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Could blackberry root tea help tame Graves' disease?

NCT ID NCT07164079

Disease control Sponsor: Betul Uner 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Updated 1 time

Summary

This study looked at whether a tea made from wild blackberry root could improve thyroid health in people with Graves' disease, an autoimmune condition that causes an overactive thyroid. Forty-two adults with newly diagnosed or relapsed Graves' disease drank either the blackberry root tea or a placebo tea every day for 8 weeks. Researchers measured thyroid hormones, autoimmune markers, and thyroid structure to see if the extract had any effect.

What this could mean

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

Active substance
wild blackberry root extract
What this could lead to
If it works, this could point toward a natural supplement to help manage Graves' disease alongside standard treatment.
What could go wrong
This is a small, early-stage study with only 42 people. The results may not apply to everyone, and the extract might not have a meaningful effect on the disease.

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

42 people

The number who actually took part.

Started

Dec 2024

Finished

Jun 2026

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

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: * Patients with a new diagnosis of Graves' disease or those with a relapse of Graves' disease * Patients aged 18-65 * A score of 80 or higher on the Health Eating Index (HEI) Exclusion Criteria: * Having received treatment for the disease within the last 6 months * Having another chronic and/or autoimmune disease * Being pregnant or lactating

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Conditions

The condition(s) this trial relates to.

Graves disease

As listed by the trial registrant

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

Graves disease (basedow'S disease)

Contacts and locations

Locations

  • Muğla Sıtkı Koçman University/Muğla Training and Research Hospital Endocrine and Metabolic Diseases Polyclinic

    Muğla, Mentese, 48000, Turkey (Türkiye)