The name "theanine" without a prefix generally implies the enantiomer L-theanine, which is the form found in tea leaves and as a dietary supplement ingredient. It is an amino acid analogue of the proteinogenic amino acids L-glutamate and L-glutamine and is found primarily in particular plant and fungal species.

Main constituent: L-Theanine

Appearance: Fine brown yellow powder

Application： used as pharmaceutical raw material or for food supplement.

Package： 25kg/drum.

Storage ：Store in a well-closed container away from moisture.

Shelf life：2 years if sealed and stored away from direct sun light.