# Dietary Supplementation With 25-hydroxyvitamin D3 in Older Adults

> **NCT01398202** · NA · COMPLETED · sponsor: **University College Cork** · enrollment: 56 (actual)

## Conditions studied

- Vitamin D Status as Reflected by Serum 25-hydroxyvitamin D

## Interventions

- **DIETARY_SUPPLEMENT:** vitamin D3
- **DIETARY_SUPPLEMENT:** 25-hydroxyvitamin D3
- **DIETARY_SUPPLEMENT:** 25-hydroxyvitamin D (20 microgram/day)
- **DIETARY_SUPPLEMENT:** Placebo

## Key facts

- **NCT ID:** NCT01398202
- **Lead sponsor:** University College Cork
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2011-01
- **Primary completion:** 2011-07
- **Final completion:** 2011-09
- **Target enrollment:** 56 (ACTUAL)
- **Last updated:** 2015-12-02


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01398202

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01398202, "Dietary Supplementation With 25-hydroxyvitamin D3 in Older Adults". Retrieved via AI Analytics 2026-06-04 from https://api.ai-analytics.org/clinical/NCT01398202. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*