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Can ozone ease chronic pain? new study aims to find out

NCT ID NCT07325851

Symptom relief Sponsor: Bernardino Clavo, MD, PhD 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study will follow 120 people with chronic pain, nerve damage from chemotherapy, radiation side effects, or slow-healing wounds who are referred for ozone therapy. Researchers will track changes in quality of life, pain, and other symptoms over several months. The goal is to see if adding ozone therapy to standard care helps patients feel better.

What this could mean

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

Active substance
ozone therapy
What this could lead to
If successful, this could show that ozone therapy helps ease symptoms and improve daily life for people with hard-to-treat chronic pain or side effects from cancer treatment.
What could go wrong
This is an early observational study, not a controlled trial. It cannot prove ozone therapy works better than other treatments, and results may not apply to everyone.

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.

Participants

About 120 people

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

Expected to start

Jan 2026

An estimate. Start dates often move.

Expected to finish

Jun 2030

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.

Who is studied

Patients submitted to the Chronic Pain Unit of the Hospital Universitario de Gran Canaria Dr. Negrín, between January 2026 and December 2029, for symptomatic/palliative treatment with ozone therapy because standard treatment does not exist, it has been unsuccessful, or it is associated with high risk or high morbidity.

Ages

18 years and older

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: * 1\. Adults ≥ 18 years old. * 2\. Patients referred to the Chronic Pain Unit of the Dr. Negrín University Hospital for symptomatic/palliative treatment with ozone therapy because conventional treatment does not exist, has failed, has offered insufficient results, or is associated with high risk/morbidity. * 3\. After evaluation of symptoms and patients, it exists a potential benefit of adding ozone treatment to the current treatment. * 4\. Patients have no contraindications for ozone treatment. * 5\. Patients must sign the specific Informed Consent for this study and for the ozone treatment. Exclusion Criteria: * 1\. Age \< 18 years old. * 2\. Psychiatric illness or social situations that would limit compliance with study requirements. Contraindication or disability to attend scheduled treatments. * 3\. Contraindication or disability to attend scheduled treatments. * 4\. Uncontrolled clinical conditions (e.g., severe heart failure, massive hemorrhage, status epilepticus). * 5\. Life expectancy \< 6 months. * 6\. Known allergy to ozone. * 7\. Hemochromatosis (for systemic ozone treatment). * 8\. Pregnancy (for systemic ozone treatment). * 9\. Significant Glucose-6-Phosphate Dehydrogenase deficiency (Favism) (for systemic ozone treatment). * 10\. Patients who do not meet the inclusion criteria.

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Conditions

The condition(s) this trial relates to.

anxiety disorder chemotherapy-induced neuropathy Chronic Pain chronic pain syndrome Depression radiation injury

As listed by the trial registrant

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

Chemotherapy-induced peripheral neuropathy Chronic pain Delayed wound healing Radiation toxicity Refractory symptoms

How to take part

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

  1. The places running it

    1 site. 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

  • Dr. Negrín University Hospital

    Las Palmas de Gran Canaria, Las Palmas, 35019, Spain

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