L-theanine may promote relaxation, focus and attention, and help relieve stress. Food sources of L-theanine include matcha, some mushrooms and green, black and white teas. L-theanine should not be ...

Jillian Kubala, MS, is a registered dietitian based in Westhampton, NY. Jillian uses a unique and personalized approach to help her clients achieve optimal wellness through nutrition and lifestyle ...

Emmanuella Ogbonna is a licensed pharmacist, health writer, and medical researcher. L-theanine is a natural supplement that slows brain waves to improve relaxation and sleep quality. Absorption takes ...