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Gut bugs on board: probiotic drops may beat Traveler's tummy troubles

NCT ID NCT07163819

Disease control Sponsor: Universiti Sains Malaysia 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study tests whether taking probiotic drops before and during a short overseas trip (less than 7 days) can prevent stomach issues, sleep problems, and other travel-related health problems. 46 healthy adults will take either a mix of three Bifidobacterium strains or a placebo daily. Researchers will check gut bacteria, symptoms, and even antibiotic resistance genes to see if probiotics help keep travelers healthy.

What this could mean

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

Active substance
Probiotic drops containing Bifidobacterium longum subsp. infantis M-63, B. breve M-16V, and B. longum BB536
What this could lead to
If it works, this could point toward a simple probiotic supplement to reduce traveler's diarrhea and other gut issues during short trips.
What could go wrong
This is a small Phase 2 trial with only 46 participants, so results may not apply to everyone. Probiotics may not work for all types of travel or gut 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

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 46 people

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

Started

Jul 2025

Expected to finish

Dec 2025

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 65 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: * Generally healthy adults * Scheduled to undertake a short-term round trip (less than 7 days) to abroad * Able to complete study procedures * Willing to take intervention products Exclusion Criteria: * Use of antibiotics, probiotics, hormones, immunosuppressants, biologics or JAK inhibitors within four weeks prior to study * Chronic or severe systemic diseases (including cardiovascular, hepatic, renal, malignant or psychiatric disorders) * Uncontrolled parasitic infections * Long-term use of corticosteroids, growth hormone, vitamin B12, lysine or inositol * Major surgery within one month * Allergy to probiotic components * Other conditions deemed inappropriate by investigators

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As listed by the trial registrant

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

Healthy adults

How to take part

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

  1. The places running it

    2 sites in 2 countries. The list below names each one and where it is.

  2. 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 ↗

  3. 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

Locations

  • Tsinghua University Science and Technology

    RECRUITING

    Haidian, Beijing Municipality, 100080, China

  • Universiti Sains Malaysia

    NOT_YET_RECRUITING

    George Town, Pulau Pinang, 11800, Malaysia

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