Definition of carnitine
: a quaternary ammonium compound C7H15NO3 that is present especially in vertebrate muscle, that in the levorotatory form is involved in the transfer of fatty acids across mitochondrial membranes, and in humans is obtained from food (such as meat or milk) or is synthesized chiefly in the liver and kidneys from a lysine derivative
Recent Examples of carnitine from the Web
Neither is against doping rules, although amounts of L-carnitine greater than 50 milliliters within a six-hour period are.
The Sunday Times reported Salazar’s fascination with infusions of l-carnitine, which is an amino acid that is not banned by USADA but infusions of more than 50 milliliters are prohibited.
The report alleges Ritzenhein received a larger L-carnitine infusion than is allowed because of the amount of time the infusion took.
As previously reported by The Times of London, the report also said that Galen Rupp, an Olympic silver medalist, and Mo Farah of Britain, one of the most successful runners in Olympic history, also received infusions of L-carnitine.
The nutraceutical, invented in 1997 by iconoclastic UC Berkeley biochemist Bruce Ames, is a patented combo of three common health-food store supplements: calcium, alpha lipoic acid, and acetyle l-carnitine.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'carnitine'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of carnitine
International Scientific Vocabulary, from Latin carn-, caro
First Known Use: circa 1922See Words from the same year
Medical Definition of carnitine
: a quaternary ammonium compound C7H15NO3 that is present especially in vertebrate muscle, is involved in the transfer of fatty acids across mitochondrial membranes, and in humans is obtained from food (as meat or milk) or is synthesized from a lysine derivative
Learn More about carnitine
Britannica.com: Encyclopedia article about carnitine
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