The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link 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 L Carnitine. Fat burning hero or just another hype supplement? If weight loss is your goal, L Carnitine might support your journey, but it's not a magic fix Here's what it actually does Acetyl L Carnitine vs L Carnitine: 4 Key Differences Momentous