L-TeaActive® L-theanine is an adaptogen that supports relaxation, focus, and aids in a healthy stress response by reducing cortisol levels, the stress hormone, in the body. Adaptogens help the body adjust when under stress and bring back physiological balance. L-theanine is an ideal ingredient for anti-stress and increased focus, delivered in functional beverages, dietary supplements, and other related products. Blue California has compiled all the latest research on L-Theanine in this new brochure and the body of research is impressive.