A Study of Hydroxychloroquine, Vitamin C, Vitamin D, and Zinc for the Prevention of COVID-19 Infection (HELPCOVID-19)
A Randomized, Double-Blind, Placebo-Controlled Phase IIa Study of Hydroxychloroquine, Vitamin C, Vitamin D, and Zinc for the Prevention of COVID-19 Infection
Sponsor: DSCS CRO
This PHASE2 trial investigates COVID and COVID-19 and is currently completed. DSCS CRO leads this study, which shows 12 recorded versions since 2020 — indicating substantial longitudinal coverage. Longitudinal tracking of infectious disease trials helps identify durability of treatment effects.
Status Flow
Change History
12 versions recorded-
Jul 2025 — Present [monthly]
Completed PHASE2
Status: Active Not Recruiting → Completed
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Oct 2024 — Jul 2025 [monthly]
Active Not Recruiting PHASE2
Status: Recruiting → Active Not Recruiting
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Sep 2024 — Oct 2024 [monthly]
Recruiting PHASE2
-
Jul 2024 — Sep 2024 [monthly]
Recruiting PHASE2
-
Nov 2021 — Jul 2024 [monthly]
Recruiting PHASE2
▶ Show 7 earlier versions
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Oct 2021 — Nov 2021 [monthly]
Recruiting PHASE2
-
Mar 2021 — Oct 2021 [monthly]
Recruiting PHASE2
-
Jan 2021 — Mar 2021 [monthly]
Recruiting PHASE2
-
Aug 2020 — Jan 2021 [monthly]
Recruiting PHASE2
-
Jul 2020 — Aug 2020 [monthly]
Recruiting PHASE2
Status: Not Yet Recruiting → Recruiting
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Jun 2020 — Jul 2020 [monthly]
Not Yet Recruiting PHASE2
-
May 2020 — Jun 2020 [monthly]
Not Yet Recruiting PHASE2
First recorded
Eligibility Summary
No eligibility information available.
Contact Information
- DSCS CRO
- ProgenaBiome
For direct contact, visit the study record on ClinicalTrials.gov .