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Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study
10.1038/ncomms1559 4 BannwarthB.NetterP.LapicqueF.GilletP.PrP.BoccardE.et al (1992)
Regulatory watch Last reviewed Jul 12, 2026 Next review Jul 24, 2026 Evidence snapshot Human trial record: a Phase 1 safety and pharmacokinetics registry entry has no posted efficacy result
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