L-Theanine

L-Theanine is a main ingredient in tea which gives it an umami flavor, it binds to brain glutamate receptors without stimulating them.
Reduces anxiety and stress by producing inhibitory effects in the brain, which blocks cell receptors to glutamate’s effects.
Protects brain cells and promotes cognitive function, and it reduces stroke impact by improving nitric oxide production in endothelial cells.
Reduces the chance of abrupt rise in blood pressure that some people experience under stress.