VITamin D and OmegA-3 TriaL (VITAL): Fractures, Vitamin D and Genetic Markers
Public ClinicalTrials.gov record NCT01704859. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Study identification
- NCT ID
- NCT01704859
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Enrollment
- 25,871 participants
Conditions and interventions
Conditions
Interventions
- Fish oil placebo Dietary Supplement
- Vitamin D3 Dietary Supplement
- Vitamin D3 placebo Dietary Supplement
- omega-3 fatty acids (fish oil) Drug
Dietary Supplement · Drug
Eligibility (public fields only)
- Age range
- 50 Years and older
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 31, 2018
- Primary completion
- Mar 30, 2022
- Completion
- Nov 22, 2022
- Last update posted
- Apr 26, 2026
2018 – 2022
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Brigham and Women's Hospital | Boston | Massachusetts | 02115 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01704859, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 26, 2026 · Synced May 19, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01704859 live on ClinicalTrials.gov.