What Is CDP-Choline (Citicoline)?
CDP-Choline (cytidine 5′-diphosphocholine), also known as citicoline, is an endogenous compound that serves as an intermediate in the synthesis of phosphatidylcholine, a major component of neuronal cell membranes. It provides both choline and cytidine (which converts to uridine), offering dual neuroprotective and cognitive benefits.
How CDP-Choline (Citicoline) Works
CDP-Choline is hydrolyzed to choline and cytidine in the gut. Choline supports acetylcholine synthesis (critical when stacking with racetams). Cytidine converts to uridine, which supports RNA synthesis and synaptic membrane repair through the Kennedy pathway. This dual mechanism makes CDP-Choline both a choline source and a neuroprotective compound. Studies show it also increases dopamine receptor density in the striatum.
CDP-Choline (Citicoline) Dosage
Standard dose: 250 to 500 mg per day. When pairing with piracetam, 250 mg CDP-Choline per 1,200 mg piracetam is a common ratio. Clinical trials for stroke recovery used 500 to 2,000 mg/day. Take with or without food.
Clinical Evidence
CDP-Choline has a strong evidence base. A 2005 Cochrane review of 14 trials (1,336 patients) found that citicoline had a positive effect on memory and behaviour in patients with cognitive deficits associated with cerebrovascular disorders. A 2012 ICTUS trial studied citicoline for acute ischemic stroke (2,298 patients), finding safety but no significant efficacy advantage for that specific indication. For healthy individuals, a 2015 study showed improved attention and psychomotor speed with 250 mg/day citicoline.
CDP-Choline (Citicoline) vs Piracetam: How They Compare
Like Alpha-GPC, CDP-Choline is a complement to piracetam rather than a replacement. Both provide choline for acetylcholine synthesis, preventing the headaches associated with piracetam use. CDP-Choline offers the additional benefit of cytidine/uridine for membrane repair, while Alpha-GPC delivers more choline per gram. Either is an excellent pairing with piracetam. Elite Bio Supply carries pharmaceutical-grade piracetam (1200 mg, 100 tablets) for researchers building comprehensive nootropic protocols.
Legal Status in Canada
CDP-Choline is classified as a dietary supplement in Canada and the United States. It is a prescription drug in some European countries (e.g., as Ceraxon in Spain).
Related Resources
- Piracetam Dosage Guide
- Piracetam Side Effects
- Buy Piracetam in Canada
- The Complete Guide to Racetam Nootropics
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Elite Bio Supply sells research compounds for research purposes only. This content does not constitute medical advice. The information above is based on published clinical literature and is provided for informational purposes. Consult a qualified physician before starting any protocol.