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Nootropics

CDP-Choline (Citicoline)

01 / OVERVIEW

What this compound does

WHAT IT DOES

Citicoline is a natural brain chemical that helps your brain make energy and build cell membranes. It gives your brain the building blocks it needs to stay sharp, especially as you get older or after an injury. Many people take it to improve memory, focus, and mental energy, though results can take a few weeks to notice.

KEY BENEFITS
Better memory and recall
Sharper focus and concentration
Faster mental processing speed
Supports brain recovery after stroke or injury
May slow age-related cognitive decline
BEST FOR
  • • Older adults wanting to protect brain health
  • • Students or professionals needing extra focus
  • • People recovering from a stroke or brain injury
  • • Anyone looking for a general cognitive boost
WHAT TO EXPECT

Some people notice improved focus and mental clarity within 1-2 hours after taking it. For lasting memory and brain health benefits, consistent use over 4-12 weeks is usually needed.

WHO SHOULD AVOID THIS
  • • Pregnant or breastfeeding women (insufficient safety data)
  • • People taking blood thinners like warfarin (possible interaction)
  • • Those with a history of manic episodes (may worsen symptoms)
  • • Children (not well studied)
MYTHS & FACTS
Myth: Citicoline is the same as Alpha-GPC.
Fact: No, they are different choline sources. Citicoline provides both choline and uridine, while Alpha-GPC delivers only choline. Their effects and mechanisms overlap but are not identical.
Myth: You will feel an immediate effect like caffeine.
Fact: Citicoline is not a stimulant. Its effects on cognition are subtle and build up over days to weeks of consistent use.
Myth: It only works for elderly people with memory problems.
Fact: While often studied in age-related decline, healthy young adults can also benefit from improved focus and mental energy, especially during demanding cognitive tasks.
At a glance
Typical dose
250-500 mg/day
Loading: 500-1000 mg/day × 7-14 days for acute neurological situations
Evidence
—
Studies indexed6
How it's made

Production details below.

03 / DOSAGE

How much, when

MAINTENANCE

250-500 mg/day

LOADING PROTOCOL

500-1000 mg/day × 7-14 days for acute neurological situations

Take with or without food; fat intake does not significantly affect absorption but consistent timing is recommended

TIMING

CDP-Choline (Citicoline) — Morning dose

Take with food (Optional, e.g. 'high-fat meal')

02 / EVIDENCE

Peer-reviewed studies

  • PMID: 15241346

    Memory improvement in elderly

    In a 12-week RCT in 349 subjects with age-related cognitive decline, 1000 mg/day citicoline improved memory recall and global cognitive function compared to placebo (p<0.05).

    B
  • Meta-analysis

    Stroke recovery aid

    Meta-analysis of 4 RCTs (n=1372) found that oral citicoline (500-2000 mg/day) started within 24 hours of ischemic stroke improved recovery outcomes (OR 1.33, 95% CI 1.10-1.61).

    A
  • PMID: 25424882

    Focus and attention in healthy adults

    A double-blind crossover trial (n=20) reported that 500 mg citicoline reduced reaction time on sustained attention tasks and improved cognitive flexibility after 28 days.

    B
  • PMID: 17340672

    Brain energy metabolism

    PET imaging study in 14 healthy elderly subjects showed that 1000 mg/day for 6 weeks increased glucose utilization in frontal and temporal lobes, correlating with improved verbal fluency.

    C
  • PMID: 22286600

    Neuroprotection in glaucoma

    An RCT (n=92) found that 1000 mg/day citicoline for 2 years slowed retinal ganglion cell loss in glaucoma patients compared to placebo (p<0.01).

    B
  • PMID: 24893043

    No acute effect on mood

    A single-dose study (n=16) found no significant changes in mood or anxiety after 500 mg citicoline, suggesting effects are cumulative rather than acute.

    C
  • PMID 41547348 · 2026Mechanistic Study

    Gut-brain cholinergic signaling mediates the antiseizure effects of Bacteroides fragilis

    B
  • PMID 37513643 · 2023Observational Study

    Micronutrient Gaps and Supplement Use in a Diverse Cohort of Pregnant Women

    B
  • PMID 33978188 · 2021RCT

    Citicoline and Memory Function in Healthy Older Adults: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial

    B
  • PMID 39592468 · 2024RCT

    The effects of 3-month supplementation with synbiotic on patient-reported outcomes, exercise tolerance, and brain and muscle metabolism in adult patients with post-COVID-19 chronic fatigue syndrome (STOP-FATIGUE): a randomized Placebo-controlled clinical trial

    B
04 / INTERACTIONS

Medicine interactions

  • Antidepressants· SSRI

    May enhance serotonin levels, leading to increased side effects.

    → Consult a healthcare provider before combining.

    MODERATE

  • Antiepileptics· antiepileptic

    May alter seizure threshold.

    → Consult a healthcare provider before use.

    MODERATE

  • Anticoagulants· blood_thinner

    Potential for increased bleeding risk.

    → Monitor closely if taken together.

    LOW

This page is a reference summary, not a prescription. Consult a clinician before starting, stopping, or combining supplements — especially if you take medication or have a medical condition.