L carnitine is a compound that plays a crucial role in the metabolism of fatty acids. It helps transport long chain fatty acids into the mitochondria of cells, where they can be oxidized and used as a Mitochondrial control of fuel switching via carnitine biosynthesis Science LCarnitine Reduces Oxidative Stress and Promotes Cells Differentiation and Bone Matrix Proteins Expression in Human OsteoblastLike Cells Terruzzi 2019 BioMed Research International Wiley Online Library Acetyl L Carnitine, ALC Green Organic Supplements