Cenforce 100 tablets are oral tablets used to treat erectile dysfunction (ED) in men. It contains the active ingredient sildenafil citrate, which relaxes smooth muscle in the walls of blood vessels and increases blood flow to the penis. It belongs to a class of drugs known as PDE5 inhibitors. It is recommended to take 1 tablet every 24 hours. Can be taken with or without food. It should be taken approximately 30 minutes to 1 hour before planned sexual intercourse or as directed by your doctor. The effect of this medicine lasts for about 4-5 hours.