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Antidepressant venlafaxine put to the test against chronic back pain

NCT ID NCT07737158

Symptom relief Sponsor: Beijing Tiantan Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 30, 2026 · Last updated Jul 31, 2026 · Updated 1 time

Summary

This trial tests whether the antidepressant venlafaxine can reduce pain and improve function in adults with chronic non-specific low back pain. Participants receive either venlafaxine (up to 225 mg daily) plus routine care, or routine care alone, for three months. The study measures changes in pain intensity and daily functioning to see if the drug offers meaningful relief.

What this could mean

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

Active substance
the antidepressant drug venlafaxine
What this could lead to
If it works, this could offer a new treatment option for chronic low back pain, potentially reducing reliance on opioids.
What could go wrong
This is a mid-sized trial, and venlafaxine may cause side effects like nausea or dizziness. It is not yet proven effective for pain, and results may not apply to all patients.

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

About 228 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Dec 2028

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 75 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: * Adults aged 18 to 75 years. * Diagnosis of chronic nonspecific low back pain, defined as pain located below the costal margin and above the inferior gluteal folds, lasting for more than 3 months, without a specific pathological cause. * Moderate to severe pain, defined as a Numerical Rating Scale score of 3 or higher. * Able to understand the study procedures and sign written informed consent. Exclusion Criteria: * Low back pain caused by a known specific pathological condition, including but not limited to fracture, malignancy, infection, inflammatory disease, or other identifiable structural or systemic causes. * Major comorbidities that may interfere with study outcomes or represent contraindications to the study medication. * Current or previous diagnosis of depression, regardless of whether treatment was received. * Current or previous use of antidepressant medication. * Current use of opioid analgesics. * Pregnancy, breastfeeding, or planned pregnancy during the study period. * Known allergy, hypersensitivity, or contraindication to toludesvenlafaxine. * History of psychosis or other major psychiatric disorders. * Any condition that, in the investigator's judgment, makes the participant unsuitable for the study.

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Conditions

The condition(s) this trial relates to.

agnosia

As listed by the trial registrant

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

Non-specific low back pain Pain management

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

  • Beijing Tiantan Hospital

    Beijing, China, 100050, China

More trials for these conditions

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