NCT05450952

Brief Summary

The purpose of this study is to assess the effectiveness and safety of the theanine formulation on stress, burnout, mood, and sleep in male and female subjects who are generally healthy

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
14

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Apr 2022

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
terminated

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 21, 2022

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

July 5, 2022

Completed
6 days until next milestone

First Posted

Study publicly available on registry

July 11, 2022

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 7, 2022

Completed
15 days until next milestone

Study Completion

Last participant's last visit for all outcomes

December 22, 2022

Completed
Last Updated

April 18, 2024

Status Verified

April 1, 2024

Enrollment Period

8 months

First QC Date

July 5, 2022

Last Update Submit

April 16, 2024

Conditions

Keywords

BurnoutMoodSleepFatigue

Outcome Measures

Primary Outcomes (3)

  • Depression, Anxiety and Stress Scale-21 (DASS-21)

    Assessment of the mean change in the results of Depression, Anxiety and Stress Scale-21 (DASS-21) from baseline. There are 21 items consisting of three scales (Depression, Anxiety and Stress) contains 7 items and scores from each scale can range from 0-56. The lower the scores for each scale indicates a better outcome.

    28 days

  • State-Trait Anxiety Inventory (STAI)

    Assessment of the mean change in the results of the State-Trait Anxiety Inventory (STAI) from baseline. This is a 20-item questionnaire which includes separate measures of state and trait anxiety. The total scores range from 0-63. The lower the score indicates a better outcome.

    28 days

  • Perceived Stress Scale (PSS-14)

    Assessment of the mean change in the results of the Perceived Stress Scale (PSS-14) from baseline. There are 14 items and total scores range from 0-56. The lower the score indicates a lower level of stress.

    28 days

Secondary Outcomes (5)

  • Leeds Sleep Evaluation Questionnaire (LSEQ)

    28 days

  • Maslach Burnout Inventory (MBI-GS)

    28 days

  • Visual Analog Mood Scales (VAMS)

    28 days

  • Short Form -36 Health Survey (SF-36)

    28 days

  • Cortisol Levels

    28 days

Study Arms (2)

Active

ACTIVE COMPARATOR

Dietary Supplement (Theanine Formulation)

Dietary Supplement: Theanine Formulation

Placebo

PLACEBO COMPARATOR

Placebo Tablet

Dietary Supplement: Placebo

Interventions

Theanine FormulationDIETARY_SUPPLEMENT

Theanine Formulation Tablet

Active
PlaceboDIETARY_SUPPLEMENT

Placebo Tablet

Placebo

Eligibility Criteria

Age21 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Ambulatory, male or female, 21-65 years of age
  • A BMI of 18.5-34.9
  • Admits to having occasional periods of moderate or severe stress
  • Indicating a DASS score \> 19 (identification as having moderate, severe, or extremely severe stress)
  • Indicating a PSS-14 score \> 19 (identification as having moderate or high perceived stress)
  • Have personal access to and able to operate a smartphone, tablet, or computer with enough memory to accommodate additional application(s) and have a reliable internet service
  • Able to print out and return documents by email (preferred)or mail
  • If have a history of testing positive for coronavirus SARS-CoV2 (COVID-19, being asymptomatic for a minimum of 14 days and have a negative COVID-19 antigen test
  • Able to take saliva specimens with a swab and store them immediately in a freezer before breakfast, lunch, dinner, and bedtime on four different days during the study
  • Generally healthy and having no difficulty swallowing a tablet
  • Have sufficient freezer space to hold a minimum of 2 saliva test kits (approximately the size of 2 ice cream cartons)
  • Has regular daytime work hours or shifts, if employed (regular shift excludes night shift workers and those with rotating shifts)
  • Has been generally weight stable for the past six months (+/- 6 lbs.)
  • Willing and able to give written informed consent
  • Clearly understands the procedures and study requirements
  • +3 more criteria

You may not qualify if:

  • Not having the basic skills needed to operate a smartphone, tablet, or computer
  • Unwilling to limit daily caffeine intake to less than 400 mg caffeine per day (\~ 95 mg caffeine in a cup of regular coffee) and refrain from consuming any caffeinated beverages/foods after 2 PM daily for the duration of the study
  • Having smoked any cigarette, electronic cigarette, cigar, pipe, or used a recreational drug as well as any product containing cannabidiol (CBD) or tetrahydrocannabinol (THC) in the past 30 days prior to Screening/baseline
  • Having donated blood within 30 days before Screening/baseline
  • Having been diagnosed with dysphagia or difficulty swallowing
  • Having participated in another study within 30 days prior to Screening/baseline
  • Being pregnant or planning on becoming pregnant during study participation; or breast feeding
  • History of allergy or sensitivity to any component of the study products including L-theanine, microcrystalline cellulose, hydroxypropyl methylcellulose, stearic acid, silica, silicon dioxide, vegetable stearate, croscarmellose sodium or glycerin
  • Are not participating in a stress management program and will not for the duration of the study participation.
  • Unable to avoid any form of intense exercise or a significant change in your exercise routine during the day of saliva specimen collection
  • Currently taking supplements including melatonin, 5-hydroxytryptophan, Calamus, California poppy, St. John's wort, S-adenosylmethionine (SAM-E), catnip, hops, kava, valerian, Jamaican dogwood, skullcap, yerba mansa, Hawaiian baby woodrose, L-theanine, magnesium, or any other supplement for stress, burnout, mood, or sleep. These may preclude participation in the study dependent the judgment of the Study Investigator/Sub-Investigator
  • Having been diagnosed, received medical treatment, taking medication/supplements daily for the following medical condition(s):
  • Stress disorder (including post-traumatic stress disorder \[PTSD\])
  • Sleep disorder (including insomnia diagnosed by a physician)
  • Psychiatric disorder (bipolar disorder, manic disorder, schizophrenia, apathetic \[inherited\] disorder), that include antidepressant drugs, including selective serotonin reuptake inhibitors (SSRIs), tricyclic and atypical antidepressants; benzodiazepines; phenothiazines, central nervous system (CNS) depressants as well as the following medications: dextromethorphan, meperidine, monoamine oxidase inhibitors (MAOIs), pentazocine and tramadol. These may preclude participation in the study dependent on the judgment of the Study Investigator/Sub-Investigator.
  • +23 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Life Extension Clinical Research, Inc.

Fort Lauderdale, Florida, 33304, United States

Location

Related Publications (30)

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    BACKGROUND
  • Kakuda T, Hinoi E, Abe A, Nozawa A, Ogura M, Yoneda Y. Theanine, an ingredient of green tea, inhibits [3H]glutamine transport in neurons and astroglia in rat brain. J Neurosci Res. 2008 Jun;86(8):1846-56. doi: 10.1002/jnr.21637.

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    PMID: 30707852BACKGROUND
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  • Lopes Sakamoto F, Metzker Pereira Ribeiro R, Amador Bueno A, Oliveira Santos H. Psychotropic effects of L-theanine and its clinical properties: From the management of anxiety and stress to a potential use in schizophrenia. Pharmacol Res. 2019 Sep;147:104395. doi: 10.1016/j.phrs.2019.104395. Epub 2019 Aug 11.

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    PMID: 21617527BACKGROUND
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    BACKGROUND
  • Williams JL, Everett JM, D'Cunha NM, Sergi D, Georgousopoulou EN, Keegan RJ, McKune AJ, Mellor DD, Anstice N, Naumovski N. The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review. Plant Foods Hum Nutr. 2020 Mar;75(1):12-23. doi: 10.1007/s11130-019-00771-5.

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    BACKGROUND

MeSH Terms

Conditions

Burnout, PsychologicalFatigue

Condition Hierarchy (Ancestors)

Stress, PsychologicalBehavioral SymptomsBehaviorSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 5, 2022

First Posted

July 11, 2022

Study Start

April 21, 2022

Primary Completion

December 7, 2022

Study Completion

December 22, 2022

Last Updated

April 18, 2024

Record last verified: 2024-04

Data Sharing

IPD Sharing
Will not share

Locations