It has been estimated that nearly 65 percent of the adult population experiences some form of stress, and these numbers are continually rising. Clinical research suggests that Suntheanine L-Theanine naturally stimulates activity in the brain known as alpha waves, which are associated with a relaxed but alert mental state. Additional human clinical research suggests that Suntheanine may have application in supporting a good quality of sleep, learning performance, mental acuity, concentration, and the immune system.†  Helps reduce negative side effects of caffeine.†