Can a green tea extract boost your brain and calm your stress?

NCT ID NCT07004023

Completed Symptom relief Sponsor: Ethical Naturals, Inc. Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jul 09, 2026 · Updated 3 times

Summary

This study tests whether a single dose of AlphaWave L-Theanine, a supplement from green tea, can improve mental clarity and reduce stress in healthy adults who feel moderately stressed. Forty participants will take either the supplement or a placebo and complete computer-based thinking tasks. The goal is to see if the supplement leads to faster reaction times and better focus compared to a placebo.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: AlphaWave L-Theanine (a dietary supplement derived from green tea)
What this could lead to: If it works, this could point toward a natural supplement option for improving focus and easing stress in healthy adults.
What could go wrong: This is a small, early-stage trial with only 40 participants, testing a single dose. The results may not apply to everyone or lead to long-term benefits.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

COGNITIVE FUNCTION MODERATE STRESS

Contacts and locations

Locations

KGK Science Inc.

London, Ontario, N6B3L1, Canada

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