Citicoline is a brain chemical that occurs naturally in the body. As a medicine, it is taken by mouth as a supplement or given as an injection into the vein (by IV) or as a shot into the muscle.
In Japan and Europe, Citicoline was originally used as a prescription drug to help improve memory, thinking, and brain function in people who are healing from a stroke. It is primarily used as a dietary supplement in the U.S.
Citicoline is taken by mouth or given as an injection to help memory loss due to aging, improve vision in people with glaucoma, and help with recovery in stroke patients. It is also used for Alzheimer disease, Parkinson disease, bipolar disorder, lazy eye, and other conditions of the brain. But there is no good scientific research to support these other uses.