Carnitine: the claims and why it may not work Amazon.com: Acetyl L Carnitine 1,000mg Per Serving, 150 Capsules (ALCAR for Brain Function Support, Memory, Attention, and Stamina) Acetyl L Carnitine that is Third Party Tested by Double Wood : Everything Else Momentous Acetyl L Carnitine 60 Servings 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 L Carnitine doesnt magically burn fat, it helps your body use fat as energy. Combine it with training and consistency, and youll feel the difference @Marybosch shows us how L Carnitine will boost The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation