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 Forest Vitamin L CARNITINE 500 mg 100 Tablets Forest Vitamin Carnitine: Top 3 Anti Aging Benefits of This Super Nutrient L Carnitine Benefits: A Complete Research Based Guide 6 Healthy Foods High in L Carnitine L Carnitine Linus Pauling Institute Oregon State University