Best Time to Take L Carnitine: A Complete Guide The Science of Good Health Injectable L Carnitine: Does It Really Work for Fat Loss? L Carnitine Benefits: Why GreenOpia L Carnitine is a Game Changer for GreenOpia Naturals 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 Pre gym, post work, early morning this fits the routine. L Carnitine 3000mg, zero sugar. Choose your flavour and go.