Choline
Essential nutrient and acetylcholine precursor: memory, cell membranes and liver function.
Pharmacology
Contents
WHAT IS CHOLINE?
Detailed overview
Choline is a water-soluble, vitamin-like essential nutrient that the body can synthesize only in limited amounts, so it must also be obtained from the diet (egg yolk, liver, meat, soy). It acts through three main routes: it is converted to acetylcholine in nerve terminals (cholinergic neurotransmission), incorporated into phosphatidylcholine to build cell membranes, and oxidized to betaine to serve as a methyl donor in homocysteine metabolism. Observational data link higher choline intake to better cognitive performance and healthier brain white matter, and adequate choline during pregnancy is important for fetal brain development. At dietary amounts it is a safe, well-tolerated nutrient.
Mechanism
Acetylcholine and phosphatidylcholine precursor
Evidence
Moderate (observational + pregnancy RCTs)
Legal status
Essential nutrient / dietary supplement
Receptor profile
- Acetylcholine synthesisStrong
- Phosphatidylcholine / cell membranesStrong
- Betaine / methyl donation (homocysteine metabolism)Moderate
Safety
Side effects, stop signs, contraindications
Side effects · 5
- Fishy body odor at high intake (from increased trimethylamine formation)
- Drop in blood pressure at large doses
- Increased sweating
- Diarrhea, nausea or other gastrointestinal upset
- Well tolerated at dietary amounts; side effects typically appear only at large supplemental doses
Contraindications · 4
- Trimethylaminuria (fish odor syndrome): high choline intake worsens the body odor
- Avoid megadosing: above ~3.5 g/day hypotension, sweating and fishy odor can occur (adult upper limit)
- Medical supervision advised in kidney disease or trimethylamine metabolism disorders
- In pregnancy choline is an important and recommended nutrient, but high-dose supplementation should be discussed with a doctor
Related Nootropics
Same therapeutic category
Studies
Related research and clinical findings
The relation of dietary choline to cognitive performance and white-matter hyperintensity in the Framingham Offspring Cohort
Poly C, Massaro JM, Seshadri S, Wolf PA, Cho E, Krall E, Jacques PF, Au R
Is dietary choline intake related to dementia and Alzheimer's disease risks? Results from the Framingham Heart Study
Yuan J, Liu X, Liu C, Ang AFA, Massaro J, Devine SA, Auerbach SH, Blusztajn JK, Au R, Jacques PF
Efficacy of Maternal Choline Supplementation During Pregnancy in Mitigating Adverse Effects of Prenatal Alcohol Exposure on Growth and Cognitive Function
Jacobson SW, Carter RC, Molteno CD, Stanton ME, Herbert JS, Lindinger NM, Lewis CE, Dodge NC, Hoyme HE, Zeisel SH, Meintjes EM, Duggan CP, Jacobson JL
Prenatal and Postnatal Choline Supplementation in Fetal Alcohol Spectrum Disorder
Ernst AM, Gimbel BA, de Water E, Eckerle JK, Radke JP, Wozniak JR
FAQ
FAQ
Essential nutrient and acetylcholine precursor: memory, cell membranes and liver function.
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Structure & chemistry
The information here is strictly for educational and scientific purposes. It does not replace medical advice or clinical consultation, and it does not encourage illegal substance or pharmaceutical use. Data is sourced. When in doubt, consult your doctor.