When to Take L Carnitine for Weight Loss & Maximize Results Acetyl L Carnitine 750 mg Tablets 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 L Carnitine: A Fat Loss Myth or Supplement Staple? Muscle Specific Deletion of Carnitine Acetyltransferase Compromises Glucose Tolerance and Metabolic Flexibility: Cell Metabolism