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 L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy. What Is Carnitine and Why Is It Important? The Amino Company L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians