Amino Acids for Super Humans, Part IV Purported Ergogenics (2 3): L Carnitine, ALCAR, LCLT, GPLC & Co. 6 Healthy Foods High in 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 500 mg, 60 Caplets (1684) Puritan's Pride 6 Healthy Foods High in L Carnitine L Carnitine Liquid Tropical Punch 1000 mg, 16 oz. NOW Foods Fruitful Yield