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Vitamin c may soothe leaky gut in obesity, new study hopes

NCT ID NCT07151105

Symptom relief Sponsor: Ohio State University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Sep 02, 2026 · Updated 2 times

Summary

This study tests whether taking vitamin C daily can improve gut health and reduce inflammation in adults with obesity. Over two 2-week periods, 34 participants will take either vitamin C or a placebo, and researchers will measure gut permeability using sugar drinks and blood, urine, and stool samples. The goal is to see if a simple vitamin can help prevent harmful substances from leaking into the bloodstream, which may lower the risk of heart and liver problems.

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 34 people

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

Started

Oct 2025

Expected to finish

Dec 2028

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 50 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * English speaking * Men and women between 18-50 years of age * BMI 30-40 kg/m² * Resting blood pressure \<140/90 mm Hg * No use of multivitamin/vitamin C supplement within past 1-month * Non-vegetarian/non-vegan * Willingness to follow a diet low in fruits and vegetables for two, 2-week periods Exclusion Criteria: * Current smoker or vaper, including tobacco, cannabis, or nicotine products * Alcohol consumption \>2 drinks/day * Use of antibiotics within past 1-month * Use of probiotic supplements within past 1-month * Use of anti-inflammatory drugs within past 1-month * Individuals with unmanaged or poorly controlled diabetes, dyslipidemia, hypertension * Known history of bleeding disorders, hemochromatosis, or kidney stones * For Women: Pregnancy, lactation, or change in birth control within the past 3-months * Use of certain medications that may interact with vitamin C, including blood thinners, some antiviral drugs (e.g., indinavir), and certain antipsychotic medications (e.g., fluphenazine).

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Conditions

The condition(s) this trial relates to.

obesity disorder

As listed by the trial registrant

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

Adequate vitamin C status Inadequate vitamin C status

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • The Ohio State University

    RECRUITING

    Columbus, Ohio, 43210, United States

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