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L-theanine is an amino acid found in green tea. Studies show that L-Theanine
produces tranquilizing effects in the brain without drowsiness. It calms by
helping to increase alpha-brain wave activity, the electrical brain activity
commonly present when you are very relaxed. By diminishing feelings of stress,
worry and anxiety, L-Theanine may help improve mental focus, learning and
concentration. Single dosages of 200 mg of L-Theanine have been shown effective
in studies. It is estimated that a person who drinks 6 to 8 cups of green tea a
day may consume between 200 to 400 mg of L-Theanine. Natural Factors new L-Theanine
provides this amino acid as a supplement, so you don't have to drink pots of
green tea each day.