Levocarnitine, commonly known as L Carnitine, is a naturally occurring compound that the body produces from the amino acids lysine and methionine. It plays a critical role in energy production by transporting fatty L Carnitine Does L Carnitine Cause Heart Problems? New study links L carnitine in red meat to heart disease Harvard Health l Carnitine and heart disease ScienceDirect Effects of L carnitine and its derivatives in cardiovascular disease. Download Scientific Diagram