# Optimizing Vitamin D in the Elderly

> **NCT01554241** · NA · COMPLETED · sponsor: **University of California, San Francisco** · enrollment: 86 (actual)

## Conditions studied

- Deficiency of Vitamin D3

## Interventions

- **DIETARY_SUPPLEMENT:** D3 2000 IU/day
- **DIETARY_SUPPLEMENT:** D3 4000 IU/day
- **DIETARY_SUPPLEMENT:** D3 50,000 IU weekly
- **DIETARY_SUPPLEMENT:** vitamin D3 800 IU/day

## Key facts

- **NCT ID:** NCT01554241
- **Lead sponsor:** University of California, San Francisco
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2012-09
- **Primary completion:** 2014-09
- **Final completion:** 2014-09
- **Target enrollment:** 86 (ACTUAL)
- **Last updated:** 2015-02-18


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01554241

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01554241, "Optimizing Vitamin D in the Elderly". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT01554241. Licensed CC0.

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