Didn't another study show carnitine was good for the heart? Amazon.com: Superior Labs Acetyl L Carnitine 500 mg, High Potency ALCAR, Pure Non GMO, Zero Synthetic Additives, Maximum Absorption, Energy & Fat Metabolism, Brain, Nerve & Cellular Detox Support, (200 Veg Caps) : Everything Acetyl L Carnitine 1500mg, Brain Function, Fat Metabolism, Energy Production 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 L Carnitine 250 mg. Windmill Vitamins