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Optimizing Vitamin D in the Elderly

NCT01554241 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 86

Last updated 2015-02-18

Study results available
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Summary

Vitamin D deficiency is highly prevalent in older people in the absence of vitamin D supplementation. The limited data available show marked inter-individual variability in response to vitamin D supplementation in very old, frail elderly with almost 25% remaining vitamin D deficient (25-OH D \< 20 ng/mL) when receiving the currently recommended 800 IU/day vitamin D. This proposal is for exploratory research on the use of a wide range of oral vitamin D3 doses in frail elderly living in controlled living environments.

Conditions

  • Deficiency of Vitamin D3

Interventions

DIETARY_SUPPLEMENT

D3 2000 IU/day

2000 IU/day D3

DIETARY_SUPPLEMENT

D3 4000 IU/day

vitamin D3 4000 IU/day

DIETARY_SUPPLEMENT

D3 50,000 IU weekly

vitamin D3 50,000 IU/week

DIETARY_SUPPLEMENT

vitamin D3 800 IU/day

vitamin D3 800 IU/day

Sponsors & Collaborators

Principal Investigators

  • Janice B Schwartz, MD · University of California, San Francisco

Study Design

Allocation
RANDOMIZED
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2012-09-30
Primary Completion
2014-09-30
Completion
2014-09-30

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01554241 on ClinicalTrials.gov