L Carnitine: Benefits, Uses, and Side Effects Lifespan Research Institute All You Need To Know About L Carnitine HealthKart Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis L Carnitine doesnt magically burn fat, it helps your body use fat as energy. Combine it with training and consistency, and youll feel the difference @Marybosch shows us how L Carnitine will boost L Carnitine is an amino acid that plays a role in energy production, by helping transport fatty acids into the mitochondria. Mitochondria are tiny powerhouses within cells that make energy.