L CARNITINE for fat loss? A quick summary and understanding of this popular but misunderstood supplement 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. 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 1000 mg Tablets Energy & Fat Metabolism Support* NOW Supplements L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe