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 What foods are rich in L carnitine (Levocarnitine)? Total L Carnitine food sources (per 100 gm), Non vegetarian:, Beef steak, cooked: 56 162 mg (depending on cuts and cooking), Ground beef, cooked: 75 86 mg, Pork, cooked (100 gm): 25 61 mg, Mutton Beef nutrition: calories, carbs, GI, protein, fiber, fats 6 Healthy Foods High in L Carnitine