L Carnitine in Mitochondria Encyclopedia MDPI L Carnitine is an amino acid found in high concentrations in muscle, heart, and liver tissues. Inside the cells, L Carnitine transports fatty acids into the mitochondria for energy production (i.e., ATP) and reduces Carnitine deficiency and liver cirrhosis. Download Scientific Diagram The Science of Carnitine: How It Works and Why It Matters L Carnitine Non alcoholic fatty liver disease and its relationship with cardiovascular disease and other extrahepatic diseases Gut