L-Carnitine

Definition

L-Carnitine is a substance that helps the body turn fat into energy. It is naturally produced in the liver and kidneys and stored in muscles, heart, brain, and sperm.

Scientific / Technical Definition

L-Carnitine is a quaternary ammonium compound involved in the metabolism of most mammals, plants, and some bacteria. It facilitates the transport of fatty acids into mitochondria for beta-oxidation, playing a crucial role in energy production.

Benefits

• Enhances exercise performance
• Supports heart health
• Improves recovery from exercise
• Aids in weight loss by increasing fat metabolism
• May improve brain function

Examples

• Red meat, especially beef
• Fish like cod and haddock
• Chicken
• Milk and dairy products
• L-Carnitine supplements

Additional Information

• Potential side effects include: Nausea, vomiting, stomach upset, and diarrhea. Some people might also experience a fishy odor in their urine or breath.

Related Terms

• Coenzyme Q10
• Creatine
• Branched-Chain Amino Acids (BCAAs)
• Mitochondria
• Fat Metabolism

References

• A systematic review and meta-analysis on the effect of L-carnitine on exercise performance
• Role of carnitine in disease.