Hyperthyroidism and Functional Medicine Guide Amy Myers MD AMMD 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 Arazo Nutrition Thorne Research L Carnitine L Carnitine Supplement The Natural Athletes Clinic L Carnitine 3500 Metabolic Nutrition L Carnitine 3500 Metabolic Nutrition