Is L-theanine a Non-Protein Amino Acid? The Definitive Answer
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4 min read
L-theanine is a unique, water-soluble amino acid found predominantly in tea plants, but unlike the 20 standard proteinogenic amino acids, it is not used to synthesize protein. Its distinct biochemical role is tied to promoting relaxation and improving cognitive function, separate from the body's primary protein-building activities.
