Vitamin B5 B6 Energy Metabolism NUTREND CARNITINE 100 000, 1000ml Orange Flavor Liquid Carnitine Amazon.com: NutraKey L Carnitine 3000mg, No Sugar, Gluten Free, Turn Into Fuel, (Sour Gummy Worms) 31 Servings : Health & Household 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 Healthy According to a randomized, double blind, placebo controlled clinical trial published in Elsevier journal Research in Autism Spectrum Disorders (2013), l carnitine supplementation demonstrated a significant therapeutic benefit in children