L Carnitine is Underrated. New Meta Review Reminds Us Why. 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. Effect of l carnitine supplementation on renal anemia in patients on hemodialysis: a meta analysis International Urology and Nephrology Springer Nature Link Understanding the Role of Carnitine in TPN and IDPN Therapy Iron deficiency Without Anemia Why It Matters And How To Diagnose It Three Resources Tom Wade MD