L Carnitine as Pre Workout Supplement: Guide The Science of Good Health Taking a preworkout AND carnitine? It is important to get the timing of each supplement right to get the best results with both. Watch as Phil explains the best way to combine them. , #preworkout Benefits of Pre Workout Supplement War Choice Nutrition Liquid L Carnitine supports fat metabolism and energy production by helping your body turn stored fat into usable fuel. Fast absorbing, stimulant free, and zero sugar or calories, it's a great pre workout option to boost Add that l carnitine to the pre