What is L Carnitine? L Carnitine is a naturally occurring amino acid derivative that the human body can synthesize itself. It is mainly found in red meat and dairy products. [1] Core Benefits of Did you know L Carnitine is also in food, mainly from red meat. However, if you're mainly eating white meat, fruits and veggies, you might not be getting enough. Swipe left to see New evidence lifts the stakes on the meat vs fish debate Role of carnitine in disease Nutrition & Metabolism Springer Nature Link L Carnitine Linus Pauling Institute Oregon State University