Could milk thistle or citrus compounds soothe fibromyalgia pain?
NCT ID NCT07293767
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether two natural supplements—silymarin (from milk thistle) and a hesperidin/diosmin combination (from citrus)—can reduce pain and improve quality of life in people with fibromyalgia. About 90 adults with fibromyalgia will take one of the supplements or a placebo for four months. Researchers will measure pain levels, inflammation markers, and overall well-being to see if these supplements offer relief.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 90 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2024
- Expected to finish
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Dec 2026
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 60 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Informed written consent. * Participant must meet the American College of Rheumatology 2016 revised classification criteria for Fibromyalgia: Widespread pain index (WPI) ≥ 7 and symptom severity (SS) scale score ≥ 5, or WPI 3 to 6 and SS scale score ≥ 9 * Age \>18 years old (males and females) * Diagnosis of FM confirmed by a rheumatologist. * Persistent pain syndrome on conventional therapy. * Not taking Daflon or Legalon for 6 months. Exclusion Criteria: * Pain due to other conditions (e.g. diabetic peripheral neuropathic pain or post-herpetic neuralgia) that would confound assessment or self-evaluation of the pain associated with FM. * Patients with pain due to any widespread inflammatory musculoskeletal disorder (e.g. rheumatoid arthritis, lupus) or widespread rheumatic disease other than FM. * Allergy to silymarin or diosmin or hesperidin. * Cognitive deficits that could impair understanding of the study, completion of questionnaires, or adherence to therapy. * Pregnant or planning pregnancy women and breastfeeding women. * Major comorbidities like renal impairment, severe liver disease, chronic hepatitis C, history of alcohol or drug addiction. * Current severe or uncontrolled major depressive disorder or anxiety disorders. * Patients will be excluded if there is no compliance to the medication.
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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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Outpatients clinic of department of Internal medicine- Rheumatology unit Ain shams hospitals.
RECRUITINGCairo, Egypt
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Brain zaps might quiet fibromyalgia pain without drugs