Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health L Carnitine and Sleep: Does It Affect Rest or Sleep Quality? L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians L Carnitine doesn't magically burn fat, it helps your body use fat as energy. Combine it with training and consistency, and you'll feel the difference @Marybosch shows us how L Carnitine will boost your Carnitine: the claims and why it may not work 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.