L-theanine is a unique amino acid derived from green tea that helps to promote relaxation and to moderate occasional stress, easing occasional nervous tension and irritability without causing grogginess. It has been shown to rapidly and safely enhance alpha wave production in the brain. The alpha state is an intensely pleasurable and relaxed state of consciousness essential to stress reduction. In addition, L-theanine supports healthy rates of vascular blood flow, improves immune function, and moderates the effects of caffeine on the central nervous system. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.