L Carnitine 500mg mL injectable, 30mL Defy Medical Guide to Nutrition for Chronic Pain: What You Eat Makes a Difference Associate Professor Kaustuv Bhattacharya 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 Rev Electron Biomed Electron J Biomed 2006;1:33 41 Diaz et al. L CARNITINE INDUCED MODULATION L Carnitine Powder L Carnitine Supplements NOW Supplements