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A natural amine, C5H15NO2, often classed in the vitamin B complex, that is a constituent of lecithin and other phospholipids and is a precursor of certain biologically important molecules, such as acetylcholine.


(ˈkəʊliːn; -ɪn; ˈkɒl-)
(Biochemistry) a colourless viscous soluble alkaline substance present in animal tissues, esp as a constituent of lecithin: used as a supplement to the diet of poultry and in medicine for preventing the accumulation of fat in the liver. Formula:[(CH3)3NCH2CH2OH]+OH
[C19: from chole- + -ine2, so called because of its action in the liver]


(ˈkoʊ lin, ˈkɒl in)

a viscous fluid, C5H14N + O, that is a constituent of lecithin and a primary component of the neurotransmitter acetylcholine: one of the B complex vitamins.
[1865–70; < German Cholin (1862) < Greek chol(ḗ) bile + -in -ine2]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.choline - a B-complex vitamin that is a constituent of lecithin; essential in the metabolism of fat
B complex, B vitamin, B-complex vitamin, vitamin B, vitamin B complex, B - originally thought to be a single vitamin but now separated into several B vitamins
References in periodicals archive ?
1, 2015 /PRNewswire/ -- Athletes and physically active people of all ages can benefit from choline not only for their overall health, but also because it supports muscle performance during exercise, and can improve stamina.
6 Reference Price of Polyene Phosphatidyl Choline in Chinese Hospitals in 2014
Liver lipid content has been used as an indicator for evaluation of choline status in animals (McDowell, 2000; Halver, 2002).
Pregnant and lactating women who have elevated requirements for choline and need choline for the optimal development of the fetus, should be certain that the prenatal vitamin they are taking includes choline.
EGGS: They're a great source of protein, and their yolks contain choline, an important nutrient for memory development.
It's most likely not necessary for someone who is vegan and pregnant to take choline supplements if their diet features a variety of foods and contains good sources of choline.
Positron emission tomography (PET) imaging has been used to identify and localize prostate cancer, with Carbon-11 labelled choline ([sup.
Kerry-Ann da Costa, PhD, and colleagues gave 79 men and women a 10-day diet that provided 550 mg choline per day, which is the Institute of Medicine's adequate intake level.
A higher intake of folate, choline, vitamin B2 and betaine was found to have the biggest effect.
This study investigated the effect of Ginkgo Synergy[R] plus Choline (n=33) and OPC Synergy[R] plus Catalyn[R] (n=31) versus placebo (n=33) in a 6-month, randomized, double-blind trial on cognitive and immune functioning among English-speaking, non-smoking, healthy older adults.
He holds three patents and has published monographs on choline chloride and choline bitartrate in the U.
Washington, July 12 ( ANI ): A new study in rats has shown that consuming choline, a vitamin B group nutrient found in foodstuffs like eggs and chicken or beef liver, soy and wheat germ, helps improve long-term memory and attention-holding capacity.