L Carnitine and Sleep: Does It Affect Rest or Sleep Quality? 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. RSP Nutrition Liquid L Carnitine Weight Management Formula, Berry, 16 fl oz, 31 Servings Walmart.com L Carnitine in Mitochondria Encyclopedia MDPI 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