L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage What is L Carnitine & What is it's Biggest Benefit? Dr.Berg L Carnitine 1000mg Energy, Metabolism & Fat Burning L Carnitine L Tartrate: 8 Key Benefits Dr. Lam 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