L-Carnitine

Overview:

L-carnitine is a naturally occurring amino acid derivative that plays a crucial role in energy production. It is commonly used in supplements to support physical performance and weight management.

Sources:

L-carnitine is found in animal products such as meat, fish, and dairy. It is also synthesized in the body from the amino acids lysine and methionine. Supplements are available in various forms, including L-carnitine, acetyl-L-carnitine, and propionyl-L-carnitine.

Functions:

Energy Production: L-carnitine transports long-chain fatty acids into the mitochondria, where they are oxidized to produce energy.

Exercise Performance: It may improve exercise performance by increasing energy availability and reducing muscle fatigue.

Weight Management: L-carnitine supplementation can support weight loss by enhancing fat metabolism.

Deficiency:

Deficiency is rare but can occur in individuals with genetic disorders affecting carnitine metabolism, chronic illnesses, or those following strict vegetarian or vegan diets. Symptoms include muscle weakness, fatigue, and hypoglycemia.

Toxicity:

L-carnitine is generally safe when taken in recommended doses. High doses can cause side effects such as nausea, vomiting, diarrhea, and a fishy body odor. It is advisable to consult with a healthcare provider before starting supplementation.