L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Liquid L Carnitine Energy, Metabolism & Fat Burning Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get L Carnitine Complex 2200mg 180 High Strength Vegan Capsules 1.5 Month Supply How L Carnitine Helps with Fat Metabolism