Theanine is a unique nutrient found in the leaves of green tea (Camellia sinensis).

Through the natural production of polyphenols, the tea plant converts theanine into catechins. This means that tea leaves harvested during one part of the growing season maybe high in catechins (and antioxidant benefits), while leaves harvested during another time of year may be higher in theanine.

Theanine acts as a non-sedating relaxant to help increase the brain's production of alpha-waves which are associated with "relaxed alertness". By increasing the brain's output of alpha waves, theanine is thought to control anxiety, increase mental focus, improve concentration, and promote creativity. Three to four cups of green tea are expected tocontain 100-200 mg of theanine.

References

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