Overview
Phospholipid precursor with cytidine bonus — supports membranes and dopamine.
- Endogenously produced or biosynthesized molecule
- Standardized pharmaceutical- or food-grade supplement
- Combined with cofactors that improve absorption or activity
- Capsule or softgel
- Powder
- Sublingual or buccal
- Liposomal liquid
Forms & variants of Citicoline (CDP-Choline)
Different chemical forms of Citicoline (CDP-Choline) behave differently. Browse each form's mechanism, bioavailability, and best-use context.
Mechanism of action
Splits to choline + cytidine (→ uridine in humans); supports phosphatidylcholine synthesis.
- · Membrane phospholipid synthesis
- · Dopamine receptor density
Effects on the body
Organ system effects
Citicoline (CDP-Choline) acts on central nervous system targets implicated in attention, memory, and neuroprotection.
Evidence-based benefits
Improves attention and memory in older adults
Moderate evidenceAdjunct in cocaine use disorder (limited)
Limited evidencePotential side effects
- · Citicoline (CDP-Choline) is generally well-tolerated at evidence-based doses
- · Mild GI discomfort (nausea, loose stools, or bloating) possible at higher intakes
- · Headache or transient fatigue reported by a small fraction of users
- · Allergic or hypersensitivity reaction (rash, itching, swelling)
- · Sleep disturbance if taken late in the day
- · Discontinue and seek medical advice if symptoms are severe, persistent, or include difficulty breathing
Drug interactions
Safety & non-supplemental interactions
Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.
- ·Discuss with a clinician if you have active liver disease or take hepatotoxic medications.
Supplement interactions
- Omega-3 (EPA/DHA)Membrane fluidity and neuronal signaling support.
- Alpha-GPC or CDP-cholineProvides choline substrate for acetylcholine synthesis.
No specific avoidances listed.
Dosing & bioavailability
Where to buy
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Third-party testedIndependently verified Citicoline (CDP-Choline) — look for USP, NSF, or Informed Sport seals on the label for purity and dose accuracy.Citicoline (CDP-Choline) third party tested NSF
CapsulesPre-measured Citicoline (CDP-Choline) capsules — easiest for travel and consistent daily dosing without scoops or scales.Citicoline (CDP-Choline) capsules
PowderBulk unflavored Citicoline (CDP-Choline) powder — best cost-per-gram and flexible dosing for stacking or mixing into drinks.Citicoline (CDP-Choline) powder unflavored
Best sellersMost-purchased Citicoline (CDP-Choline) products on Amazon — a quick way to see what's reviewed widely before you commit.Citicoline (CDP-Choline) best sellerScientific evidence9Show studiesHide studies
Citicoline for cognitive function in older adults
Spiers PA, et al.
RCT of citicoline in age-related memory decline.
Improved word recall vs placebo.
PubMed: Citicoline (CDP-Choline) — Improves attention and memory in older adults
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PubMed: Citicoline (CDP-Choline) — Adjunct in cocaine use disorder
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PubMed: Citicoline (CDP-Choline) — randomized controlled trial
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PubMed: Citicoline (CDP-Choline) — meta-analysis
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PubMed: Citicoline (CDP-Choline) — pharmacokinetics
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PubMed: Citicoline (CDP-Choline) — dose response
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Google Scholar: Citicoline (CDP-Choline) — clinical evidence
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Cross-database citation index for Citicoline (CDP-Choline) as it relates to "clinical evidence".
Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.