# High Dose Interval Vitamin D Supplementation in Patients With Inflammatory Bowel Disease Receiving Biologic Therapy

> **NCT04331639** · — · RECRUITING · sponsor: **Boston Children's Hospital** · enrollment: 50 (estimated)

## Conditions studied

- Inflammatory Bowel Disease
- Crohn Disease
- Ulcerative Colitis
- Vitamin D Deficiency

## Interventions

- **DIETARY_SUPPLEMENT:** vitamin D3

## Key facts

- **NCT ID:** NCT04331639
- **Lead sponsor:** Boston Children's Hospital
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2020-11-01
- **Primary completion:** 2024-09-01
- **Final completion:** 2025-12-31
- **Target enrollment:** 50 (ESTIMATED)
- **Last updated:** 2025-03-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04331639

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04331639, "High Dose Interval Vitamin D Supplementation in Patients With Inflammatory Bowel Disease Receiving Biologic Therapy". Retrieved via AI Analytics 2026-09-26 from https://api.ai-analytics.org/clinical/NCT04331639. Licensed CC0.

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