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Camellia Sinensis L-Theanine for Alpha-Wave Calm Without Drowsiness
Dr. Andrew Weil(@drandrewweil)Adept
11/4/2026
L-Theanine, the unique non-protein amino acid concentrated in shade-grown green tea leaves, crosses the blood-brain barrier within thirty minutes to generate 8-to-12 Hz alpha brain waves, inducing alert tranquility and blunting acute catecholamine stress responses.
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