L-Carnitine

What is L-Carnitine?

L-Carnitine is a naturally occurring amino acid derivative that is synthesized in the human body from the amino acids lysine and methionine. It plays an important role in the metabolism of fatty acids, as it transports long-chain fatty acids into the mitochondria where they are oxidized for energy production.

L-Carnitine is also available as a dietary supplement, and it is often marketed as a weight loss and athletic performance enhancer. However, the evidence supporting these claims is mixed and limited. Some studies suggest that L-Carnitine supplementation may improve exercise performance, reduce muscle damage, and aid in weight loss, particularly in people with Carnitine deficiencies. However, other studies have not found significant benefits of L-Carnitine supplementation in these areas.

It is generally considered safe when taken at recommended doses, but high doses can cause side effects such as nausea, vomiting, diarrhea, and abdominal cramps. People with certain medical conditions, such as kidney disease, should consult their healthcare provider before taking L-Carnitine supplements.

See also: all definitions