provider and to not exceed the recommended dose. Side effects may include headache, flushing, and dizziness. Cenforce 100 is available by prescription only.