A Clinical Trial to Assess the Efficacy of a Single-dose of AlphaWave® L-Theanine on Cognitive Function in Healthy Adults With Moderate Stress

NCT ID: NCT07004023

Last Updated: 2026-01-12

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 40 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-11-29
• Study Completion Date: 2026-01-31

Brief Summary

The goal of this clinical trial is to to assess the efficacy AlphaWave® L-Theanine on mental acuity/cognitive function and stress relief in healthy adults with moderate stress. The main question it aims to answer is:

Is there a difference in change in mental acuity from pre- to post-dose between AlphaWave® L-Theanine and placebo?

Participants will asked to provided a single dose of one capsule of a single dose of one capsule of AlphaWave® L-Theanine or one placebo capsule with 250 ml of room temperature water, and asked to complete tasks to assess cognitive function.

Conditions

Cognitive Function; Moderate Stress

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

AlphaWave® L-theanine

AlphaWave® L-Theanine, is a dietary supplement containing 200 mg of L-theanine per capsule

Group Type: EXPERIMENTAL

AlphaWave® L-Theanine

Intervention Type: DIETARY_SUPPLEMENT

Study staff will provide participants with a single dose of one capsule of AlphaWave® L-Theanine or one placebo capsule with 250 ml of room temperature water.

Placebo

Group Type: PLACEBO_COMPARATOR

Placebo

Intervention Type: OTHER

Study staff will provide participants with a single dose of one capsule of AlphaWave® L-Theanine or one placebo capsule with 250 ml of room temperature water.

Interventions

AlphaWave® L-Theanine

Study staff will provide participants with a single dose of one capsule of AlphaWave® L-Theanine or one placebo capsule with 250 ml of room temperature water.

Intervention Type: DIETARY_SUPPLEMENT

Placebo

Study staff will provide participants with a single dose of one capsule of AlphaWave® L-Theanine or one placebo capsule with 250 ml of room temperature water.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

1. Males and females 18 to 60 years of age, inclusive

2. Females not of child-bearing potential, defined as those who have undergone a sterilization procedure (e.g. hysterectomy, bilateral oophorectomy, bilateral tubal ligation, complete endometrial ablation) or have been post-menopausal for at least 1 year prior to screening

Or,

Individuals of child-bearing potential must have a negative baseline urine pregnancy test and agree to use a medically approved method of birth control for the duration of the study. All hormonal birth control must have been in use for a minimum of three months. Acceptable methods of birth control include:

• Hormonal contraceptives including oral contraceptives, hormone birth control patch (Ortho Evra), vaginal contraceptive ring (NuvaRing), injectable contraceptives (Depo-Provera, Lunelle), or hormone implant (Norplant System)
• Double-barrier method
• Intrauterine devices
• Non-heterosexual lifestyle and agrees to use contraception if planning on changing to heterosexual partner(s)
• Vasectomy of partner at least 6 months prior to screening
• Abstinence and agrees to use contraception if planning on becoming sexually active during the study

3. Individuals with moderate stress as determined by a score of 14 to 26 on the Perceived Stress Scale

4. Have a regular sleep-wake cycle with a bedtime between 9:00 pm and 12:00 am and receive between 7 and 9 hours of sleep for at least 3 weeks prior to baseline

5. Agrees to avoid caffeine (e.g., tea, coffee, energy drinks) for 12 h prior to post-screening clinic study visits

6. Agrees to avoid alcohol consumption and vigorous physical activity for 24 h prior to post-screening clinic study visits

7. Agrees to avoid first generation anti-allergy medication for 48 h prior to post-screening clinic study visits

8. Willingness to complete assessments and diaries associated with the study and to complete all visits

9. Agrees to maintain current lifestyle habits (diet, physical activity, medications, supplements, and sleep) as much as possible throughout the study

10. Provided voluntary, written, informed consent to participate in the study

11. Healthy as determined by medical history as assessed by the Qualified Investigator (QI)

Exclusion Criteria

1. Individuals who are pregnant, breast feeding, or planning to become pregnant during the study

2. Allergy, sensitivity, intolerance, or dietary restriction preventing consumption of investigational product or placebo ingredients

3. Self-reported confirmation of any significant neuropsychological condition and/or cognitive impairment (e.g., Schizophrenia, bipolar disorder, post-traumatic stress disorder, brain injury, stroke, neurodegenerative disease, infections, insomnia, depression, epileptic or other seizure-related disorders) that could interfere with study participation as assessed by the QI

4. Self-reported color blindness/weakness as assessed by the QI

5. Current employment that calls for rotating shift work or shift work that will disrupt normal circadian rhythm in the last three weeks as assessed by the QI

6. Unstable metabolic disease or chronic diseases as assessed by the QI

7. Current or history of any significant diseases of the gastrointestinal tract as assessed by the QI

8. Unstable hypertension. Treatment on a stable dose of medication for at least 3 months will be considered by the QI

9. Type I or Type II diabetes

10. Significant cardiovascular event in the past 6 months. Participants with no significant cardiovascular event on stable medication may be included after assessment by the QI on a case-by-case basis

11. History of or current diagnosis with kidney and/or liver diseases as assessed by the QI on a case-by-case basis, with the exception of history of kidney stones in participants who are symptom free for 6 months

12. Self-reported confirmation of current or pre-existing thyroid condition. Treatment on a stable dose of medication for at least 3 months will be considered by the QI

13. Major surgery in the past 3 months or individuals who have planned surgery during the course of the study. Participants with minor surgery will be considered on a case-by-case basis by the QI

14. Cancer, except skin basal cell carcinoma completely excised with no chemotherapy or radiation with a follow up that is negative. Volunteers with cancer in full remission for more than five years after diagnosis are acceptable

15. Individuals with an autoimmune disease or are immune compromised as assessed by the QI

16. Use of medical cannabinoid products as assessed by the QI

17. Chronic use of cannabinoid products (>2 times/week). Occasional users will be required to washout and abstain for the duration of the study period

18. Regular use of tobacco or nicotine products in the past six months, as assessed by the QI. Occasional users will be required to washout and abstain for the duration of the study period

19. Alcohol intake average of >2 standard drinks per day as assessed by the QI

20. Alcohol or drug abuse within the last 12 months

21. Current use of prescribed and/or over-the-counter (OTC) medications, supplements, and/or consumption of food/drinks that may impact the efficacy and/or safety of the investigational product (Section 7.3)

22. Participation in other clinical research studies 30 days prior to baseline as assessed by the QI

23. Individuals who are cognitively impaired and/or who are unable to give informed consent

24. Any other condition or lifestyle factor, that, in the opinion of the QI, may adversely affect the participant's ability to complete the study or its measures or pose significant risk to the participant

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

KGK Science Inc.

INDUSTRY

Sponsor Role: collaborator

Ethical Naturals, Inc.

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

David Crowley, MD

Role: PRINCIPAL_INVESTIGATOR

KGK Science Inc.

Locations

KGK Science Inc.

London, Ontario, Canada

Site Status: RECRUITING

Countries

Canada

Central Contacts

Marc Moulin, PhD

Role: CONTACT

mmoulin@kgkscience.com

+12267819094;ext=300

Facility Contacts

Marc Moulin, PhD

Role: primary

mmoulin@kgkscience.com

+12267819094;ext=300

David Crowley, MD

Role: backup

dcrowley@kgkscience.com

Other Identifiers

25ENCCA02

Identifier Type: -

Identifier Source: org_study_id