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ClinicalTrials.gov public records Last synced Oct 19, 2026, 7:20 AM EDT

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Showing 1–24 of 69 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Chronic Cough Clear all
Recruiting Phase 2 Interventional

Mechanisms of Change in Behavioral Cough Suppression Therapy for Refractory Chronic Cough

NCT06960759
View directory record Official record
Conditions
Chronic Cough (CC), Refractory Chronic Cough, Unexplained Chronic Cough
Interventions
BCS+inactive, BCS+active
Behavioral · Combination Product
Lead sponsor
University of Montana
Other
Eligibility
18 Years to 99 Years
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
3
States / cities
Aurora, Colorado • Atlanta, Georgia • Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 19, 2026, 7:20 AM EDT
Recruiting Phase 3 Interventional

Idiopathic Pulmonary Fibrosis (IPF)-Related Chronic Cough Reduction With Nalbuphine Extended-Release (NAL ER) Tablets

NCT07671911
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis
Interventions
NAL ER, Placebo
Drug
Lead sponsor
Trevi Therapeutics
Industry
Eligibility
40 Years and older
Enrollment
306 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
22
States / cities
Newport Beach, California • Palm Springs, California • Redding, California + 19 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 19, 2026, 7:20 AM EDT
Terminated No phase listed Observational

COPD Exacerbation Blood and Urine Biomarkers Study

NCT03823443
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Acute Exacerbation Copd, Alpha-1 Anti-trypsin Deficiency
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
35 Years to 80 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 4, 2024 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Phase 2 Interventional Results available

A Clinical Trial to Evaluate the Safety and Efficacy in Subjects With Chronic Cough

NCT05392192
View directory record Official record
Conditions
Chronic Cough
Interventions
ADX-629, Placebo
Drug
Lead sponsor
Aldeyra Therapeutics, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
14
States / cities
San Diego, California • San Jose, California • Hollywood, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 28, 2025 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

An Exploratory Study of FP01 Lozenges in Subjects With Chronic Refractory Cough

NCT01703923
View directory record Official record
Conditions
Chronic Refractory Cough
Interventions
FP01, placebo
Drug
Lead sponsor
Avalo Therapeutics, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
8
States / cities
San Jose, California • Largo, Florida • Miami, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2014 · Synced Oct 19, 2026, 7:20 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cough Reflex Sensitivity and Bronchial Hyper-responsiveness

NCT01777867
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, Chronic Cough, Broncho-hyperreactivity
Interventions
Cough Reflex Sensitivity, Methacholine Challenge
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 17, 2017 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Placebo-controlled, Single and Multiple Dose Study in Healthy Volunteers and Refractory Chronic Cough Patients to Assess the Safety, Tolerability, and Pharmacokinetics of Two Formulations of NTX-1175

NCT05628740
View directory record Official record
Conditions
Refractory Chronic Cough
Interventions
3 mg NOC-100 (via nebulizer), 1 mg NOC-110 (via DPI) [1x 1 mg capsule], 3 mg NOC-110 (via DPI), Placebo (via DPI), 6 mg NOC-110 (via DPI), Placebo (via DPI) [2x Placebo capsules]
Drug
Lead sponsor
Nocion Therapeutics
Industry
Eligibility
18 Years to 85 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
3
States / cities
Phoenix, Arizona • Leesburg, Florida • Winter Park, Florida
Source: ClinicalTrials.gov public record
Updated Mar 30, 2023 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Gefapixant (MK-7264) in Women With Chronic Cough and Stress Urinary Incontinence (MK-7264-042)

NCT04193176
View directory record Official record
Conditions
Chronic Cough
Interventions
Gefapixant, Placebo
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older · Female only
Enrollment
376 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
19
States / cities
Paramount, California • Jupiter, Florida • Miami, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2024 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Phase 2 Interventional Results available

An 8-Week Refractory Chronic Cough Study (MK-7264-021)

NCT02612623
View directory record Official record
Conditions
Refractory Chronic Cough
Interventions
Gefapixant, Placebo (for gefapixant)
Drug
Lead sponsor
Afferent Pharmaceuticals, Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years to 80 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
10
States / cities
Mission Viejo, California • San Jose, California • Colorado Springs, Colorado + 7 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2019 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Not applicable Interventional

Improving Safety of Diagnosis and Therapy in the Inpatient Setting

NCT04393909
View directory record Official record
Conditions
Delirium, Confusion, Mental Status Change, Back Pain, Hip Pain Chronic, Chest Pain, Asthma, COPD, Cellulitis, Soft Tissue Infections, Cough, Deep Vein Thrombosis, Pulmonary Embolism, Venous Thromboembolism, Dyspnea, Electrolyte Metabolism Abnormal, Fever, Failure to Thrive, Weakness, Protein-Calorie Malnutrition, Headache, Neck Pain, Hypoxia, Pneumonia, Sepsis, Syncope, Vomiting, Diarrhea, Leg Pain, Abdominal Pain
Interventions
Diagnostic Uncertainty Educational Curriculum, Diagnostic Timeout, Patient Diagnostic (Dx) Questionnaire, Enhancements to Epic-integrated Quality & Safety Dashboard
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 26, 2022 · Synced Oct 19, 2026, 7:20 AM EDT
Completed No phase listed Observational

Impact of Gastroesophageal Reflux and Aspiration on Airway Inflammation and Microbiome in Children With Chronic Cough

NCT02797756
View directory record Official record
Conditions
Chronic Cough (CC), Gastroesophageal Reflux (GER)
Interventions
Esophago-gastro-duodenoscopy (EGD) with biopsy, Esophageal Impedance Monitoring (EIM)
Procedure
Lead sponsor
NYU Langone Health
Other
Eligibility
Up to 24 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 29, 2019 · Synced Oct 19, 2026, 7:20 AM 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 13, 2023 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Human Safety of Capsaicin Inhalation Challenge Testing for Young and Older Men

NCT01621685
View directory record Official record
Conditions
COPD
Interventions
biological/vaccine
Biological
Lead sponsor
University of South Florida
Other
Eligibility
19 Years to 92 Years · Male only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jun 18, 2012 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Early Phase 1 Interventional Results available

The Effects of Tiotropium on the Cough Reflex in Patients With Chronic Obstructive Pulmonary Disease (COPD)

NCT00870896
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Chronic Bronchitis
Interventions
Tiotropium
Drug
Lead sponsor
ThomasTruncale
Other
Eligibility
40 Years to 80 Years · Male only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
2
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 1, 2014 · Synced Oct 19, 2026, 7:20 AM EDT
Not yet recruiting Not applicable Interventional

Feasibility, Acceptability, and Safety Trial of Brief, Breath Control-Focused Acceptance and Commitment Therapy in Adults With Chronic Cough

NCT07566117
View directory record Official record
Conditions
Chronic Cough
Interventions
Acceptance and Commitment Therapy (ACT)
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 19, 2026, 7:20 AM EDT
Recruiting Phase 2 Interventional

Efficacy of Two Doses of Duloxetine and Amitriptyline in Subjects With Refractory Chronic Cough

NCT05110144
View directory record Official record
Conditions
Refractory Chronic Cough
Interventions
Duloxetine 30 MG, Duloxetine 60 MG, Amitriptyline 25 MG, Amitriptyline 50 MG, Placebo 30 MG, Placebo 60 MG
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Oct 19, 2026, 7:20 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Audio Data Collection for Identification and Classification of Coughing

NCT04326309
View directory record Official record
Conditions
COVID-19, Coronavirus Infections, Hay Fever, Asthma, Chronic Obstructive Pulmonary Disease, Influenza, Common Cold, Respiratory Tract Infections, Healthy
Interventions
Not listed
Lead sponsor
HealthMode Inc.
Industry
Eligibility
18 Years and older
Enrollment
336 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 29, 2022 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Phase 1 Interventional

Cough Desensitization Therapy: Pilot 2

NCT05226299
View directory record Official record
Conditions
Cough
Interventions
Supra-threshold and progressive doses of diluted capsaicin via a dosimeter-controlled nebulizer, Saline
Biological
Lead sponsor
University of Montana
Other
Eligibility
18 Years to 99 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Nov 3, 2022 · Synced Oct 19, 2026, 7:20 AM EDT
Terminated Phase 2 Interventional

Interferon-alpha Treatment of Chronic Cough in Chronic Obstructive Pulmonary Disease and Idiopathic Pulmonary Fibrosis

NCT00690885
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive, Pulmonary Fibrosis, Cough
Interventions
interferon-alpha lozenges, placebo lozenges
Drug
Lead sponsor
Ainos, Inc. (f/k/a Amarillo Biosciences Inc.
Industry
Eligibility
40 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Apr 24, 2012 · Synced Oct 19, 2026, 7:20 AM EDT
Completed No phase listed Observational Results available

Airway Limitation Study: Study In Primary Care Centers Of Chronic Bronchitis In Long-Term Cigarette Smokers Of At Least 40 Years Of Age With Symptoms Of Cough And Shortness Of Breath

NCT00442468
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Non-interventional study.
Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years and older
Enrollment
1,283 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
47
States / cities
Highlands Ranch, Colorado • Wheat Ridge, Colorado • Clearwater, Florida + 43 more
Source: ClinicalTrials.gov public record
Updated Jan 10, 2013 · Synced Oct 19, 2026, 7:20 AM EDT
Terminated Not applicable Interventional Results available

HFNC Effect on BCSS in Patients With COPD

NCT02825043
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
High-Flow Nasal Cannula
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
35 Years to 80 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jun 29, 2020 · Synced Oct 19, 2026, 7:20 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Gefapixant (MK-7264) in Adult Participants With Recent Onset Chronic Cough (MK-7264-043)

NCT04193202
View directory record Official record
Conditions
Chronic Cough
Interventions
Gefapixant, Placebo
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
419 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
15
States / cities
Phoenix, Arizona • Paramount, California • Springfield, Illinois + 12 more
Source: ClinicalTrials.gov public record
Updated May 16, 2023 · Synced Oct 19, 2026, 7:20 AM EDT
Active, not recruiting Not applicable Interventional

Cough, Expiratory Training, and Chronic Aspiration After Head and Neck Radiotherapy

NCT02662907
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
Barium Swallow, Questionnaires, Expiratory Muscle Strength Training (EMST) Device, Digital Manometer, Neurocognitive Exams, Barium
Procedure · Behavioral · Device + 1 more
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 19, 2026, 7:20 AM EDT
Terminated Phase 2 Interventional

A Phase 2b Study of Inhaled RVT-1601 for the Treatment of Persistent Cough in IPF

NCT03864328
View directory record Official record
Conditions
Persistent Cough in IPF, Chronic Cough, IPF
Interventions
RVT-1601, Placebo
Drug
Lead sponsor
Respivant Sciences GmbH
Industry
Eligibility
40 Years to 89 Years
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
28
States / cities
Birmingham, Alabama • Sacramento, California • San Francisco, California + 25 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2020 · Synced Oct 19, 2026, 7:20 AM EDT