# Hydroxychloroquine as Post-Exposure Prophylaxis Against COVID-19 Infection

> **NCT04372017** · PHASE3 · TERMINATED · sponsor: **Sanford Health** · enrollment: 1 (actual)

## Conditions studied

- COVID-19
- SARS-CoV 2

## Interventions

- **DRUG:** Hydroxychloroquine
- **DIETARY_SUPPLEMENT:** Vitamin D

## Key facts

- **NCT ID:** NCT04372017
- **Lead sponsor:** Sanford Health
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2020-05-14
- **Primary completion:** 2021-06-04
- **Final completion:** 2021-06-04
- **Target enrollment:** 1 (ACTUAL)
- **Why stopped:** Unlikelihood of benefit based on other studies.
- **Last updated:** 2021-12-10


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04372017

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04372017, "Hydroxychloroquine as Post-Exposure Prophylaxis Against COVID-19 Infection". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT04372017. Licensed CC0.

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