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Probiotics show promise for hay fever relief

NCT ID NCT07532837

Symptom relief Sponsor: Glac Biotech Co., Ltd 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether taking oral probiotics can reduce symptoms of allergic rhinitis (hay fever) and improve quality of life. Researchers will give probiotics to 225 people aged 6 to 65 with diagnosed allergic rhinitis and measure changes in nasal symptoms, inflammation markers, and gut bacteria. The goal is to see if probiotics can help balance the immune system and ease allergy discomfort.

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

225 people

The number who actually took part.

Started

Feb 2024

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

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

Ages

6 to 65 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.

1. Inclusion criteria: 1. Age between 6 and 65 years. 2. Diagnosed with allergic rhinitis by a qualified physician. 3. Score ≥ 7 on the Score for Allergic Rhinitis (SFAR). 4. Willing to participate and has signed the informed consent form. 2. Exclusion criteria: 1. History of drug allergy or use of medications with high sensitivity or contraindications (e.g., allergy to antibiotics or antipyretics). 2. Patients with rhinitis symptoms caused by structural abnormalities such as a deviated nasal septum. 3. Patients receiving oral corticosteroid therapy. 4. Consumption of probiotic-related products within the past 1 month (including drops, tablets, capsules, powders, yogurt, or fermented milk containing live bacteria). 5. Participation in other clinical studies within the past 1 month. 6. Receipt of immunotherapy within the past 1 year. 7. Presence of major illnesses (e.g., possession of a catastrophic illness certificate) or severe immune, hematological, or congenital disorders. 8. Deemed unsuitable for participation by a physician.

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Conditions

The condition(s) this trial relates to.

allergic rhinitis Rhinitis, Allergic

As listed by the trial registrant

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

Allergic rhinitis

Contacts and locations

Locations

  • China Medical University Hospital

    Taichung, 404, Taiwan

More trials for these conditions

Other studies related to the condition(s) this trial covers.