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Citicoline
Bottom line
In our scoring, Citicoline rates mixed evidence: the evidence is mixed for attention, focus, and psychomotor speed in healthy adults. Our top-scored product is Cognizin Citicoline 250mg, 150ct (89/100), about $0.33 a day at a clinical dose of 250-500mg daily for healthy attention and memory. Bottom line: promising but not settled, so manage expectations. This is our opinion, not medical advice; talk to your clinician before starting.
Citicoline feeds your brain the raw material it uses to build and repair the fatty membranes around neurons, and that mechanism is why it can steady attention through a long block of work or soften the memory slips that creep in with age - making it one of the better bets in a noisy category.
- Evidence
- Mixed Evidence
- Category
- Cognitive & Nootropics
- Best form
- Cognizin (Kyowa Hakko branded citicoline, used in most US healthy-adult and older-adult RCTs, FDA NDI on file)
- Effective dose
- 250-500mg daily for healthy attention and memory
- Lab tested
- 3 of 8 products
- Category
- Cognitive & Nootropics
- Best form
- Cognizin (Kyowa Hakko branded citicoline, used in most US healthy-adult and older-adult RCTs, FDA NDI on file)
- Effective dose
- 250-500mg daily for healthy attention and memory
- Lab tested
- 3 of 8 products
Key takeaways
- →Modest but real attention and memory benefits at 250-500mg/day in healthy adults; nothing dramatic, but better-evidenced than most nootropics.
- →Cognizin is the form used in most US clinical trials; generic citicoline is the same molecule at a lower price but not standardized to Cognizin's specs.
- →Acute stroke and TBI thesis did not hold up: the largest trials (ICTUS, COBRIT) were negative despite earlier positive smaller studies.
- →Generally well-tolerated; skip or use cautiously with bipolar disorder due to anecdotal mania reports and with bradycardia at very high doses.
What Is Citicoline?
Citicoline feeds your brain the raw material it uses to build and repair the fatty membranes around neurons, and that mechanism is why it can steady attention through a long block of work or soften the memory slips that creep in with age - making it one of the better bets in a noisy category. Just go in with the real picture, which is narrower than the marketing implies. Citicoline is also called CDP-choline, and Cognizin is the branded version (made by Kyowa Hakko) that most of the US studies actually used. The strongest data come from small to mid-size Cognizin trials in healthy adolescents, healthy adult women, and healthy older adults with age-associated memory impairment, where 250-500mg per day for 4-12 weeks produced modest but real improvements in attention, mental speed, and memory for recent events. The "why" holds up too: taken by mouth, CDP-choline raises plasma choline and uridine in a dose-related way, which feeds the raw material your brain uses to build and maintain the fatty membranes around its neurons.
The acute stroke story is where the shine comes off. Early European trials and pooled analyses hinted at benefit, but the large industry-funded ICTUS trial in 2,298 patients found no advantage over placebo on the global stroke scale at 90 days. A 2020 Cochrane review of 10 RCTs concluded the evidence is low-quality and shows little to no difference for mortality or disability. The COBRIT trial in 1,213 traumatic brain injury patients was also flatly negative at 2000mg/day for 90 days. So the high-dose "protect the brain right after an injury" idea has not held up once the trials got bigger and better-controlled.
The murkier middle ground is mild cognitive impairment and recovery after a stroke. The IDEALE trial in 349 elderly patients with mild vascular cognitive impairment found a significant cognitive-score improvement at 9 months on 1000mg/day, and several smaller open-label trials suggest citicoline may help cognitive recovery in long-term post-stroke patients. The signal is there, but those trials are mostly open-label, Italian, and industry-linked - so read it as promising rather than settled.
For glaucoma, a small Parisi RCT and several follow-ups suggest citicoline may help stabilize the eye's electrical responses in open-angle glaucoma. An interesting niche, but not why most people reach for citicoline. ADHD as an add-on, depression, and recovery from methamphetamine use have only preliminary signals.
So where does that leave you? 250-500mg a day of Cognizin (or generic citicoline if you would rather save money) is a sensible pick if you want a focus aid with better evidence behind it than most nootropics. Do not expect anything dramatic, and do not expect it to rescue an acute stroke or a head injury.
Does It Work? The Evidence
How A-F grades workCiticoline earns a Mixed Evidence rating: the research is suggestive but not settled. Its best-supported uses so far are attention, focus, and psychomotor speed in healthy adults and episodic and overall memory in healthy older adults (grade B), but the evidence across claims is mixed - each is graded on its own below.
Attention, focus, and psychomotor speed in healthy adults
McGlade 2012 RCT (n=60 adult women, 250-500mg x 28d): improved CPT-II attentional focus and inhibition; McGlade 2019 RCT (n=75 adolescent males, 250-500mg x 28d): improved attention and psychomotor speed
Episodic and overall memory in healthy older adults
Nakazaki 2021 RCT (n=100 older adults with age-associated memory impairment, 500mg/day x 12 weeks): significantly greater improvement in episodic and composite memory vs. placebo
Mild vascular cognitive impairment in the elderly
Cotroneo 2013 IDEALE study (n=349, 1000mg/day x 9 months): significant MMSE improvement vs. control; multiple smaller European trials suggest similar direction
Acute ischemic stroke recovery
Davalos 2012 ICTUS trial (n=2,298): no benefit on global stroke scale at 90 days; Marti-Carvajal 2020 Cochrane review of 10 RCTs: little to no difference in mortality or disability, low-quality evidence
Traumatic brain injury
Zafonte 2012 COBRIT trial (n=1,213, 2000mg/day x 90d): no improvement in functional or cognitive status vs. placebo
Open-angle glaucoma (visual function)
Parisi 1999 RCT (n=40, 1000mg/day IM x 60d): significant improvement in VEP and PERG parameters; several small follow-up trials by the same group
ADHD adjunct, depression, methamphetamine recovery
Scattered small trials; no replicated, well-powered RCTs
| Grade | Claimed Benefit | Key Studies | Our Verdict |
|---|---|---|---|
| B | Attention, focus, and psychomotor speed in healthy adults | McGlade 2012 RCT (n=60 adult women, 250-500mg x 28d): improved CPT-II attentional focus and inhibition; McGlade 2019 RCT (n=75 adolescent males, 250-500mg x 28d): improved attention and psychomotor speed | Early Signal |
| B | Episodic and overall memory in healthy older adults | Nakazaki 2021 RCT (n=100 older adults with age-associated memory impairment, 500mg/day x 12 weeks): significantly greater improvement in episodic and composite memory vs. placebo | Early Signal |
| B | Mild vascular cognitive impairment in the elderly | Cotroneo 2013 IDEALE study (n=349, 1000mg/day x 9 months): significant MMSE improvement vs. control; multiple smaller European trials suggest similar direction | Early Signal |
| B | Acute ischemic stroke recovery | Davalos 2012 ICTUS trial (n=2,298): no benefit on global stroke scale at 90 days; Marti-Carvajal 2020 Cochrane review of 10 RCTs: little to no difference in mortality or disability, low-quality evidence | Conflicted |
| B | Traumatic brain injury | Zafonte 2012 COBRIT trial (n=1,213, 2000mg/day x 90d): no improvement in functional or cognitive status vs. placebo | Ineffective |
| C | Open-angle glaucoma (visual function) | Parisi 1999 RCT (n=40, 1000mg/day IM x 60d): significant improvement in VEP and PERG parameters; several small follow-up trials by the same group | Early Signal |
| C | ADHD adjunct, depression, methamphetamine recovery | Scattered small trials; no replicated, well-powered RCTs | Not There Yet |
Citicoline Dosage: How Much to Take
Citicoline dosage, in one line: the evidence-supported range is 250-500mg daily for healthy attention and memory; 1000-2000mg daily in stroke and cognitive impairment trials.
Clinical dose: 250-500mg daily for healthy attention and memory; 1000-2000mg daily in stroke and cognitive impairment trials
Best forms: Cognizin (Kyowa Hakko branded citicoline, used in most US healthy-adult and older-adult RCTs, FDA NDI on file), Generic citicoline / CDP-choline (cheaper but not standardized to Cognizin's specs; pharmacology is the same molecule)
Most healthy-adult trials used 250mg or 500mg a day, either as one morning dose or split in two (say, 250mg in the morning and 250mg in the afternoon). The cognitive-impairment and stroke-recovery trials went higher, 1000-2000mg/day, usually split twice daily. You can take it with or without food. You may notice the attention effect within a few days to a couple of weeks; the older-adult memory trial ran a full 12 weeks before measuring results. Take it earlier in the day if it feels activating - some people find their sleep suffers when they dose it late.
Who Should Take Citicoline?
You want a focus and attention aid that has more evidence behind it than most, especially for long stretches of mental work. You are an older adult noticing the everyday memory slips that come with age (Nakazaki 2021 used 500mg/day for 12 weeks). You have mild vascular cognitive impairment and are working with a doctor. Or you want a low-stimulant cognitive aid to pair with your coffee for sharper focus without piling on more caffeine.
Who Should Avoid It?
Not for everyone
Side Effects & Safety
Product Scores
8 products scored on dosing accuracy, third-party testing, cost per effective dose, and label transparency.
The Scorecard: 8 Products Compared
Cognizin Citicoline 250mg, 150ct
Healthy Origins
$49.99 ÷ 151 days at 250mg/day (1 serving × 250mg)
Healthy Origins was an early Kyowa Hakko Cognizin licensee and is consistently the cheapest per-day Cognizin option on Amazon
Prices checked 2026-06-11. Cost shown is per clinically effective daily dose, not per pill.
Cognizin Citicoline Capsules 250mg, 60ct
Nootropics Depot$29.99 ÷ 60 days at 250mg/day (1 serving × 250mg)
Nootropics Depot is the rare brand that publishes per-lot citicoline CoAs publicly; 180ct version offers better per-day pricing
Prices checked 2026-06-11. Cost shown is per clinically effective daily dose, not per pill.
Citicoline (CDP Choline) 250mg
Jarrow Formulas$47.94 ÷ 120 days at 250mg/day (1 serving × 250mg)
Jarrow's Cognizin SKU is one of the longest-running citicoline products on the US market and uses the exact form most healthy-adult trials tested
Prices checked 2026-06-11. Cost shown is per clinically effective daily dose, not per pill.
Citicoline (CDP-Choline) 250mg, 60ct
Life Extension$23.90 ÷ 60 days at 250mg/day (1 serving × 250mg)
Reasonable swap for Jarrow if you already buy from Life Extension and want to keep brand consolidation
Prices checked 2026-06-11. Cost shown is per clinically effective daily dose, not per pill.
Cognizin Citicoline 1000mg, 60ct (2-pack)
Swanson
$57.99 ÷ 121 days at 1000mg/day (1 serving × 1000mg)
The right pick if you want to mirror the IDEALE or Cotroneo cognitive-impairment dose; for plain focus, the 250mg SKUs are cheaper per effective dose
Prices checked 2026-06-11. Cost shown is per clinically effective daily dose, not per pill.
CDP Choline (Citicoline) 300mg, 60ct
Double Wood Supplements$19.95 ÷ 60 days at 300mg/day (1 serving × 300mg)
Pick this if Cognizin's premium does not feel worth it and you trust Double Wood's general third-party testing program
Prices checked 2026-06-11. Cost shown is per clinically effective daily dose, not per pill.
CDP Choline (Citicoline) 300mg, 60ct
Nutricost$16.95 ÷ 61 days at 300mg/day (1 serving × 300mg)
Workhorse pick for cost-conscious buyers who do not need the Cognizin label and accept Nutricost's GMP-only quality stance
Prices checked 2026-06-11. Cost shown is per clinically effective daily dose, not per pill.
Cognizin Citicoline 500mg, 60ct
Bestvite
$35.99 ÷ 60 days at 500mg/day (1 serving × 500mg)
Bestvite is a smaller US brand that licenses Cognizin; appealing if you want to hit Nakazaki's 500mg dose in one capsule and avoid stearates
Prices checked 2026-06-11. Cost shown is per clinically effective daily dose, not per pill.
Full Comparison
| Category | Cognizin Citicoline 250mg, 150ct Healthy Origins | Cognizin Citicoline Capsules 250mg, 60ct Nootropics Depot | Citicoline (CDP Choline) 250mg Jarrow Formulas | Citicoline (CDP-Choline) 250mg, 60ct Life Extension | Cognizin Citicoline 1000mg, 60ct (2-pack) Swanson | CDP Choline (Citicoline) 300mg, 60ct Double Wood Supplements | CDP Choline (Citicoline) 300mg, 60ct Nutricost | Cognizin Citicoline 500mg, 60ct Bestvite |
|---|---|---|---|---|---|---|---|---|
| Brand Score | 89/100Winner | 88/100 | 86/100 | 86/100 | 84/100 | 82/100 | 80/100 | 77/100 |
| Dosing & Form | 25/25Winner | 25/25 | 25/25 | 25/25 | 23/25 | 22/25 | 22/25 | 25/25 |
| Purity | 19/25 | 22/25Winner | 19/25 | 19/25 | 19/25 | 19/25 | 16/25 | 16/25 |
| Value | 22/25 | 18/25 | 19/25 | 19/25 | 19/25 | 22/25 | 23/25Winner | 17/25 |
| Transparency | 23/25Winner | 23/25 | 23/25 | 23/25 | 23/25 | 19/25 | 19/25 | 19/25 |
| Cost/Day | $0.33 | $0.50 | $0.40 | $0.40 | $0.48 | $0.33 | $0.28Winner | $0.60 |
| Dose/Serving | 250mg | 250mg | 250mg | 250mg | 1000mg | 300mg | 300mg | 500mg |
| Form | Cognizin Citicoline (vegan capsule) | Cognizin Citicoline (capsule) | Cognizin Citicoline (capsule) | Cognizin Citicoline (vegetarian capsule) | Cognizin Citicoline (vegetarian capsule) | Generic Citicoline / CDP-Choline (capsule) | Generic Citicoline / CDP-Choline (vegetarian capsule) | Cognizin Citicoline (vegetarian capsule) |
| Third-Party Tested | No | ✓ Yes | No | ✓ Yes | No | ✓ Yes | No | No |
| Proprietary Blend | No | No | No | No | No | No | No | No |
Frequently Asked Questions
What is the difference between Cognizin and generic citicoline?
Chemically they are the same molecule (cytidine-5'-diphosphocholine). Cognizin is the branded form made by Kyowa Hakko under FDA NDI status, with a published certificate of analysis and the pharmaceutical-grade specs used in most US clinical trials (McGlade, Nakazaki, etc.). Generic citicoline from reputable brands (Double Wood, Nutricost) is typically the same molecule at a lower price but without Cognizin's standardization paperwork. If you want the form that has the trials behind it, Cognizin is the safer bet; if you prioritize price and trust the brand's third-party testing, generic is reasonable.
Citicoline vs alpha-GPC vs choline bitartrate - which should I take?
All three raise plasma choline, but they are not interchangeable. Choline bitartrate is the cheapest but the least efficient at raising brain choline and has a fishy aftertaste at high doses. Alpha-GPC is more bioavailable to the brain and has the strongest acute power-output data in athletes. Citicoline (CDP-choline) raises plasma choline and uridine and has the best healthy-adult attention and older-adult memory data. For focus and memory, citicoline. For acute strength and power output, alpha-GPC. For just hitting a daily choline target cheaply, choline bitartrate or eggs.
How fast does citicoline work?
Some users report a subtle attention lift within the first few days. The published trials are longer: McGlade ran 28 days for attention effects in healthy adults, Nakazaki ran 12 weeks for memory in older adults, and IDEALE ran 9 months for vascular cognitive impairment. If you do not feel anything in 2-4 weeks at 500mg/day, it is unlikely to do much for you.
Can I stack citicoline with caffeine?
Yes, and there is one small RCT (Bruce 2014) showing a citicoline-caffeine beverage improved sustained attention and working memory more than placebo. Citicoline does not add stimulant load, so it is a reasonable way to extend a coffee's mental endurance without doubling up on caffeine. Common stack: 100-200mg caffeine plus 250-500mg citicoline in the morning.
Did citicoline fail for stroke?
Mostly yes, in the form the field originally hoped for. Early European trials suggested benefit, but the large ICTUS trial in 2,298 acute ischemic stroke patients found no significant advantage over placebo at 90 days, and a 2020 Cochrane review of 10 RCTs concluded the evidence is low-quality with little to no clear effect. There is still a smaller signal for chronic post-stroke cognitive recovery in open-label trials, but acute stroke neuroprotection is not where the evidence landed.
Is citicoline safe long-term?
Available data look reassuring. The 12-week Nakazaki trial at 500mg/day and the 90-day COBRIT trial at 2000mg/day reported no serious safety signals, and the IDEALE study followed elderly patients for 9 months on 1000mg/day with good tolerability. Decades of clinical use in Europe and Japan support a benign safety profile. Watch for GI upset, mild insomnia if dosed late, and the rare bipolar-mania case reports.
Do I need to take citicoline with food?
No. Citicoline is well-absorbed orally with or without food. Most clinical trials did not specify food timing. If you find it gives you mild nausea, taking it with a meal solves that.
What is the right Citicoline dosage?
The evidence-supported range is 250-500mg daily for healthy attention and memory; 1000-2000mg daily in stroke and cognitive impairment trials. Most healthy-adult trials used 250mg or 500mg a day, either as one morning dose or split in two (say, 250mg in the morning and 250mg in the afternoon). See the dosage section above for timing and form details, and talk to your clinician about the right dose for you.
Sources
- McGlade E, Locatelli A, Hardy J, et al. Improved attentional performance following citicoline administration in healthy adult women. Food Nutr Sci. 2012;3:769-773.
- McGlade E, Agoston AM, DiMuzio J, et al. The effect of citicoline supplementation on motor speed and attention in adolescent males. J Atten Disord. 2019;23(2):121-134.
- Nakazaki E, Mah E, Sanoshy K, et al. Citicoline and memory function in healthy older adults: a randomized, double-blind, placebo-controlled clinical trial. J Nutr. 2021;151(8):2153-2160.
- Davalos A, Alvarez-Sabin J, Castillo J, et al. Citicoline in the treatment of acute ischaemic stroke: an international, randomised, multicentre, placebo-controlled study (ICTUS trial). Lancet. 2012;380(9839):349-357.
- Zafonte RD, Bagiella E, Ansel BM, et al. Effect of citicoline on functional and cognitive status among patients with traumatic brain injury: Citicoline Brain Injury Treatment Trial (COBRIT). JAMA. 2012;308(19):1993-2000.
- Marti-Carvajal AJ, Valli C, Marti-Amarista CE, et al. Citicoline for treating people with acute ischemic stroke. Cochrane Database Syst Rev. 2020;8:CD013066.
- Cotroneo AM, Castagna A, Putignano S, et al. Effectiveness and safety of citicoline in mild vascular cognitive impairment: the IDEALE study. Clin Interv Aging. 2013;8:131-137.
- Wurtman RJ, Regan M, Ulus I, Yu L. Effect of oral CDP-choline on plasma choline and uridine levels in humans. Biochem Pharmacol. 2000;60(7):989-992.
- Bruce SE, Werner KB, Preston BF, Baker LM. Improvements in concentration, working memory and sustained attention following consumption of a natural citicoline-caffeine beverage. Int J Food Sci Nutr. 2014;65(8):1003-1007.
- Parisi V, Manni G, Colacino G, Bucci MG. Cytidine-5'-diphosphocholine (citicoline) improves retinal and cortical responses in patients with glaucoma. Ophthalmology. 1999;106(6):1126-1134.
- Babb SM, Wald LL, Cohen BM, et al. Chronic citicoline increases phosphodiesters in the brains of healthy older subjects: an in vivo phosphorus magnetic resonance spectroscopy study. Psychopharmacology. 2002;161(3):248-254.
Scores and tiers are our independent opinion, formed by applying a published rubric to label data, third-party certifications, and the research record. They are not statements of objective fact about a product and not a lab test. Where we report a brand-specific fact, it comes from a cited source or a public certification; where verification is missing, we say so rather than assume a result.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before starting any supplement regimen.