Acetyl L Carnitine 500mg Amino Acid Supplement Nature's Best L Carnitine Vitamin Supplement for Energy and Metabolism Boost 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 Health Benefits Carnitine Infographic Including Deficiency Stock Vector (Royalty Free) 364114724 Shutterstock