Precision Amino Peach Mango Tea (25 Servings) Transparent Labs CREATINE HMB Benefits of Acetyl L Carnitine Simply Supplements 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 Thyroid What is carnitine? Carnitine is produced in the body from the amino acid lysine and naturally occurs in some foods. It supports energy metabolism and muscle function, which are important