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 L Carnitine helps convert fat into usable energy, making it ideal before workouts or active days. Combined with ACV for added metabolism support. . . . . . . . . . #WorkoutFuel #LCarnitine #FitnessSupport #Vitallfizz Liquid L Carnitine 3000: Metabolism & Energy Support Cutler Nutrition Frontline Formulations L Carnitine Premium Stimulant Free Workout Drink Transforms Fat Into Energy and Supports Muscle Recovery For Men and Women Pina Colada Walmart.com Should I use L Carnitine on rest days or just before workouts?