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Vitamin

Choline (as Choline Chloride)

Also known as: choline chloride, VitaCholine, choline, 2-hydroxyethyltrimethylammonium chloride

B
Evidence

Choline is an essential nutrient required for acetylcholine synthesis, cell membrane integrity, and methyl-group donation via the phosphatidylcholine pathway. It is recognized as an essential nutrient by the National Academy of Medicine with established dietary requirements.

Primary uses

  • Cognitive function support
  • Acetylcholine production
  • Liver health
  • Cell membrane structure
  • Methyl donor function

How it works

  • Precursor for acetylcholine neurotransmitter synthesis
  • Component of phosphatidylcholine in cell membranes
  • Methyl donor via betaine pathway
  • Support for one-carbon metabolism

Dosage

Typical range
400–2000 mg daily, commonly 500–1000 mg
Timing
Can be taken any time of day; no specific timing requirement
With food
May be taken with or without food; absorption may be slightly enhanced with food
Duration
Safe for long-term daily use; benefits develop over weeks to months
Special populations
Pregnant and nursing women have higher requirements (450–550 mg daily). Adequate intake for non-pregnant adults is 425 mg (women) / 550 mg (men)

Forms

  • Choline chloride· 70/100
  • Alpha-GPC· 70/100
  • CDP-choline· 70/100
  • Phosphatidylcholine· 70/100
  • Choline bitartrate· 70/100

Safety

Common side effects

  • Fishy body odor (in high doses, related to TMAO production)
  • Gastrointestinal upset (nausea, diarrhea)
  • Headache (rare)

Contraindications

  • Individuals with trimethylaminuria (TMAU) should avoid high doses
  • Caution in those with family history of cardiovascular disease (high TMAO levels may be concerning)

Evidence notes

Choline is an established essential nutrient with well-characterized roles in cognition and liver health. Good evidence supports benefits for memory and cognitive function in deficient populations. Most studies use doses of 400–2000 mg daily. Evidence for cognitive enhancement in replete individuals is more modest (grade B rather than A).

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.