Citicoline (CDP-Choline)
Also known as: CDP-choline, Cytidine diphosphate-choline
Citicoline is a compound that supplies choline and cytidine and is commonly explored in cognition, attention, and focus contexts. Human evidence is limited, with some small studies suggesting effects while larger, higher-quality trials are lacking. It is one of several choline sources people discuss for brain-related goals.
Snapshot
Evidence level is outcome-specific; a supplement can have stronger evidence for one use and limited evidence for another.
What this page can tell you: Commonly discussed timing, food notes, caution categories, and an honest note on how much source review this entry still needs.
What it cannot: Whether this is appropriate for you personally, or that it treats, prevents, or cures any condition. Informational only — discuss with a clinician or pharmacist.
🕒 Timing
When: Midday, Morning
Food: With or without food
Commonly taken earlier in the day; some people split the dose. Timing is otherwise flexible.
💊 Common use range
250–500 mg
Commonly discussed as well tolerated at typical doses; no formal upper limit is established — verify and follow product guidance.
Ranges are informational, not a recommended dose. Talk to a professional about what is right for you.
⚠️ Commonly noted interactions (supplements)
None listed.
Often about absorption or timing rather than danger — separating doses is common. This list is not exhaustive.
🧭 Baseline caution
General caution for ordinary, common use — before accounting for your specific dose, medications, health history, or procedures.
No general caution factors flagged for ordinary use. See context alerts below for situations that may still apply to you.
Caution level is an informational summary of commonly discussed caution categories and doses — not a safety rating, approval, or medical advice. Low caution does not mean safe for you.
🔎 Context alerts to review
Context alerts may matter depending on your dose, medications, health history, or procedure plans — they do not mean the supplement is generally risky at ordinary use.
Evidence still under review
- Evidence not fully source-reviewed yet
🩺 Medication caution categories
None flagged here, but always review your full routine with a professional.
🏥 Surgery & procedure caution
Not a well-established surgical concern; share your full supplement list with your care team.
If you have a procedure scheduled, bring your full supplement list to your surgical and anesthesia team. Do not stop prescribed medication unless your clinician tells you to. Do not start or stop supplements based only on this app.
✅ Quality checklist
- Prefer products with third-party testing or a certificate of analysis (COA).
- Check the label for the exact form and the elemental or active amount per serving.
🧩 Commonly paired with
🔁 Alternatives
🗣️ Questions for a professional
- Between choline sources, does citicoline make sense for my goals?
🔬 Evidence snapshot
Citicoline (CDP-choline) is a choline source studied for memory. Some placebo-controlled RCTs in healthy older adults and a Cochrane review in elderly people with cerebral disorders suggest modest short-to-medium-term memory benefit, but the evidence is limited and mixed (e.g. no benefit on attention), and several key studies are manufacturer-funded. It is not a treatment for dementia, stroke, or brain injury.
🧪 Forms & quality
Needs evidence review — no source-reviewed information yet. We only show dose and monitoring details after they have been checked against reputable sources.
See the supplement glossary for what form names like "L-", chelated, or standardized extract mean.
📏 Dose & monitoring
Needs evidence review — no source-reviewed information yet. We only show dose and monitoring details after they have been checked against reputable sources.
Evidence vs. burden: Not yet reviewed
😐 Commonly reported side effects
- Headache
- Digestive upset
- Trouble sleeping if taken late in some people
Non-exhaustive and individual.
🔄 Cycling & breaks
No established cycling pattern.
📅 Daily use notes
Some people report headache or mild digestive upset; taking it earlier in the day may suit those sensitive to alertness effects.
📋 Source review status
Partially reviewed — last reviewed 2026-07-12
Partially reviewed 2026-07-12: an RCT (PMC8349115) + a Cochrane review. Modest short/medium-term memory signal (not on attention); much positive data is industry-sponsored; well tolerated (mild GI). No independent monograph corroborated interactions → partially reviewed.
Research backlog (queries to verify):
- citicoline cognition attention randomized controlled trial
- citicoline CDP-choline side effects tolerability
📚 References
- RCT — citicoline & memory in healthy older adultsPubMed review — 100 adults 50-85 with age-associated memory impairment; 500 mg/day for 12 weeks improved episodic & composite memory vs placebo; mild transient AEs; manufacturer-sponsored.
- Cochrane review — CDP-choline for cognitive disorders in the elderlyPubMed review — Some positive effect on memory/behaviour short-to-medium term; well tolerated; no benefit on attention; longer studies needed.
Verified against the source shown. See the research-status page for how review works.
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