Research suggests that L-theanine might provide a range of health benefits, which may include improved mental focus and better sleep quality. It occurs naturally in green and black tea ...

L-theanine may have benefits for depression, sleep, and stress. It has antioxidant and anti-inflammatory properties, as well as regulatory effects on anxiety and the immune system. L-theanine is a ...

Theanine is an amino acid found in tea and some mushrooms. It comes in two forms: L-theanine and D-theanine. L-theanine is the most common form. Theanine is similar to glutamate, a naturally ...