# The Variability of 25-hydroxyvitamin D Response From Crystalline 25-hydroxyvitamin D3

> **NCT01633658** · NA · WITHDRAWN · sponsor: **Creighton University**

## Conditions studied

- Vitamin D Deficiency

## Interventions

- **DIETARY_SUPPLEMENT:** cholecalciferol
- **DIETARY_SUPPLEMENT:** 25(OH)D

## Key facts

- **NCT ID:** NCT01633658
- **Lead sponsor:** Creighton University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** WITHDRAWN
- **Start date:** 2012-11
- **Primary completion:** 2013-11
- **Final completion:** 2013-11
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** Protocol has changed
- **Last updated:** 2013-05-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01633658

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01633658, "The Variability of 25-hydroxyvitamin D Response From Crystalline 25-hydroxyvitamin D3". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT01633658. Licensed CC0.

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