Understanding the Role of Carnitine in TPN and IDPN Therapy L Carnitine Benefits for Fat Burning and How to Use ICONFIT 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. Boost Weight Loss & Improve Heart Health L Carnitine: Benefits, Risks, and Its Role in Fitness and Weight Loss WellnessPulse L carnitine tartrate supplementation in the fight against infectious disease