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Probiotics may shield Travelers' gut health

NCT ID NCT07384260

Disease control Sponsor: Min-Tze LIONG 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study tests if taking probiotics can help healthy Chinese adults keep their gut bacteria balanced during a short trip to Europe. Forty participants will take either a probiotic or a placebo for 7 days. Researchers will check stool samples and ask about breathing symptoms to see if the probiotics help.

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 40 people

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

Expected to start

Feb 2026

An estimate. Start dates often move.

Expected to finish

Jan 2027

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: 1. Aged 18-65 years, regardless of gender; 2. Planning to undertake a short-term round-trip journey to Europe (within 7 days); 3. Able to understand and willing to comply with the study protocol, and to cooperate with study procedures; 4. Voluntarily sign the informed consent form before any study-related procedures are initiated. Exclusion criteria: 1. Diseases that may affect the evaluation of trial results, such as immune dysfunction, severe renal/hepatic dysfunction, severe cardiovascular disease, malignant tumors, acute or chronic infections, etc.; 2. Use of probiotic preparations, antibiotics, hormones, immunosuppressants, biological agents, or JAK inhibitors within 4 weeks; 3. Subjects with diagnosed or uncontrolled parasitic infections; 4. Patients receiving long-term medication for chronic diseases; 5. Patients with severe organic lesions in the thyroid, heart, brain, lungs, kidneys, or musculoskeletal system; 6. Patients with a history of or currently diagnosed mental illness; 7. Patients on long-term corticosteroid therapy; 8. Use of growth hormone, γ-aminobutyric acid (GABA), lysine, inositol, or vitamin B12; 9. Presence of uncontrolled, clinically significant laboratory abnormalities that may affect data interpretation or subject participation; 10. Participation in other clinical intervention studies involving drugs, dietary supplements, probiotics, or prebiotics within the past 4 weeks; 11. Presence of severe infections or major trauma deemed by the investigator to potentially affect outcomes, or having undergone moderate to major surgery within the past month; 12. Known allergy to any component of the probiotic product; 13. Subjects deemed unsuitable for participation by the investigator for any other reason.

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As listed by the trial registrant

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

Healthy adult

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

    Haidian, Beijing Municipality, 100080, China

  • Universiti Sains Malaysia

    Pulau Pinang, Pulau Pinang, 11800, Malaysia

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