L Carnitine as Pre Workout Supplement: Guide The Science of Good Health Oxyenergys L Carnitine. My go to pre post workout supplement. Pre workout I usually take it before my workout session for energy production. Post workout Ill take it the day after my workout L Carnitine Liquid 3300mg for Weight Loss: Does It Work? Alvista Official L Carnitine: Benefits, Uses, and Side Effects Lifespan Research Institute L Carnitine doesn't magically burn fat, it helps your body use fat as energy. Combine it with training and consistency, and you'll feel the difference @Marybosch shows us how L Carnitine will boost your 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