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

NCT01851122 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 26

Last updated 2023-12-13

No results posted yet for this study

Summary

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 rate, alertness, and sense of well-being.

Conditions

  • Theanine, (L)-Isomer

Interventions

DIETARY_SUPPLEMENT

L-theanine capsule

L-theanine 250mg capsule

DIETARY_SUPPLEMENT

Placebo capsule

Sponsors & Collaborators

  • The University of Texas Health Science Center, Houston

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2011-11-30
Primary Completion
2012-10-31
Completion
2012-10-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01851122 on ClinicalTrials.gov