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 Meet L Carnitine a naturally occurring amino acid that plays a key role in helping the body convert fat into usable energy. It works by transporting fatty acids into your cells to Role of L carnitine in the transport of long chain fatty acids through Download Scientific Diagram The role of carnitine in normal and altered fatty acid metabolism ScienceDirect