# Daily Vitamin D for Sickle-cell Respiratory Complications

> **NCT04170348** · PHASE2 · COMPLETED · sponsor: **Columbia University** · enrollment: 58 (actual)

## Conditions studied

- Sickle Cell Disease
- Anemia, Sickle Cell
- Anemia, Hemolytic, Congenital
- Respiratory Tract Diseases
- Respiration Disorders
- Acute Chest Syndrome
- Lung Diseases
- Asthma
- Respiratory Tract Infections
- Nutrition Disorders
- Deficiency Diseases Vitamin
- Vitamin D Deficiency

## Interventions

- **DRUG:** Daily oral vitamin D3, 3,333 IU
- **DRUG:** Monthly oral vitamin D3, 100,000 IU
- **DRUG:** Placebo oral tablet

## Key facts

- **NCT ID:** NCT04170348
- **Lead sponsor:** Columbia University
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-09-15
- **Primary completion:** 2024-06-18
- **Final completion:** 2024-06-18
- **Target enrollment:** 58 (ACTUAL)
- **Last updated:** 2025-09-24

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04170348

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04170348, "Daily Vitamin D for Sickle-cell Respiratory Complications". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT04170348. Licensed CC0.

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