L Carnitine for Fat Burning: How It Really Works (Without the Hype) Is L Carnitine the Key to Fat Loss? Protyze Carnitine Shuttle an overview ScienceDirect Topics L Carnitine Liquid 3300mg for Weight Loss: Does It Work? Alvista Official Supplements don't replace the workbut they can support it L Carnitine helps your body turn fat into usable energy, so you can push harder and recover better. Consistency first. Supplements second. Results Didn't another study show carnitine was good for the heart?