The Effect of the Amino Acid L-Theanine on Alertness and Vigilance

The amino acid l-theanine (the active ingredient in green tea) is considered to have a calming effect without causing sleepiness. This study evaluates whether l-theanine affects blood pressure, heart ...

Lead sponsor: The University of Texas Health Science Center, Houston•1 U.S. locations•View source on ClinicalTrials.gov

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Trial snapshot

StatusCOMPLETED

PhaseNA

Enrollment26

Start dateNov 2011

Last updatedDec 13, 2023

Condition

Theanine, (L)-Isomer

Locations shown

Physicians at Sugar Creek

Sugar Land, Texas

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Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: December 13, 2023Data synced to Clareo: May 3, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.

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