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Citicoline (Cognizin): Supports Dopamine and Acetylcholine for Attention Citicoline is a brain nutrient that supports acetylcholine (an attention neurotransmitter) and phospholipid repair, meaning it helps maintain the integrity of brain cell membranes and the signaling needed for clear thinking

Earlier shorter trials reported small statistically significant differences but the effect sizes were modest

The wide deficiency prevalence range reported among vegans 5 to 52% in a 2024 Proceedings of the Nutrition Society study reflects the dramatic difference between those who supplement consistently and those who do not

A key challenge is optimizing the bioavailability and pharmacokinetics of these compounds for oral administration in humans