L CARNITINE (LEVOCARNITINE) What is it? L Carnitine is a natural amino acid that helps the body turn fat into energy. How it works: Levocarnitine forces fat into the cells to L Carnitine for Fat Loss Supplements in Review Want more energy while supporting fat burn? Let's talk L Carnitine! This week's highlight: L Carnitine A powerful supplement that helps your body turn fat into usable energy supporting weight loss, The Science of Carnitine: How It Works and Why It Matters L Carnitine is Underrated. New Meta Review Reminds Us Why.