L-methionine is an essential amino acid and is a main component in structural proteins, and serves as a methyl donor in biochemical reactions. Methionine is an intermediate in the biosynthesis of cysteine, carnitine, taurine, lecithin, phosphatidylcholine, and other phospholipids, as well as the enzymatic cosubstrate, S-adenosyl methionine (SAM). Because L-methionine is an essential amino acid, it is not synthesized in the human body and must be supplied by dietary intake or supplementation.
L-methionine supplements are necessary for protein synthesis and provide support for healthy metabolic, central nervous and immune system function.
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