Nootropic profile
Phosphatidylcholine
Phosphatidylcholine is the most abundant phospholipid in human cell membranes and a major dietary source of choline. It is essential for maintaining brain cell membrane integrity, producing acetylcholine, and supporting liver function, memory, and overall cognitive health.
Best for
Educational only: this is not medical advice. Always check with a qualified healthcare professional before starting any supplement.
What is Phosphatidylcholine?
Phosphatidylcholine (PC) is a phospholipid consisting of a glycerol backbone, two fatty acid chains, a phosphate group, and a choline head group. It is the most prevalent phospholipid in eukaryotic cell membranes, typically comprising 40-60% of the total phospholipid content.
What it does for you
Community and editorial ratings, out of 5:
How to take it
- Typical dose: 420-3600 mg per day, depending on the form and purpose
- For cognitive support: 1200-2400 mg per day of PC supplement
- Adequate intake of choline: 550 mg/day for men, 425 mg/day for women (PC provides roughly 13% choline by weight)
- Polyenylphosphatidylcholine (PPC): 900-1800 mg per day for liver support
- Timing: Best taken with meals containing fat to improve absorption
Watch out for
- Side effects: Generally well tolerated. High doses may cause gastrointestinal symptoms including nausea, diarrhoea, and stomach discomfort.
- TMAO: Gut bacteria can convert choline from PC into trimethylamine, which is oxidised to TMAO in the liver. Elevated TMAO has been associated with...
- Fishy body odour: Very high doses of choline from any source may cause a fishy body odour due to trimethylamine accumulation.
- Drug interactions: No major interactions reported at standard doses. Those on anticholinergic medications should be aware of potential opposing effects.
- Pregnancy: Choline is an essential nutrient during pregnancy. PC supplementation is generally considered safe and may be beneficial for foetal brain...
The science, if you're curious.
- Phosphatidylcholine is cleaved by phospholipase enzymes to release free choline, which is then acetylated by choline acetyltransferase to produce...
- PC integrates directly into neuronal cell membranes, maintaining fluidity and supporting the function of membrane-bound proteins including receptors,...
- As a component of myelin sheaths, PC contributes to the insulation of nerve fibres, enabling rapid and efficient signal transmission throughout the nervous...
- PC is essential for the assembly and secretion of very-low-density lipoproteins (VLDL) in the liver, supporting healthy fat metabolism and reducing hepatic...
Where to find it
- Egg yolks: One of the richest dietary sources of phosphatidylcholine
- Soybeans: Major commercial source for PC supplements (as part of soy lecithin)
- Sunflower seeds: Sunflower-derived PC is a popular allergen-friendly alternative to soy
- Organ meats: Liver and brain tissue are particularly rich in PC
- Fish: Contains moderate amounts of PC
- Supplements: Available as isolated PC capsules, softgels, liposomal formulations, and as a component of lecithin products
Frequently asked
Phosphatidylcholine is the most abundant phospholipid in human cell membranes and a major dietary source of choline. It is essential for maintaining brain cell membrane integrity, producing acetylcholine, and supporting liver function, memory, and overall cognitive health.
The main benefits people report from Phosphatidylcholine are: Cognitive Enhancement, Energy, Focus, Longevity, Memory, Mood.
Typical dose: 420-3600 mg per day, depending on the form and purposeFor cognitive support: 1200-2400 mg per day of PC supplementAdequate intake of choline: 550 mg/day for men, 425 mg/day for women (PC provides roughly 13% choline by weight)Polyenylphosphatidylcholine (PPC): 900-1800 mg per day for l...
Side effects: Generally well tolerated. High doses may cause gastrointestinal symptoms including nausea, diarrhoea, and stomach discomfort.TMAO: Gut bacteria can convert choline from PC into trimethylamine, which is oxidised to TMAO in the liver. Elevated TMAO has been associated with...Fishy body o...
Phosphatidylcholine is cleaved by phospholipase enzymes to release free choline, which is then acetylated by choline acetyltransferase to produce...PC integrates directly into neuronal cell membranes, maintaining fluidity and supporting the function of membrane-bound proteins including receptors,......
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