Citicoline (CDP-choline) is a naturally occurring compound involved in the formation and maintenance of cell membranes. In the brain, it plays a key role in phospholipid synthesis and the maintenance of gray matter. Earlier research has suggested that citicoline may help protect nerve cells during ischemic injury, such as stroke, possibly by supporting membrane integrity and cellular energy metabolism.
A study published in NMR in Biomedicine (2008; 21(10):1066–1075) examined the effects of citicoline supplementation on brain metabolism in 16 healthy adults with a mean age of 47 years. Subjects received either 500 mg/day or 2,000 mg/day of citicoline for six weeks.
Using advanced magnetic resonance spectroscopy, researchers observed improvements in brain phospholipid turnover, increased phosphocreatine, and higher ATP levels, indicating enhanced cellular energy availability. These metabolic changes were most notable in the frontal lobes, regions involved in executive function, attention, and decision-making.
Interestingly, the lower dose (500 mg/day) produced more favorable metabolic changes than the higher dose. The authors concluded that citicoline supplementation may support brain energy metabolism and could be beneficial in mitigating aspects of age-related cognitive decline, even in otherwise healthy adults.
