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Showing 1–24 of 199 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Long-Haul COVID-19 Clear all
Completed Not applicable Interventional

Qigong for Post Acute Sequelae of COVID-19 Infection

NCT05675995
View directory record Official record
Conditions
Long COVID
Interventions
Qigong
Behavioral
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Phase 2 Interventional

Evaluating the Neuromodulatory Effect of Ketamine in Long COVID-19

NCT06821087
View directory record Official record
Conditions
Long COVID
Interventions
Ketamine only
Drug
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 28, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Phase 2 Interventional

Nitrite Supplementation in Long COVID Patients

NCT05618574
View directory record Official record
Conditions
Long COVID, Cardiorespiratory Fitness
Interventions
140 ml per day of Beet-It nitrate beverage (James White Drinks Ltd., Ipswich, UK), 210 ml of nitrate-depleted placebo
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 18, 2025 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Phase 1 Interventional

Dual Sympathetic Blocks for Patients Experiencing Sympathetically-Mediated Symptoms From Long COVID

NCT05638620
View directory record Official record
Conditions
Post Acute COVID-19 Syndrome, Long COVID, Long Covid19, COVID-19 Recurrent, Post-Acute COVID-19, Post-Acute COVID-19 Infection, SARS-CoV2 Infection, Post Acute Sequelae of COVID-19, Dysautonomia, Dysautonomia Like Disorder, Dysautonomia Orthostatic Hypotension Syndrome, Post COVID-19 Condition, Post-COVID Syndrome, Post COVID-19 Condition, Unspecified, Post-COVID-19 Syndrome
Interventions
stellate ganglion block with 0.5% bupivacaine
Drug
Lead sponsor
Jonathann Kuo, MD
Other
Eligibility
18 Years to 100 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2025 · Synced Jul 23, 2026, 2:13 PM EDT
Completed No phase listed Observational

Index Individuals in SARS-CoV-2 Prevention Research Studies (COVID-19 Index Individuals Companion Study)

NCT05074719
View directory record Official record
Conditions
SARS-CoV-2 Infection, COVID-19, Coronavirus Infection, SARS (Severe Acute Respiratory Syndrome)
Interventions
Not listed
Lead sponsor
University of Washington
Other
Eligibility
10 Years and older
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 14, 2021 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Phase 2 Interventional Results available

Stellate Ganglion Block for COVID-induced Parosmia

NCT06253806
View directory record Official record
Conditions
COVID-19-Induced Parosmia
Interventions
Stellate Ganglion Block, Placebo Sham Injection
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Not applicable Interventional

Restoring Energy With Sub-symptom Threshold Optimized Rehabilitation Exercise for Long COVID

NCT06172803
View directory record Official record
Conditions
Long Covid19, Exercise Intolerance, Riboflavin-Responsive
Interventions
Restoring Energy with Sub-symptom Threshold Aerobic Rehabilitation Exercise, Light Stretching/Breathing Exercises
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 70 Years
Enrollment
4 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 Jun 5, 2024 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pain Relief With Integrative Medicine (PRIMe)?: Feasibility of Acupuncture for Long COVID

NCT06476496
View directory record Official record
Conditions
Long COVID, Pain
Interventions
Acupuncture
Procedure
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
93 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Recruiting Phase 2Phase 3 Interventional

Study of Chemosensory Enhancement Through Neuromodulation Training (SCENT for Long COVID)

NCT05855369
View directory record Official record
Conditions
Smell Dysfunction, Olfactory Disorder, Long COVID
Interventions
Trigeminal Nerve Stimulation (TNS), Active Smell Training (ST), Placebo Smell Training (PBO)
Device · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Not listed No phase listed Observational

Effect of Apollo Wearable on Long COVID-19 Symptoms.

NCT06097442
View directory record Official record
Conditions
Post-acute Sequelae of SARS-COV-2 Infection
Interventions
Not listed
Lead sponsor
The Board of Medicine
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 26, 2023 · Synced Jul 23, 2026, 2:13 PM EDT
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 21, 2022 · Synced Jul 23, 2026, 2:13 PM EDT
Recruiting Phase 3 Interventional

Long Covid (LC)-REVITALIZE - A Long Covid Repurposed Drug Study

NCT06928272
View directory record Official record
Conditions
Long COVID
Interventions
Pirfenidone, Placebo for pirfenidone, Upadacitinib, Placebo for upadacitinib
Drug
Lead sponsor
Douglas D. Fraser
Other
Eligibility
18 Years to 65 Years
Enrollment
348 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Phase 2 Interventional

Amantadine Therapy for Cognitive Impairment in Long COVID

NCT06055244
View directory record Official record
Conditions
Long COVID, Post-COVID19 Condition, Post-Acute COVID19 Syndrome
Interventions
Amantadine
Drug
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Completed No phase listed Observational

Stellate Ganglion Block to Treat Long COVID 19 Case Series

NCT05812209
View directory record Official record
Conditions
Long COVID, Long Covid19, Post-COVID-19 Syndrome, Post Acute COVID-19 Syndrome, Dysautonomia, Anosmia, Dysgeusia, Brain Fog, Muscle Pain, Shortness of Breath, Dizziness, Fatigue Post Viral, Cough, Menstrual Cycle Abnormal, Pain
Interventions
Stellate Ganglion Block
Procedure
Lead sponsor
Metamorphosis LTD
Other
Eligibility
Not listed
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Cañon City, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced Jul 23, 2026, 2:13 PM EDT
Terminated Not applicable Interventional

Mindfulness-Based Stress Reduction Versus Lifestyle Intervention for Long-Haul Covid-19 Parosmia

NCT06789952
View directory record Official record
Conditions
COVID-19
Interventions
Mindfulness-Based Stress Reduction, Lifestyle Intervention
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 22, 2025 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Phase 2 Interventional Results available

Paxlovid for Treatment of Long Covid

NCT05576662
View directory record Official record
Conditions
Post-acute Sequelae of SARS-CoV-2 Infection, Long COVID
Interventions
Nirmatrelvir, Placebo, Ritonavir
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
168 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Sep 3, 2025 · Synced Jul 23, 2026, 2:13 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Ensitrelvir for Viral Persistence and Inflammation in People Experiencing Long COVID

NCT06161688
View directory record Official record
Conditions
Long COVID, Post Acute Sequelae of COVID-19, Post-Acute COVID-19
Interventions
Ensitrelvir, Placebo
Drug · Other
Lead sponsor
Timothy Henrich
Other
Eligibility
18 Years to 69 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Active, not recruiting Phase 2 Interventional

NE3107 in Adults With Neurological Symptoms of Long COVID

NCT06847191
View directory record Official record
Conditions
Long COVID
Interventions
NE3107, Placebo
Drug
Lead sponsor
BioVie Inc.
Industry
Eligibility
18 Years to 69 Years
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
20
States / cities
Palo Alto, California • San Francisco, California • Aurora, Colorado + 16 more
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Jul 23, 2026, 2:13 PM 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 22, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

TaiChi-DTx for Treating Long Covid Symptoms

NCT05419219
View directory record Official record
Conditions
Fatigue, Dyspnea, Cognitive Impairment, Muscle Pain
Interventions
the multi-domain Tai Chi Digital therapy Software Application
Device
Lead sponsor
Tim Shi
Other
Eligibility
18 Years to 75 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Ellicott City, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 14, 2023 · Synced Jul 23, 2026, 2:13 PM EDT
Completed Not applicable Interventional

Long COVID-19 Syndrome Lifestyle Intervention Study

NCT05836402
View directory record Official record
Conditions
Long COVID-19 Syndrome
Interventions
Low carbohydrate diet intervention
Dietary Supplement
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Jul 23, 2026, 2:13 PM EDT
Recruiting Phase 3 Interventional

Low Dose Sirolimus in People With Post-Acute Sequelae of COVID-19 (PASC) Long COVID-19

NCT06960928
View directory record Official record
Conditions
Long COVID-19
Interventions
Low-dose sirolimus, Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Jul 23, 2026, 2:13 PM EDT
Active, not recruiting Phase 2 Interventional

Sodium Citrate in Smell Retraining for People With Post-COVID-19 Olfactory Dysfunction

NCT06204432
View directory record Official record
Conditions
Long Haul COVID-19, Post-Acute COVID-19 Syndrome, Anosmia, Olfaction Disorders
Interventions
Sodium Citrate, Normal Saline, Olfactory Training Kit - "The Olfactory Kit, by AdvancedRx"
Drug · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 19, 2025 · Synced Jul 23, 2026, 2:13 PM EDT