Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health How L Carnitine Helps with Fat Metabolism 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 The body L carnitine pools and turnover. Download Scientific Diagram L Carnitine is Underrated. New Meta Review Reminds Us Why.