ClinicalTrials.gov record

Completed Not applicable Interventional Accepts healthy volunteers Results available

VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture (VITAL)

ClinicalTrials.gov ID: NCT01747447

Public ClinicalTrials.gov record NCT01747447. 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.

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ClinicalTrials.gov public records Last synced May 19, 2026, 9:19 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture

Study identification

NCT ID: NCT01747447
Recruitment status: Completed
Study type: Interventional
Phase: Not applicable
Lead sponsor: Brigham and Women's Hospital; Other
Enrollment: 771 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) Dietary Supplement

Dietary Supplement

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: Jul 31, 2012
Primary completion: Nov 30, 2017
Completion: Aug 1, 2023
Last update posted: Apr 27, 2026

2012 – 2023

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 NCT01747447, 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 27, 2026 · Synced May 19, 2026

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The complete protocol, eligibility criteria, and contact information for NCT01747447 live on ClinicalTrials.gov.

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