L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Benefits of Acetyl L Carnitine Simply Supplements Acetyl L Carnitine 500 mg Life Extension Acetyl L Carnitine 500 mg 100 Vegetarian Capsules Essential L Carnitine Optimal Health Systems 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