Dietary l carnitine accelerates atherosclerosis and inhibits reverse Download Scientific Diagram Frontiers Effects of L carnitine supplementation on lipid profile in adult patients under hemodialysis: a systematic review and meta analysis of RCTs Vista de Effect of different levels of L carnitine and lysine methionine on broiler blood parameters Revista MVZ Crdoba 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.