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 L Carnitine benefits Usefulness of Carnitine Supplementation for the Complications of Liver Cirrhosis L carnitine reduces ammonia levels and alleviates covert encephalopathy: A randomized trial