L Carnitine is Underrated. New Meta Review Reminds Us Why. Do You Know How Long It Takes L carnitine To Start Working? Plix Role of L carnitine in the transport of long chain fatty acids through Download Scientific Diagram 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 ALPHA Supps, L Carnitine Liquid 3000, Cherry Lime Slush, 16 oz Walmart.com