The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy. L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe L carnitine for metabolism Lifehack L Carnitine: The Energy Booster Your Body Loves Turn fat into fuel and power up your recovery with one of our favorite performance vitamins. Boosts metabolism & fat burning Frontiers Selenium and thyroid diseases