Learn more about Theanine uses, effectiveness, possible side effects, interactions, dosage, user ratings and products that contain Theanine.
L-theanine is an amino acid commonly found in tea leaves that’s been shown to improve sleep, reduce anxiety and stress and boost mental clarity and alertness.
L-theanine is an amino acid in green and black tea and some mushrooms. Learn about the possible benefits and side effects, as well as dosage information.
Theanine / ˈθiːəniːn /, also known as L-γ-glutamylethylamide, N5-ethyl-L-glutamine, or γ-glutamylethylamide, is a bioactive, non-proteinogenic amino acid similar to the proteinogenic amino acids glutamic acid and L -glutamine.
L-theanine is an amino acid found naturally in green and black teas. It is also a supplement and has benefits for anxiety, depression, immunity, and sleep.
Key Takeaways L-theanine is commonly used as a supplement to promote relaxation, focus, and stress relief without causing drowsiness. L-theanine is safe to take with minimal to no side effects at doses up to 400 milligrams per day. More studies are needed to further assess safety with long-term use.
Learn about the potential benefits of L-Theanine including contraindications, adverse reactions, toxicology, pharmacology and historical usage.
What Is L-Theanine? L-Theanine (N-ethyl-L-glutamine) is a naturally occurring, non-proteinogenic amino acid predominantly found in Camellia sinensis tea leaves and certain mushroom species.