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Grape powder may ease anxiety and boost gut health in students

NCT ID NCT07214428

Symptom relief Sponsor: Rutgers, The State University of New Jersey Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Aug 12, 2026 · Updated 3 times

Summary

This study tests whether a daily drink of freeze-dried grape powder can reduce anxiety, depression, and stress in healthy college students aged 18-30. Over 4 weeks, 50 participants will take either the grape powder or a placebo and complete surveys and stool tests. The goal is to see if the grape powder improves mood by changing gut bacteria.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
freeze-dried table grape powder
What this could lead to
If it works, this could point toward a simple dietary supplement to help ease stress and anxiety in young adults.
What could go wrong
This is a small, early-stage trial with only 50 participants. The effect may be small or no different from placebo, and results may not apply to other groups.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2025

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 30 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Aged 18-30 years old * Able to give written informed consent. * BMI 18.5-24.9 kg/m2 * Healthy (self-reported) * Can read and speak English Exclusion Criteria: * Currently taking medications that interfere with polyphenol * Currently using or have used antibiotics continuously for \>3 days within 3 months prior to enrollment * Have had surgery involving the intestinal lumen within the last 30 days * Have a documented diagnosis of celiac disease or/and inflammatory bowel diseases * Are pregnant or breastfeeding * Have prediabetes and diabetes * Have had bariatric surgery * Are immunocompromised ( e.g., cancer treatment, bone marrow/organ transplant, immune deficiency, or poorly controlled HIV/AIDS) * Are unable to provide consent * Are hospitalized, * Have a history of or current alcohol, drug, or medication abuse (self-reported), * Have contraindication to any substance in the investigational product or who are currently enrolled in other interventional trials

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Gut microbiota Psychological distress

Contacts and locations

Locations

  • Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey

    New Brunswick, New Jersey, 08901, United States

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