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Limited evidenceBrain & cognition

Choline Bitartrate

The cheapest choline salt. Choline is a genuinely essential nutrient most people under-consume, but there is no trial showing that choline bitartrate improves memory or focus in healthy adults.

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What the science says

  • Choline is an essential and under-consumed nutrient Moderate evidence

    A review of intake data concluded that most adults fall below the adequate intake for choline, which is required for phosphatidylcholine, acetylcholine and methyl-group metabolism. Correcting a genuine shortfall is a nutritional argument, not a nootropic one.

  • Dietary choline and dementia risk Limited evidence

    A prospective cohort study with dose-response meta-analysis found an association between higher dietary choline intake and lower incident dementia, with a non-linear shape. Observational data cannot establish that supplements produce the same effect.

  • Cognitive enhancement Limited evidence

    No randomized controlled trial has shown that choline bitartrate improves memory, attention or mood in healthy people. Trials with positive cognitive results used citicoline or alpha-GPC, which deliver choline to the brain more efficiently.

Dosage & safety

Studied doseAdequate intake for choline is 425 mg/day for women and 550 mg/day for men. Choline bitartrate is roughly 41% choline by weight, so about 1,000–1,300 mg of the salt supplies a day's worth. The tolerable upper intake level for choline is 3,500 mg/day.
SafetyHigh doses cause a fishy body odour, sweating, nausea, diarrhoea and, above the upper limit, low blood pressure. Gut bacteria convert excess choline to TMAO, which has been linked in observational work to cardiovascular risk — relevant mainly at supplemental doses well above dietary intake. People with trimethylaminuria should avoid supplemental choline.

How to take it

TimingSplit into two or three doses across the day rather than one large one, which is what causes the GI effects.
With food?With food; choline bitartrate on an empty stomach commonly causes nausea and diarrhoea.
Worth knowingA fishy body odour is the practical signal you are taking too much - if you get it, cut the dose or switch to alpha-GPC or CDP-choline, which do not produce it.

Frequently asked questions

Does choline bitartrate improve memory?

No trial has shown that choline bitartrate improves memory, attention or mood in healthy people, so the evidence is limited. Positive cognitive trials used citicoline or alpha-GPC instead.

How much choline bitartrate should I take?

The adequate intake for choline is 425 mg/day for women and 550 mg/day for men; choline bitartrate is roughly 41% choline, so about 1,000-1,300 mg of the salt covers a day. Do not exceed the 3,500 mg/day upper limit for choline.

Why does choline make you smell fishy?

A fishy body odour is the classic sign of too much choline, alongside sweating, nausea and diarrhoea. If choline bitartrate causes it, cut the dose or switch to alpha-GPC or CDP-choline, and avoid supplemental choline if you have trimethylaminuria.

Do most people need a choline supplement?

Most adults consume less choline than the adequate intake, and choline is an essential nutrient, which is a moderate-evidence nutritional reason to cover a shortfall. That is not the same as a nootropic benefit.

Scientific references

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