Phosphatidylcholine
The main phospholipid of cell membranes and the body's primary choline reservoir, with RCT data in ulcerative colitis.
Pharmacology
Contents
WHAT IS PHOSPHATIDYLCHOLINE?
Detailed overview
Phosphatidylcholine (PC) is the principal phospholipid of cell membranes and the body's primary choline reservoir, feeding the synthesis of acetylcholine, betaine and membrane building blocks. As an amphipathic molecule it forms the backbone of the lipid bilayer and is essential for liver fat export (VLDL) and the integrity of the intestinal mucus barrier. The strongest human evidence is not for cognition but for the gut: several randomized trials of a delayed-release formulation (LT-02) improved disease activity in ulcerative colitis. Cognitive or anti-dementia benefits from supplementation rest on weak evidence. It is widely available as a dietary and supplement ingredient (soy or egg lecithin) and is an essential nutrient.
Mechanism
Membrane phospholipid + choline reservoir
Evidence
Multiple RCTs (ulcerative colitis)
Legal status
Dietary supplement / food ingredient
Receptor profile
- Cell membrane phospholipids (structural)Strong
- Acetylcholine synthesis (choline donor)Moderate
- CDP-choline (Kennedy) pathwayModerate
- Liver fat metabolism (VLDL export)Moderate
Safety
Side effects, stop signs, contraindications
Side effects · 5
- Gastrointestinal complaints: bloating, nausea, diarrhea, increased salivation
- Bacterial breakdown of choline produces trimethylamine (TMA), which can cause a fishy body odor in sensitive individuals
- High doses may cause sweating, drooling or mild drop in blood pressure from cholinergic excess
- Injectable (lipolytic) forms can cause local pain, swelling and bruising at the injection site
- Evidence for marketed dementia or cognition claims is weak
Contraindications · 4
- Trimethylaminuria (fish-odor syndrome): increased choline intake may worsen symptoms
- Known soy or egg lecithin allergy (the most common PC sources)
- Injectable lipolytic use is not validated and should be avoided without medical supervision
- Pregnancy and breastfeeding: dietary amounts are fine, but discuss high-dose supplementation with your doctor
Related Nootropics
Same therapeutic category
Studies
Related research and clinical findings
Retarded release phosphatidylcholine benefits patients with chronic active ulcerative colitis
Stremmel W, et al.
Delayed release phosphatidylcholine in chronic-active ulcerative colitis: a randomized, double-blinded, dose finding study
Stremmel W, et al.
First multicenter study of modified release phosphatidylcholine 'LT-02' in ulcerative colitis: a randomized, placebo-controlled trial in mesalazine-refractory courses
Karner M, et al.
Modified-Release Phosphatidylcholine (LT-02) for Ulcerative Colitis: Two Double-Blind, Randomized Trials
Dignass A, et al.
Phosphatidylcholine supplementation in pregnant women consuming moderate-choline diets does not enhance infant cognitive function: a randomized, double-blind, placebo-controlled trial
Cheatham CL, et al.
FAQ
FAQ
The main phospholipid of cell membranes and the body's primary choline reservoir, with RCT data in ulcerative colitis.
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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.