Progression of atherosclerosis with carnitine supplementation: a randomized controlled trial in the metabolic syndrome Nutrition & Metabolism Springer Nature Link How Much L Carnitine Per Day: Expert Guide The Science of Good Health Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis 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: Heart Disease's Chemical Culprit? KQED