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Study identifier: NCT06385275 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

The Role of Vitamin K on Knee Osteoarthritis Outcomes

Condition: Osteo Arthritis Knee  ·  Sponsor: Boston University

PhasePhase 1/Phase 2
Planned participants55
Who can joinAll sexes, 50 Years to no upper limit
Healthy volunteersNo

About this study

The appropriate form and dosing of vitamin K to benefit relevant outcomes in knee osteoarthritis (OA) are not known. In intervention studies for conditions other than knee OA (e.g., prevention of cardiovascular disease), the most commonly used forms and doses include phylloquinone (vitamin K1; 1000µg or 500µg daily) or menaquinone-7 (MK-7 or vitamin K2; 300µg daily). However, whether these doses are adequate to increase vitamin K to levels that ameliorate risk of adverse OA outcomes is not known. Furthermore, although some studies suggest enhanced bioavailability of MK-7 over vitamin K1, as well as extra-hepatic effects, whether this is relevant for an older population with knee OA is not known, The overall goal of this pilot randomized clinical trial (RCT) is to test different subtypes and doses of vitamin K supplementation in older adults with knee OA and to measure changes in relevant biochemical measures.

This description comes directly from the study's public registry record.

Talk to the study team

Jean Liew, MD MS  ·  617 358 9655  ·  jwliew@bu.edu

Always discuss trial participation with your own doctor first.

Locations (1)

Boston Medical Center, Rheumatology ClinicBoston, Massachusetts, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06385275