Could a tiny dose of naltrexone ease ME/CFS fatigue?
NCT ID NCT07285473
First seen Jun 27, 2026 · Last updated Aug 21, 2026 · Updated 1 time
Summary
This study tests whether a low dose of naltrexone can reduce fatigue in people with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). Researchers will enroll 75 adults from Alabama and track their fatigue levels weekly through online surveys. The goal is to find the best dose for symptom relief.
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
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 75 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Oct 2026
An estimate. Start dates often move.
- Expected to finish
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Apr 2028
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Between ages of 18 and 65 * Living in Alabama * Meets ME-ICC criteria Exclusion Criteria: * Abnormal hepatic function * Abnormal renal function * Abnormal complete blood count * Evidence of active or chronic systemic infection * A1C \> 9.0% * Current opioid analgesic use * Pregnant or plans to become pregnant during the study participation period * Auto-immune disorder * Enrolled in other experimental treatment study
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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University of Alabama at Birmingham
Birmingham, Alabama, 35243, United States
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