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 L Carnitine Carnitine: the claims and why it may not work The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation Your dog's heart works hard and L Carnitine helps fuel every beat. This natural protein like substance supports healthy heart function by helping carry fatty acids to where the body needs them most. The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation