Carnitine: the claims and why it may not work L Carnitine: Benefits & Supplementation Integrated Mobile Health PDF) The Role of L Carnitine in Distance Athletes 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 L Tartrate: 8 Key Benefits Dr. Lam