# Vitamin D/Calcium Polyp Prevention Study

> **NCT00153816** · PHASE2,PHASE3 · COMPLETED · sponsor: **Dartmouth-Hitchcock Medical Center** · enrollment: 2813 (actual)

## Conditions studied

- Colorectal Cancer
- Polyps
- Adenomas

## Interventions

- **DRUG:** Calcium Carbonate
- **DRUG:** Vitamin D3
- **DRUG:** placebo

## Key facts

- **NCT ID:** NCT00153816
- **Lead sponsor:** Dartmouth-Hitchcock Medical Center
- **Sponsor class:** OTHER
- **Phase:** PHASE2,PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2004-07
- **Primary completion:** 2013-10
- **Final completion:** 2016-06
- **Target enrollment:** 2813 (ACTUAL)
- **Last updated:** 2017-03-15

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00153816

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00153816, "Vitamin D/Calcium Polyp Prevention Study". Retrieved via AI Analytics 2026-07-02 from https://api.ai-analytics.org/clinical/NCT00153816. Licensed CC0.

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