L Carnitine Benefits for Fat Burning and How to Use ICONFIT L Carnitine 500 mg 60 tablets Chicago Health Foods Now Foods Acetyl L Carnitine 500 mg 200 vegetarian capsules Miss Lamonique What is L Carnitine? L Carnitine is a naturally occurring amino acid derivative that the human body can synthesize itself. It is mainly found in red meat and dairy products. [1] Core Benefits of L carnitine known as the energy nutrients, provides massive benefits to your heart and works best with Alpha Lipoic Acid.