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Suntheanine® is the premier, patented form of the amino acid L-theanine. Suntheanine® is the purest for of L-theanine on the market today. L-theanine is an amino acid derived from green tea that is responsible for the relaxation-inducing effect of tea consumption. Suntheanine® has been shown to promote an alert state of relaxation. This is characterized by an increase in alpha brain waves (signifying a relaxed, alert state) and a decrease in beta brain waves (signifying an awake, excited state of mind). Suntheanine® may also improve sleep quality, enhance mental acuity and soothe away tension and nervousness.