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ClinicalTrials.gov public records Last synced Oct 15, 2026, 2:56 PM EDT

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Showing 481–504 of 1,073 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: COVID, Coronavirus Clear all
Completed Not applicable Interventional

Coronavirus 2019 (COVID-19)- Using Ascorbic Acid and Zinc Supplementation

NCT04342728
View directory record Official record
Conditions
COVID, Corona Virus Infection
Interventions
Ascorbic Acid, Zinc Gluconate, Ascorbic Acid and Zinc Gluconate, Standard of Care
Dietary Supplement · Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Weston, Florida • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 16, 2021 · Synced Oct 15, 2026, 2:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A COVID-19 Study to Evaluate Safety and Pharmacokinetics of COVID-HIGIV Administered in Healthy Adults

NCT04661839
View directory record Official record
Conditions
COVID-19
Interventions
COVID-HIGIV, Placebo (saline)
Biological · Other
Lead sponsor
Emergent BioSolutions
Industry
Eligibility
18 Years to 60 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 8, 2025 · Synced Oct 15, 2026, 2:56 PM EDT
Recruiting Phase 2 Interventional

SARS-CoV-2 Specific Monoclonal Antibody for Post-COVID-19 Conditions (Long COVID)

NCT07021794
View directory record Official record
Conditions
Post-COVID / Long-COVID
Interventions
Placebo, Sipavibart
Drug · Biological
Lead sponsor
Nancy Klimas
Other
Eligibility
18 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 15, 2026, 2:56 PM EDT
Active, not recruiting Phase 2 Interventional

Low-Dose Radiotherapy For Patients With SARS-COV-2 (COVID-19) Pneumonia

NCT04466683
View directory record Official record
Conditions
Covid-19, Sars-CoV2, Pneumonia
Interventions
Low dose radiation 35 cGy, High dose radiation 100 cGy
Radiation
Lead sponsor
Ohio State University
Other
Eligibility
50 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
6
States / cities
Boca Raton, Florida • Miami, Florida • Maywood, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Oct 15, 2026, 2:56 PM EDT
Terminated Phase 2 Interventional Results available

Prazosin to Prevent COVID-19 (PREVENT-COVID Trial)

NCT04365257
View directory record Official record
Conditions
COVID-19
Interventions
Prazosin, Standard of care
Drug · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
45 Years to 85 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 10, 2023 · Synced Oct 15, 2026, 2:56 PM EDT
Withdrawn Phase 3 Interventional Accepts healthy volunteers

Evaluation of the Efficacy of Xylitol Nasal Spray Against SARS-CoV-2

NCT04610801
View directory record Official record
Conditions
Covid19
Interventions
Nasal Spray
Drug
Lead sponsor
Larkin Community Hospital
Other
Eligibility
18 Years to 90 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 16, 2023 · Synced Oct 15, 2026, 2:56 PM EDT
Active, not recruiting Not applicable Interventional

HOBSCOTCH for People With Post Acute COVID-19 Syndrome (PACS)

NCT06391489
View directory record Official record
Conditions
Post Acute COVID 19 Syndrome, Memory Impairment, Memory Dysfunction, Cognitive Dysfunction
Interventions
HOBSCOTCH-PACS
Behavioral
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
20 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Feb 20, 2026 · Synced Oct 15, 2026, 2:56 PM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Flu COVID Vaccine Views

NCT07871448
View directory record Official record
Conditions
Influenza, COVID-19, Vaccination Willingness
Interventions
Survey
Other
Lead sponsor
George Washington University
Other
Eligibility
18 Years to 89 Years
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 15, 2026, 2:56 PM EDT
Terminated Not applicable Interventional Results available

Study Assessing Vagus Nerve Stimulation in CoViD-19 Respiratory Symptoms

NCT04382391
View directory record Official record
Conditions
COVID, Corona Virus Infection, Respiratory Failure, Respiratory Distress Syndrome, Adult, ARDS, Human, SARS (Severe Acute Respiratory Syndrome)
Interventions
gammaCore® Sapphire (non-invasive vagus nerve stimulator), Standard of care therapies
Device · Other
Lead sponsor
Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 1, 2024 · Synced Oct 15, 2026, 2:56 PM EDT
Completed Not applicable Interventional Results available

Impact of Nasal Saline Irrigations on Viral Load in Patients With COVID-19

NCT04347538
View directory record Official record
Conditions
COVID 19
Interventions
Saline Nasal Irrigation, Saline with Baby Shampoo Nasal Irrigation
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 15, 2024 · Synced Oct 15, 2026, 2:56 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

To Evaluate the Safety, Tolerability, Efficacy and Immunogenicity of BNT162b2 Boosting Strategies Against COVID-19 in Participants ≥12 Years of Age.

NCT04955626
View directory record Official record
Conditions
SARS-CoV-2 Infection, COVID-19
Interventions
BNT162b2, Placebo, BNT162b2 OMI, Combination BNT162b2 and BNT162b2 OMI, Combination (Bivalent) BNT162b2 and BNT162b2 OMI
Biological · Other
Lead sponsor
BioNTech SE
Industry
Eligibility
12 Years and older
Enrollment
16,372 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
139
States / cities
Athens, Alabama • Birmingham, Alabama • Huntsville, Alabama + 99 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2025 · Synced Oct 15, 2026, 2:56 PM EDT
Withdrawn Phase 2 Interventional

Asymptomatic COVID-19 Trial

NCT04374552
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
Hydroxychloroquine sulfate &Azithromycin, Placebo
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
20 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 2, 2020 · Synced Oct 15, 2026, 2:56 PM EDT
Completed No phase listed Observational

Symptom Tracking in Long COVID Patients Using Formula C™ Sublingual Drops

NCT06163690
View directory record Official record
Conditions
Long COVID, Long Covid19, Post-Acute COVID-19, Post-Acute COVID-19 Syndrome, Long Haul COVID, Long-Haul COVID-19
Interventions
Endourage Targeted Wellness Formula C™, a full hemp flower extract
Combination Product
Lead sponsor
Endourage, LLC
Industry
Eligibility
21 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 25, 2025 · Synced Oct 15, 2026, 2:56 PM EDT
Recruiting Phase 3 Interventional

A Study to Learn About a Study Medicine Called Ibuzatrelvir in Adult and Adolescent Patients With COVID-19 Who Are Not Hospitalized But Are at Risk For Severe Disease

NCT06679140
View directory record Official record
Conditions
COVID-19 SARS-CoV-2 Infection
Interventions
ibuzatrelvir, placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years and older
Enrollment
2,330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
90
States / cities
Huntsville, Alabama • Little Rock, Arkansas • Bakersfield, California + 66 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 15, 2026, 2:56 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Longitudinal At Home Smell Testing to Detect Infection by SARS-CoV-2

NCT05040659
View directory record Official record
Conditions
Anosmia, Asymptomatic COVID-19, COVID-19 Respiratory Infection, Influenza, Healthy, PASC Post Acute Sequelae of COVID 19
Interventions
AROMHA Longitudinal Smell Test
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 100 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 6, 2026 · Synced Oct 15, 2026, 2:56 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

A Trial Evaluating the Safety and Effects of an RNA Vaccine ARCT-021 in Healthy Adults

NCT04668339
View directory record Official record
Conditions
Covid19, SARS-CoV Infection, Corona Virus Infection
Interventions
ARCT-021 single dose priming, ARCT-021 two lower dose priming, ARCT-021 two higher dose priming, Placebo (two doses), priming, Randomized booster, Placebo booster
Biological
Lead sponsor
Arcturus Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
581 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
12
States / cities
Chandler, Arizona • Tucson, Arizona • San Diego, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 15, 2025 · Synced Oct 15, 2026, 2:56 PM EDT
Completed No phase listed Observational Results available

Effectiveness of BNT162b2 Formulations Using State Vaccine Registry and Insurance Claims Data

NCT06199934
View directory record Official record
Conditions
SARS-CoV-2, COVID-19 Vaccines
Interventions
Vaccination
Biological
Lead sponsor
Pfizer
Industry
Eligibility
Not listed
Enrollment
19,853,610 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Oct 15, 2026, 2:56 PM EDT
Completed No phase listed Observational

Preop COVID Testing Patterns

NCT04838119
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
375,692 participants
Timeline
2021
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 26, 2021 · Synced Oct 15, 2026, 2:56 PM EDT
Completed Phase 2 Interventional

Photobiomodulation Laser Therapy for COVID-19 Positive Patients With Pulmonary Disease

NCT04391712
View directory record Official record
Conditions
COVID-19
Interventions
MLS Laser, Regular Inpatient Medical Care
Device · Other
Lead sponsor
Lowell General Hospital
Other
Eligibility
18 Years to 90 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Lowell, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Oct 15, 2026, 2:56 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

PA-001 Ph.1 Study in Healthy and Elderly Subjects

NCT07518771
View directory record Official record
Conditions
COVID - 19
Interventions
PA-001
Drug
Lead sponsor
PeptiDream Inc.
Industry
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Apr 9, 2026 · Synced Oct 15, 2026, 2:56 PM EDT
Terminated Phase 2 Interventional Results available

COVID-FIS: Pilot in COVID-19 (SARS-CoV-2) of Fisetin in Older Adults in Nursing Homes

NCT04537299
View directory record Official record
Conditions
Covid19, SARS-CoV Infection
Interventions
Fisetin, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
65 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Oct 15, 2026, 2:56 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Long COVID-19 [11C]CPPC Study

NCT06223971
View directory record Official record
Conditions
COVID Long-Haul
Interventions
[11C]CPPC Injection
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Oct 15, 2026, 2:56 PM EDT