What are the Benefits of L carnitine Effervescent Tablets? NIRVASA 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. 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. History of L carnitine: Implications for renal disease Journal of Renal Nutrition L Carnitine in Mitochondria Encyclopedia MDPI What is the role of L carnitine (Levocarnitine) in patients with Chronic Kidney Disease (CKD)?