Liquid L Carnitine 3000 Nutrex Amino Acids The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation Carnitine has a central role in fat metabolism. During the overnight fasted state and in exercise performed at low to moderate intensity, long chain fatty acids serve as the primary energy source for L Carnitine functions as a cofactor for long chain fatty acids across Download Scientific Diagram How L Carnitine Helps Turn Fat Into Energy (Without Stimulants)