# Vitamin D Supplementation in TB Prevention

> **NCT02276755** · PHASE3 · COMPLETED · sponsor: **Harvard School of Public Health (HSPH)** · enrollment: 8851 (actual)

## Conditions studied

- Latent Tuberculosis

## Interventions

- **DIETARY_SUPPLEMENT:** Cholecalciferol (vitamin D3)
- **OTHER:** Placebo

## Key facts

- **NCT ID:** NCT02276755
- **Lead sponsor:** Harvard School of Public Health (HSPH)
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2015-09
- **Primary completion:** 2019-06
- **Final completion:** 2020-06
- **Target enrollment:** 8851 (ACTUAL)
- **Last updated:** 2020-07-16


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02276755

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02276755, "Vitamin D Supplementation in TB Prevention". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT02276755. Licensed CC0.

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