Helps Reduce Anxiety. L-Theanine is a unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Animal studies have shown that L-theanine crosses the blood brain barrier increases dopamine and GABA levels in the brain and inhibits the stimulatory properties of caffeine. Human studies have shown that taking L-theanine results in the emission of brain waves associated with a state of relaxation.
"I use this each morning and feel calmer and yet more energetic since I started taking it, over a year ago. Recommended to me by bro-in-law who is a doctor. My doctor is fine with my taking it. Will continue to use it and have recommended it to others as well."