Support Stress Levels, Cognitive Function and More with Our L-Theanine Liquid Drops. With L-Theanine in Easy-To-Take Liquid Form. Simply Take it By Moth, Add to a Glass of Water, Your Favorite Morning Juice, Or a Smoothie! 200 mg L-Theanine Per Serving. Non GMO Vegan. How it Works. - L-Theanine is an amino acid found primarily in green and black tea and some mushrooms. - It promotes relaxation and may ease occasional anxiety and stress while supporting memory and thinking skills (cognitive function). - L-Theanine may also support a good night's sleep. - Support overall health with this e...