MedDataX Logo

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

NCT ID: NCT01851122

Last Updated: 2023-12-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

26 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-11-30

Study Completion Date

2012-10-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

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.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Theanine, (L)-Isomer

Keywords

Explore important study keywords that can help with search, categorization, and topic discovery.

l-theanine alertness well-being

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Placebo capsule

Group Type PLACEBO_COMPARATOR

Placebo capsule

Intervention Type DIETARY_SUPPLEMENT

L-theanine capsule

Group Type EXPERIMENTAL

L-theanine capsule

Intervention Type DIETARY_SUPPLEMENT

L-theanine 250mg capsule

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

L-theanine capsule

L-theanine 250mg capsule

Intervention Type DIETARY_SUPPLEMENT

Placebo capsule

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* adult
* able to swallow capsule

Exclusion Criteria

* none
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

The University of Texas Health Science Center, Houston

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

David Bauer

Staff - Internal Medicine - Cardiology

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

Physicians at Sugar Creek

Sugar Land, Texas, United States

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

HSC-GEN-11-0299

Identifier Type: -

Identifier Source: org_study_id