Biomedical Reports Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health Levocarnitine, commonly known as L Carnitine, is a naturally occurring compound that the body produces from the amino acids lysine and methionine. It plays a critical role in energy production by transporting fatty Kidney disease doesn't just affect filtration. It silently drains the nutrients your body needs to survive, repair, and maintain function. These deficiencies don't just make you feel worse. They accelerate kidney damage.