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. 6 potential benefits of l carnitine Good Food Didn't another study show carnitine was good for the heart? L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy. Carnitine Wikipedia Benefits of Acetyl L Carnitine Simply Supplements