L Carnitine Benefits for Fat Burning and How to Use ICONFIT L Carnitine Is it Worth Taking? Ideal Nutrition When to Take L Carnitine for Weight Loss & Maximize Results 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 Turn fat into fuel with our L Carnicut As a dietary supplement, one tablespoon (15 ml) of L Carnicut can be taken up to 2 times daily, preferably on an empty stomach.