Does L Carnitine Work for Fat Loss? A Dietitian Explains L Carnitine XS 4000, Apple Bomb, 15.72 fl oz (465 ml) Jacked Factory Brandclub Jacked Factory Liquid L Carnitine 3000 L Carnitine Supplement for Men & Women Supports Metabolism, Body Recomposition, Cellular Energy & Athletic Performance 32 Servings, Sour Pink Lemonade Best Yohimbe Supplement Ultimate Nutrition For fasted cardio, this combo can make sense if your goal is stubborn fat mobilization + energy support, but the real fat loss driver here is the yohimbine, not the liquid L carnitine.