Carnitine: the claims and why it may not work L Carnitine and Heart Disease Natural Health Research The Benefits (and Limitations) of L Carnitine for Fat Loss Can L Carnitine Help Your Heart? Exploring Its Benefits and Risks The Dr Kumar Discovery 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.