Understanding the Benefits and Uses of Carnitine in Health and Fitness Fitness Health Most people talk about carnitine like it is one supplement. It is not. Acetyl L carnitine and L carnitine L tartrate do different jobs, and picking the wrong one for the wrong goal is where people Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis 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