De novo L carnitine biosynthesis. (A) Carnitine is synthesised from the Download Scientific Diagram Amino acids are a team , And they work better together than alone, Weve got options like Amino Acid Blend, L Arginine, L Carnitine, L Lysine, and L Glutaminebut the real magic happens when theyre L Carnitine Linus Pauling Institute Oregon State University L carnintine molecule stock illustration. Illustration of chemistry 130642151 Ingredient Spotlight: L Carnitine Source: Biosynthesised in the body from the amino acids Lysine and Methionine, L Carnitine is a conditionally essential nutrient involved in energy metabolism and fat transport. Key Benefits Acetyl L Carnitine Walgreens