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ClinicalTrials.gov public records Last synced Oct 7, 2026, 4:08 AM EDT

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Showing 25–48 of 235 matching trials from the live ClinicalTrials.gov search.
Filters: "long haul COVID" Clear all
Not listed No phase listed Observational Accepts healthy volunteers

Open-label, Post-marketing, Prospective Study to Assess Impact of COVID-19 on Cognitive Function in Patients

NCT04950673
View directory record Official record
Conditions
Cognitive Decline, Cognitive Dysfunction, Brain Health, Post CoV-2 Syndrome, COVID Long-Haul
Interventions
Cognivue
Device
Lead sponsor
Cognivue, Inc.
Industry
Eligibility
18 Years to 95 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
4
States / cities
Irvine, California • Visalia, California • Boca Raton, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2022 · Synced Oct 7, 2026, 4:08 AM EDT
Active, not recruiting Not applicable Interventional

tVNS in Long COVID-19

NCT06585254
View directory record Official record
Conditions
Long COVID, Chronic Fatigue Syndrome
Interventions
Transcutaneous vagus nerve stimulator
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
21 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Completed Phase 3 Interventional Results available

COVID-OUT: Early Outpatient Treatment for SARS-CoV-2 Infection (COVID-19)

NCT04510194
View directory record Official record
Conditions
Covid19, SARS-CoV Infection
Interventions
Metformin, Placebo, Fluvoxamine, Ivermectin
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
30 Years to 85 Years
Enrollment
1,323 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
7
States / cities
Sylmar, California • Aurora, Colorado • Golden, Colorado + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Not listed Not applicable Interventional

Amygdala Insula Retraining in the Management of Long COVID Symptoms

NCT05851846
View directory record Official record
Conditions
Long COVID
Interventions
Amygdala insula retraining
Behavioral
Lead sponsor
Miami VA Healthcare System
Federal
Eligibility
Not listed
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
3
States / cities
Fort Lauderdale, Florida • Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 10, 2023 · Synced Oct 7, 2026, 4:08 AM EDT
Completed Not applicable Interventional Results available

Transcutaneous Electrical Nerve Stimulation (TENS) in Patients With Postacute Sequelae of Sars-CoV-2

NCT05200858
View directory record Official record
Conditions
Postacute Sequelae of Sars-CoV-2, Post-Acute COVID-19 Syndrome, Widespread Chronic Pain, Fatigue Syndrome, Chronic, Gait, Unsteady
Interventions
TENS - high-dose, TENS - low-dose
Device
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 16, 2024 · Synced Oct 7, 2026, 4:08 AM EDT
Completed No phase listed Observational

A Study to Understand How the Use of Paxlovid Affected Healthcare Use in People With Pre-existing Conditions.

NCT07090486
View directory record Official record
Conditions
COVID-19
Interventions
nirmatrelvir-ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
14,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Oct 7, 2026, 4:08 AM EDT
Terminated Phase 3 Interventional Results available

Treatment of Long CoronaVirus Disease (COVID) (TLC) Feasibility Trial

NCT05946551
View directory record Official record
Conditions
COVID-19
Interventions
Cetirizine, Famotidine, Cetirizine Placebo, Famotidine Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
4
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Oct 7, 2026, 4:08 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Stellate Ganglion Block for COVID-19-Induced Olfactory Dysfunction

NCT05445921
View directory record Official record
Conditions
Anosmia, Hyposmia, Parosmia, Olfactory Disorder
Interventions
Stellate Ganglion Block
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Completed Phase 3 Interventional Results available

Homeopathic Treatment of Post-acute COVID-19 Syndrome

NCT05104749
View directory record Official record
Conditions
Post-acute Covid-19 Syndrome
Interventions
Homeopathic Medication, Placebo
Drug · Other
Lead sponsor
Southwest College of Naturopathic Medicine
Other
Eligibility
18 Years to 64 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 22, 2023 · Synced Oct 7, 2026, 4:08 AM EDT
Not yet recruiting Phase 2 Interventional

SARS-CoV-2 and Herpesvirus Inhibition for Ending Long COVID Dysfunction

NCT07597902
View directory record Official record
Conditions
Post-acute Sequelae of COVID-19, Long COVID
Interventions
Valacyclovir, Celecoxib, Paxlovid, Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Long COVID-19 Intervention Using Digital Health & Technology

NCT05616806
View directory record Official record
Conditions
Long COVID, Distress Tolerance
Interventions
iENDURE
Behavioral
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 4, 2023 · Synced Oct 7, 2026, 4:08 AM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety Study of Efgartigimod in Adults With Post-COVID-19 POTS

NCT05633407
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Efgartigimod, Placebo
Drug
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
11
States / cities
La Jolla, California • Palo Alto, California • Glenview, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Oct 7, 2026, 4:08 AM EDT
Completed No phase listed Observational

Yale COVID-19 Recovery Study

NCT04895189
View directory record Official record
Conditions
Covid19 Sequelae
Interventions
No intervention
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Oct 7, 2026, 4:08 AM EDT
Recruiting Phase 1Phase 2 Interventional

Lumbrokinase for Adults With Long Covid, Post-treatment Lyme Disease Syndrome, and Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

NCT06511050
View directory record Official record
Conditions
Long Covid, Post-treatment Lyme Disease Syndrome, Chronic Fatigue Syndrome, Myalgic Encephalomyelitis
Interventions
Lumbrokinase
Dietary Supplement
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Completed No phase listed Observational

An Observational Study of Neurologic Function After COVID-19 Infection

NCT04564287
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Oct 7, 2026, 4:08 AM EDT
Recruiting Not applicable Interventional

Dietary Intervention to Mitigate Post-Acute COVID-19 Syndrome

NCT05977179
View directory record Official record
Conditions
Post-Acute COVID-19 Syndrome, Fatigue
Interventions
Dietary intervention to mitigate Post-Acute COVID-19 Syndrome, Attention Control
Other
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
50 Years to 94 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 23, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Completed Not applicable Interventional Results available

Intermittent Fasting and a No-Sugar Diet for Long COVID Symptoms

NCT06214455
View directory record Official record
Conditions
Long Covid19, Long COVID
Interventions
Low sugar diet and 10-12 hour eating window, Low sugar diet, 8 hour eating window and fasting
Other
Lead sponsor
Pacific Northwest University of Health Sciences
Other
Eligibility
19 Years to 69 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Boulder, Colorado • Yakima, Washington
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Not yet recruiting Phase 1 Interventional

Phase I Open-Label Safety Trial of Pembrolizumab for Neurological Post- Acute Sequelae of SARS-CoV-2 (PD1-PASC I)

NCT07388550
View directory record Official record
Conditions
Post-Acute COVID-19 Syndrome
Interventions
Keytruda
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 110 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Pathophysiology of Dysautonomia and Postural Tachycardia Syndrome (POTS) in Post-viral Syndromes and COVID-19

NCT07405515
View directory record Official record
Conditions
POTS, POTS - Postural Orthostatic Tachycardia Syndrome, Dysautonomia, Autonomic Dysfunction
Interventions
Blood Sample Collection
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Not yet recruiting Phase 2Phase 3 Interventional

A Multi-Center, Individually-Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Superiority Trial to Evaluate the Efficacy of the Combination of Maraviroc and Atorvastatin for the Treatment of Subjects With Long COVID

NCT06974084
View directory record Official record
Conditions
Long COVID
Interventions
Maraviroc (MVC), Atorvastatin, 10mg, 20mg, 40mg, Placebo, Maraviroc, Placebo, Atorvastatin
Drug
Lead sponsor
HealthBio, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
252 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 18, 2026 · Synced Oct 7, 2026, 4:08 AM EDT
Withdrawn Phase 2 Interventional

A Study of Amantadine for Cognitive Dysfunction in Patients With Long-Covid

NCT06234462
View directory record Official record
Conditions
Long COVID, Post-Acute COVID-19 Syndrome
Interventions
Amantadine, Physical, Occupational, Speech Therapy, Provider Counseling, Medications for symptoms management
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
20 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Oct 7, 2026, 4:08 AM EDT
Completed Phase 1 Interventional

A Study Evaluating the Efficacy of the Vielight Neuro RX Gamma in the Treatment of Post COVID-19 Cognitive Impairment

NCT05857124
View directory record Official record
Conditions
Post COVID-19 Cognitive Impairment
Interventions
Vielight Neuro RX Gamma active device, Vielight Neuro RX Gamma sham device
Device
Lead sponsor
Vielight Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fullerton, California
Source: ClinicalTrials.gov public record
Updated Jun 15, 2025 · Synced Oct 7, 2026, 4:08 AM EDT
Not yet recruiting Phase 2 Interventional

Effect of Metabolic Modulation on a Post-acute COVID-19 Vaccination Syndrome (PACVS) Cohort

NCT06967428
View directory record Official record
Conditions
Vaccine Adverse Reaction, Post Acute Covid-19 Vaccination Syndrome
Interventions
Combined metabolic modulator, Rice Protein Powder with Vitamin C
Combination Product · Dietary Supplement
Lead sponsor
Independent Medical Alliance
Other
Eligibility
16 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Oct 7, 2026, 4:08 AM EDT