l-theanine

L-Theanine is a relaxing and nondietary amino acid found pretty much exclusively in teas from Camellia sinensis and is known to promote relaxation without sedation.

L-Theanine (Standard) is the analytical standard of L-Theanine, primarily used for research and analytical applications. L-Theanine (L-Glutamic Acid γ-ethyl amide) is a non-protein amino acid found in green tea leaves. It competitively blocks the binding of glutamate to glutamate receptors (such as NMDA, AMPA, and Kainate receptors) in the brain, exerting neuroprotective, anticancer, and antioxidant activities. L-Theanine can effectively cross the blood-brain barrier and exhibits high oral bioavailability.

DL-Theanine (DL-Glutamic acid γ-ethyl amide) is a natural compound known for its calming effects on the brain.