Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications 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. L Carnitine Linus Pauling Institute Oregon State University L carnitine for metabolism Lifehack Understanding the Role of Carnitine in TPN and IDPN Therapy