L Carnitine 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 L carnitine containing Food Groups Healthy Products Containing Stock Vector (Royalty Free) 2219112733 Shutterstock A Beginner's Guide to L Carnitine Wonder Paws Foods High in L Carnitine for Energy and Health Marnys Now Foods, Acetyl L Carnitine, 500mg, 100 Veg Caps Natural Doctor