L Carnitine For Weight Loss: 10 Key Benefits, Diet Plan, Dosage BSM Partners Recent paper review L carnitine and betaine supplementation 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 Is L Carnitine? A Complete Beginner's Guide to Benefits, Sources, 6 Healthy Foods High in L Carnitine What even is carnitine?? Carnitine is a "conditionally" essential amino acid that becomes essential during pregnancy. What does this mean? You must get carnitine through food! The best sources are red