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Could a nerve pain drug and exercise ease long COVID fatigue?

NCT ID NCT05967052

Symptom relief Sponsor: National Institute of Geriatrics, Rheumatology and Rehabilitation, Poland 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
The trial has finished. Results may not be published yet.
Stopped early This study
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This status has not been confirmed recently, so it may be out of date.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 the drug pregabalin, alone or with a rehabilitation program, can reduce chronic fatigue in people with post-COVID syndrome. Participants are adults aged 18 to 65 who had COVID-19 at least six months ago and still feel very tired. The trial compares four groups: pregabalin only, rehabilitation with a placebo, rehabilitation with pregabalin, or placebo only, over six months.

What this could mean

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

Active substance
Pregabalin
What this could lead to
If it works, this could point toward a treatment for chronic fatigue after COVID-19, combining medication and rehabilitation.
What could go wrong
This is a small early-phase trial, so results may not apply to everyone. Pregabalin can cause side effects like dizziness and drowsiness.

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

23 people

The number who actually took part.

Started

Oct 2023

Finished

Sep 2025

Lead sponsor

A research network

The lead sponsor is a research network or cooperative group.

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: 1. The patient correctly gave written informed consent to participate in the study; 2. Men or women between the ages of 18 and 65 inclusive at the time of signing the informed consent; 3. Patient after a minimum of 6 months from the documented detection of SARS-CoV-2 infection (document confirming the history of the disease, including a positive result of the PCR or antigen test, certificate of convalescence; medical documentation confirming the infection; the condition is also considered fulfilled in the case of documented infection asymptomatic); 4. During the screening, the patient meets the criteria for the diagnosis of chronic fatigue syndrome (CFS) according to the National Academy of Medicine (2015); 5. Women: a) incapable of having children (post-menopausal or child-bearing, subjected to permanent sterilization); (b) of childbearing potential with a negative pregnancy test result at screening and using a highly effective method of contraception throughout the IMP use and for 7 days after the last IMP use. 6. The patient agrees to participate in all activities provided for in the study. 7. The patient is able to understand the information presented and give informed consent to participate in the study prior to screening. Exclusion Criteria: 1. Vital functions disorders; 2. Documented hypersensitivity to pregabalin or any of the excipients of the formulation (i.e., lactose); 3. Moderate or severe depression during treatment or present during psychiatric evaluation at baseline; 4. Concurrent treatment with opioids or other antiepileptic drugs (including tramadol, buprenorphine, morphine, oxycodone, gabapentin, duloxetine); 5. Pregnant or breastfeeding women.

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Conditions

The condition(s) this trial relates to.

long COVID-19 myalgic encephalomeyelitis/chronic fatigue syndrome

As listed by the trial registrant

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

Chronic fatigue syndrome COVID-19, long haul

Contacts and locations

Locations

  • Centrum Wsparcia Badań Klinicznych

    Warsaw, Masovian Voivodeship, 02-637, Poland

More trials for these conditions

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