L-Carnitine — answers to carnitine
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A compound made by the body from the amino acids lysine and methionine, involved in transporting fatty acids into cells for energy production.
Why it’s used
Taken to support fat metabolism and exercise performance, and used medically to treat rare primary carnitine deficiency.
What the evidence is for
supporting fatty acid transport in diagnosed carnitine deficiency.
What the evidence says
According to NIH ODS, carnitine supplementation is established as effective for treating diagnosed primary carnitine deficiency, a rare genetic condition. For general fat metabolism or exercise performance in healthy people, clinical trial results are mixed and the overall evidence for a meaningful effect is weak.
Dose studied
500–2000 mg — daily doses studied for exercise performance and fat metabolism.
Context
Exercise performance studies have commonly used daily oral doses of roughly 500 to 2000 milligrams over periods of days to weeks, with inconsistent results.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.