A phospholipid from sunflower lecithin, the same material cell walls are made from.
Why it’s used: Forms the tiny liposome bubbles that protect each nutrient through digestion.
Phosphatidylcholine is a phospholipid, a type of fat with a water-loving head and a fat-loving tail. That dual nature lets it arrange itself into thin double layers, which is exactly how cell membranes are built. It is the most common phospholipid in the body and an important dietary source of choline.
In food it is found in eggs, meat, fish, soya and seeds. Commercially, it comes from lecithin, a fatty mixture extracted from soya beans or sunflower seeds. Sunflower lecithin is popular in supplements because it avoids soya, a major allergen, making it a good choice for people with a soya allergy.
In liposomal supplements, phosphatidylcholine is the material that forms the liposomes: microscopic bubbles with a phospholipid wall that enclose a nutrient inside. The idea is to protect the nutrient through digestion and help absorption. Studies of liposomal vitamin C, for example, have mostly found higher blood levels than standard vitamin C, though researchers note that evidence on wider effects is limited. On labels, look for phosphatidylcholine, sunflower lecithin or soy lecithin.
3 findings behind this ingredient. Hover a card for the detail and the source.
Randomised, double-blind, placebo-controlled crossover trial in 27 adults given single 500 mg doses. Liposomal vitamin C gave higher peak levels (plasma +27%, white blood cells +20%) and higher 24-hour exposure (plasma +21%) than standard vitamin C.
Randomised three-period crossover trial in 12 healthy volunteers comparing one dose of quercetin with two doses of the lecithin formulation. The phytosome improved solubility and oral absorption without notable side effects.
Open-label, randomised, single-dose, two-way crossover study in healthy fasting adults. Liposomes under 100 nm gave higher Cmax and AUC than standard vitamin C, with no adverse events reported.
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It is a supplement where the nutrient is enclosed in liposomes, tiny bubbles with walls made of phospholipids such as phosphatidylcholine. The wall is designed to protect the nutrient through digestion. Studies of liposomal vitamin C have mostly shown higher blood levels than standard forms.
Both provide phosphatidylcholine. Sunflower lecithin suits people avoiding soya, which is one of the 14 major allergens in the UK. Functionally, both work well for making liposomes.
Not quite. Phosphatidylcholine is a phospholipid that contains choline as part of its structure, so it is a dietary source of choline. The choline content is only a fraction of its weight, so the amount of phosphatidylcholine is not the same as the amount of choline.
Information only, not medical advice. If you take medication, are pregnant or breastfeeding, speak to your GP or pharmacist first.
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