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Kristy Lu, Marcus A Gray, Chris Oliver, David T Liley, Ben J Harrison, Cali F Bartholomeusz, K Luan Phan, Pradeep J Nathan
L-Theanine (delta-glutamylethylamide) is one of the predominant amino acids ordinarily found in green tea, and historically has been used as a relaxing agent. The current study examined the acute effects of L-theanine in comparison with a standard benzodiazepine anxiolytic, alprazolam and placebo on behavioural measures of anxiety in healthy human subjects using the model of anticipatory anxiety (AA). Sixteen healthy volunteers received alprazolam (1 mg), L-theanine (200 mg) or placebo in a double-blind placebo-controlled repeated measures design...
October 2004: Human Psychopharmacology
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