L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Carnitine Molecule of the Month September 2003 Your body already makes L Carnitine, so why do people take it as a supplement? Because while it helps burn fat for energy, it only works when paired with the right lifestyle., So before you jump on What Is L Carnitine? A Complete Beginner's Guide to Benefits, Sources, L Carnitine and Creatine are both game changers for fitness, but they each shine in different ways! SAVE this as your quick guide! L Carnitine, found in red meat, fish, and chicken, supports fat