Study To Understand Fall Reduction and Vitamin D in You
Public ClinicalTrials.gov record NCT02166333. 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.
Official title
Vitamin D Supplements to Prevent Falls in Older Adults: A Dose-Response Trial
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Vitamin D supplements might substantially reduce the risk of falls, potentially by more than 25%. The proposed study is a clinical trial that will determine the effects of 4 doses of vitamin D (200 International Units \[IU\]/day, 1000 IU/day, 2000 IU/d and 4000 IU/d) as a means to prevent falls in high-risk adults, ages 70 and older. Results of this trial will be directly relevant to public health and clinical guidelines, and will immediately influence policy.
Study identification
- NCT ID
- NCT02166333
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 688 participants
Conditions and interventions
Conditions
Interventions
- 200 IU/d cholecalciferol Dietary Supplement
- 1000 IU/d cholecalciferol Dietary Supplement
- 2000 IU/d cholecalciferol Dietary Supplement
- 4000 IU/d cholecalciferol Dietary Supplement
Dietary Supplement
Eligibility (public fields only)
- Age range
- 70 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
- Jun 29, 2015
- Primary completion
- May 30, 2019
- Completion
- Jun 6, 2019
- Last update posted
- May 13, 2021
2015 – 2019
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| ProHealth Clinical Research Unit | Baltimore | Maryland | 21207 | — |
| Comstock Center for Public Health Research and Prevention | Hagerstown | Maryland | 21740 | — |
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 NCT02166333, 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 May 13, 2021 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02166333 live on ClinicalTrials.gov.