Essential Nutrient

Choline (Various Forms)

Also known as: Choline bitartrate, Alpha-GPC, CDP-choline, Phosphatidylcholine

Evidence

Essential nutrient for brain, liver, and methylation. Most people don't get enough. Available as various forms with different benefits.

Primary uses

Brain health
Liver health
Methylation
Cell membranes

How it works

Precursor to acetylcholine
Required for phosphatidylcholine
Methyl donor
Supports liver fat metabolism

Dosage

Typical range: 250-500mg daily (basic); 300-600mg Alpha-GPC; 250-500mg CDP-Choline
Timing: Morning for cognitive, with meals
With food: Yes
Duration: Safe long-term
Special populations: Cognitive support, liver health, pregnancy

Forms

Alpha-GPC
CDP-Choline
Choline bitartrate

Safety

Common side effects

Fishy body odor at high doses
GI upset
Headache

Contraindications

None significant at normal doses

Evidence notes

Essential nutrient, many people deficient

Grade A: Multiple well-designed human trials support the main claims.

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