# A Study to Investigate the Effect of Vitamin D3 Supplementation on Asthma Symptoms in Adults With Asthma (VITDAS)

> **NCT04117581** · NA · COMPLETED · sponsor: **University of Chester** · enrollment: 32 (actual)

## Conditions studied

- Asthma
- Vitamin D Deficiency
- Nutritional Deficiency
- Inflammation

## Interventions

- **DIETARY_SUPPLEMENT:** Vitamin D3
- **OTHER:** Placebo

## Key facts

- **NCT ID:** NCT04117581
- **Lead sponsor:** University of Chester
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2019-10-28
- **Primary completion:** 2022-04-01
- **Final completion:** 2022-04-01
- **Target enrollment:** 32 (ACTUAL)
- **Last updated:** 2022-11-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04117581

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04117581, "A Study to Investigate the Effect of Vitamin D3 Supplementation on Asthma Symptoms in Adults With Asthma (VITDAS)". Retrieved via AI Analytics 2026-07-03 from https://api.ai-analytics.org/clinical/NCT04117581. Licensed CC0.

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