L Carnitine vs Pre Workout: Which supplement actually works better before exercise India Today Best Time to Take L Carnitine: Morning vs Evening for Better Fat Loss & Performance L Carnitine & Muscle Soreness Relief Advanced Molecular Labs 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