L Carnitine Is It Good or Bad for your Heart? Hammer Nutrition MuscleBlaze L Carnitine L Tartrate Capsules L Carnitine Benefits for Fat Burning and How to Use ICONFIT 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 The Right Way to Take L Carnitine to Boost Your Training L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy.