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 is not a magic fat burner It won't melt fat, build muscle, or replace hard work. The only thing it burns is your money Stick to the basics Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health L Carnitine Linus Pauling Institute Oregon State University