L-theanine is a popular supplement that can promote sleep and relaxation. Experts reveal the benefits and risks of taking it ...

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 ...

L-theanine is an amino acid that occurs naturally in tea leaves and is used in Asian medicine to treat many medical and mental health problems. In a previous blog post, I briefly reviewed the evidence ...

How L-Theanine Works in the Body L-theanine works by directly interacting with neurotransmitters that regulate brain activity by crossing the blood-brain barrier. This amino acid regulates several key ...