Crick
HomeTrialsGenesDrugs23andMeGraphBlogContact
  • Home
  • Trials
  • Genes
  • Drugs
  • 23andMe
  • Graph
  • Blog
  • Contact
Crick

An open-source clinical intelligence platform. Explore clinical trials, gene networks, and molecular structures using public data sources.

Data Sources

  • ClinicalTrials.gov
  • OpenTargets
  • ClinVar
  • PubChem

Links

  • Contact
  • Privacy

© 2026 Crick. All rights reserved.

Crick is for educational purposes only. Not medical advice.

Results for “COVID-19, Hydroxychloroquine Sulfate”

Filters

Phase
Early Phase 1
Phase 1
Phase 2
Phase 3
Phase 4
Status
Recruiting
Active, Not Recruiting
Not Yet Recruiting
Completed
Enrolling by Invitation

Showing 19 of 0 results

Not applicableWithdrawnNCT04418193
What this trial is testing

Patient Preference Trial for COVID-19 (PPT-COVID)

Who this might be right for
Coronavirus
Centre Hospitalier Princesse Grace
Post-approval studies (Phase 4)Study completedNCT04466540
What this trial is testing

Randomized Placebo-controlled Trial of Hydroxychloroquine in Outpatient Cases With Coronavirus Disease 2019 (COVID-19)

Who this might be right for
COVID-19
Hospital Alemão Oswaldo Cruz 1,372
Testing effectiveness (Phase 2)Study completedNCT04333225
What this trial is testing

Hydroxychloroquine in the Prevention of COVID-19 Infection in Healthcare Workers

Who this might be right for
COVID-19
Baylor Research Institute 221
Post-approval studies (Phase 4)UnknownNCT04359316
What this trial is testing

Azithromycin in Hospitalized COVID-19 Patients

Who this might be right for
COVID-19
Shahid Beheshti University of Medical Sciences 40
Post-approval studies (Phase 4)Temporarily pausedNCT04334967
What this trial is testing

Hydroxychloroquine in Patients With Newly Diagnosed COVID-19 Compared to Standard of Care

Who this might be right for
COVID-19Corona Virus InfectionSARS-CoV-2+2 more
Providence Health & Services 13
Large-scale testing (Phase 3)Study completedNCT04358081
What this trial is testing

Hydroxychloroquine Monotherapy and in Combination With Azithromycin in Patients With Moderate and Severe COVID-19 Disease

Who this might be right for
Covid-19
Novartis Pharmaceuticals 20
Large-scale testing (Phase 3)Study completedNCT04322123
What this trial is testing

Safety and Efficacy of Hydroxychloroquine Associated With Azithromycin in SARS-Cov-2 Virus (COVID-19)

Who this might be right for
Coronavirus Infections
Hospital do Coracao 667
Post-approval studies (Phase 4)WithdrawnNCT04382625
What this trial is testing

Hydroxychloroquine in SARS-CoV-2 (COVID-19) Pneumonia Trial

Who this might be right for
SARS-CoV-2 PneumoniaCOVID-19
Kootenai Health
Large-scale testing (Phase 3)Study completedNCT04334928
What this trial is testing

Randomized Clinical Trial for the Prevention of SARS-CoV-2 Infection (COVID-19) in Healthcare Personnel

Who this might be right for
Coronavirus Infection
Plan Nacional sobre el Sida (PNS) 1,002
Large-scale testing (Phase 3)Study completedNCT04331834
What this trial is testing

Pre-Exposure Prophylaxis With Hydroxychloroquine for High-Risk Healthcare Workers During the COVID-19 Pandemic

Who this might be right for
COVID-19
Barcelona Institute for Global Health 275
Testing effectiveness (Phase 2)Study completedNCT04350281
What this trial is testing

Double Therapy With IFN-beta 1b and Hydroxychloroquine

Who this might be right for
COVID
The University of Hong Kong 60
Testing effectiveness (Phase 2)Study completedNCT04329832
What this trial is testing

Hydroxychloroquine vs. Azithromycin for Hospitalized Patients With Suspected or Confirmed COVID-19

Who this might be right for
COVID-19
Intermountain Health Care, Inc. 85
Large-scale testing (Phase 3)WithdrawnNCT04385264
What this trial is testing

#StayHome: Early Hydroxychloroquine to Reduce Secondary Hospitalisation and Household Transmission in COVID-19

Who this might be right for
COVID-19
Center for Primary Care and Public Health (Unisante), University of Lausanne, Switzerland
Large-scale testing (Phase 3)Ended earlyNCT04353271
What this trial is testing

Trial of Hydroxychloroquine In Covid-19 Kinetics

Who this might be right for
Covid 19Corona Virus Infection
University of South Alabama 3
Large-scale testing (Phase 3)UnknownNCT04377646
What this trial is testing

Hydroxychloroquine and Zinc in the Prevention of COVID-19 Infection in Military Healthcare Workers

Who this might be right for
Sars-CoV2COVID19
Military Hospital of Tunis 660
Large-scale testing (Phase 3)WithdrawnNCT04347512
What this trial is testing

EVALUATION OF THE EFFICACY OF THE HYDROXYCHLOROQUINE-AZITHROMYCIN COMBINATION IN THE IN THE PREVENTION OF COVID-19 RELATED SDRA

Who this might be right for
Sars-CoV-2, Community-Acquired Pneumonia,COVID-19
University Hospital, Strasbourg, France
Large-scale testing (Phase 3)Ended earlyNCT04345692
What this trial is testing

Controlled Clinical Trial: Hydroxychloroquine for the Treatment of COVID-19 in Hospitalized Patients

Who this might be right for
COVID-19
Queen's Medical Center 17
Testing effectiveness (Phase 2)WithdrawnNCT04731051
What this trial is testing

The Potential Use of Inhaled Hydroxychloroquine for the Treatment of COVID-19 in Cancer Patients

Who this might be right for
2019 Novel Coronavirus
King Hussein Cancer Center
Testing effectiveness (Phase 2)Ended earlyNCT04363827
What this trial is testing

Protect: Study With Hydroxychloroquine for Prevention and Early Phase Treatment of Coronavirus Disease (COVID-19)

Who this might be right for
COVID19HydroxychloroquineProphylaxis+2 more
Istituto Romagnolo per lo Studio dei Tumori Dino Amadori IRST S.r.l. IRCCS 155