Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health Most people talk about carnitine like it is one supplement. It is not. Acetyl L carnitine and L carnitine L tartrate do different jobs, and picking the wrong one for the wrong goal is where people PDF) History of L carnitine: Implications for renal disease JCI l Carnitine in omnivorous diets induces an atherogenic gut microbial pathway in humans