Vitamin k supplements tested for knee arthritis relief
NCT ID NCT06385275
First seen Jun 27, 2026 · Last updated Sep 21, 2026 · Updated 5 times
Summary
This study tests different types and doses of vitamin K in 55 adults aged 60 and older with knee osteoarthritis. Researchers want to see if vitamin K can improve knee health by measuring changes in blood markers. The goal is to find the best form and dose for future larger studies.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1/2
Runs two stages together: safety and dose first, then whether the treatment works.
- Participants
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49 people
The number who actually took part.
- Started
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Jun 2025
- 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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50 years and older
- 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: * Men ≥50 years old * Women ≥60 years old * Clinical diagnosis of knee OA by the treating rheumatologist * English fluency Exclusion Criteria: * Anticoagulation use (including warfarin, dabigatran, rivaroxaban, apixaban)
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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.
Contacts and locations
Locations
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Boston Medical Center, Rheumatology Clinic
Boston, Massachusetts, 02118, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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