Nutritional Supplement

Lecithin/Phosphatidyl Choline

When medical researchers use the term “lecithin,” they are referring to a purified substance called phosphatidyl choline (PC) that belongs to a special category of fat-soluble substances called phospholipids.


1. Wilcken DEL, Wilcken B, Dudman NP, Tyrrell PA. Homocystinuria—the effects of betaine in the treatment of patients not responsive to pyridoxine. N Engl J Med 1983;309:448-53.

2. Jancin B. Amino acid defect causes 20% of atherosclerosis in CHD. Fam Pract News 1994(Oct 15):7.

3. Olthof MR, Brink EJ, Katan MB, Verhoef P. Choline supplemented as phosphatidylcholine decreases fasting and postmethionine-loading plasma homocysteine concentrations in healthy men. Am J Clin Nutr 2005;82:111-7.

4. Olthof MR, van Vliet T, Boelsma E, Verhoef P. Low dose betaine supplementation leads to immediate and long term lowering of plasma homocysteine in healthy men and women. J Nutr 2003;133:4135-8.

5. Childs MT, Bowlin JA, Ogilvie JT, et al. The contrasting effects of a dietary soya lecithin product and corn oil on lipoprotein lipids in normolipidemic and familial hypercholesterolemic subjects. Atherosclerosis 1981;38:217-28.

6. Knuiman JT, Beynen AC, Katan MB. Lecithin intake and serum cholesterol. Am J Clin Nutr 1989;49:266-8.

7. Wilson TA, Meservey CM, Nicolosi RJ. Soy lecithin reduces plasma lipoprotein cholesterol and early atherogenesis in hypercholesterolemic monkeys and hamsters: beyond linoleate. Atherosclerosis 1998;140:147-53.

8. Oosthuizen W, Vorster HH, Vermaak WJ, et al. Lecithin has no effect on serum lipoprotein, plasma fibrinogen and macro molecular protein complex levels in hyperlipidaemic men in a double-blind controlled study. Eur J Clin Nutr 1998;52:419-24.

9. Shaw GM, Carmichael SL, Yang W, et al. Periconceptional dietary intake of choline and betaine and neural tube defects in offspring. Am J Epidemiol 2004;160:102-9.

10. Little A, Levy R, Chuaqui-Kidd P, Hand D. A double-blind, placebo controlled trial of high-dose lecithin in Alzheimer's disease. J Neurol Neurosurg Psychiatry 1985;48:736-42.

11. Gauthier S, Bouchard R, Lamontagne A, et al. Tetrahydroaminoacridine-lecithin combination treatment in patients with intermediate-stage Alzheimer's disease. Results of a Canadian double-blind, crossover, multicenter study. N Engl J Med 1990;322:1272-6.

12. Chatellier G, Lacomblez L. Tacrine (tetrahydroaminoacridine; THA) and lecithin in senile dementia of the Alzheimer type: a multicentre trial. Groupe Francais d'Etude de la Tetrahydroaminoacridine. BMJ 1990;300:495-9.

13. Fitten LJ, Perryman KM, Gross PL, et al. Treatment of Alzheimer's disease with short- and long-term oral THA and lecithin: a double-blind study. Am J Psychiatry 1990;147:239-42.

14. Eagger SA, Levy R, Sahakian BJ. Tacrine in Alzheimer's disease. Lancet 1991;338:50-1 [letter; comment].

15. Toouli J, Jablonski P, Watts JM. Gallstone dissolution in man using cholic acid and lecithin. Lancet 1975;ii:1124-6.

16. Tuzhilin SA, Dreiling D, Narodetskaja RV, Lukahs LK. The treatment of patients with gallstones by lecithin. Am J Gastroenterol 1976;165:231-5.

17. Holan KR, Holzbach T, Hsieh JYK, et al. Effect of oral administration of ‘essential' phospholipid, 8-glycerophosphate, and linoleic acid on biliary lipids in patients with cholelithiasis. Digestion 1979;19:251-8.

18. Gaby, AR. Nutritional Medicine. Concord, NH: Fritz Perlberg Publishing, 2011.

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