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 Frontiers Role of Carnitine in Non alcoholic Fatty Liver Disease and Other Related Diseases: An Update The Effect of L Carnitine on Critical Illnesses Such as Traumatic Brain Injury (TBI), Acute Kidney Injury (AKI), and Hyperammonemia (HA) L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians What is Carnitine? Acetyl L Carnitine and Erectile Dysfunction NIH