Understanding the Benefits and Uses of Carnitine in Health and Fitness Fitness Health Amazon.com: NOW Foods Supplements, Acetyl L Carnitine 500 mg, Amino Acid, Brain And Nerve Cell Function*, 200 Veg Capsules : Health & Household Acetyl L Carnitine 500mg Amino Acid Supplement Nature's Best 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 for metabolism Lifehack