What are the recommended dosing regimens for Lcarnitine in adults, hemodialysis patients, and children with primary carnitine deficiency? Biomedical Reports 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 NKF KDOQI Guidelines L Carnitine 1000mg Energy, Metabolism & Fat Burning