L Carnitine Liquid, Orange, 16 fl oz (473 ml) Does Carnitine from Red Meat Cause Heart Disease? Diagnosis Diet L Carnitine L Tartrate Powder True Protein L Carnitine Vitamin Supplement for Energy and Metabolism Boost What is L Carnitine? L Carnitine is a naturally occurring amino acid derivative that the human body can synthesize itself. It is mainly found in red meat and dairy products. [1] Core Benefits of