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Showing 1–24 of 233 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 1Phase 2 Interventional

Expiratory Muscle Training in Patients With Parkinson's Disease

NCT00843739
View directory record Official record
Conditions
Parkinson's Disease
Interventions
EMST - Active Treatment, sham EMST
Device
Lead sponsor
University of Florida
Other
Eligibility
35 Years to 85 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 19, 2011 · Synced Jul 20, 2026, 11:15 PM EDT
Terminated Phase 4 Interventional Results available

Acute Cough Study In Children

NCT01257542
View directory record Official record
Conditions
Common Cold, Infections, Upper Respiratory Tract
Interventions
Dextromethorphan, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
6 Years to 11 Years
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
4
States / cities
Pinellas Park, Florida • Indianapolis, Indiana • Gresham, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 19, 2012 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Benzonatate Dose Tolerance Study

NCT01690975
View directory record Official record
Conditions
Cough
Interventions
Placebo, Benzonatate - 400 mg, Benzonatate - 600 mg
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 23, 2012 · Synced Jul 20, 2026, 11:15 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Range of Neutrophil Response to 20,000 EU of Clinical Center Reference Endotoxin in Otherwise Healthy Smokers

NCT00753870
View directory record Official record
Conditions
Healthy Smokers
Interventions
CCRE inhalation
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 17, 2011 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study of the Safety, Immunogenicity and Lot Comparability of DAPTACEL When Administered With Other Recommended Vaccine

NCT00662870
View directory record Official record
Conditions
Diphtheria, Tetanus, Whooping Cough, Polio, Haemophilus Influenzae Type b
Interventions
DAPTACEL® (Diphtheria and Tetanus Toxoids and Acellular Pertussis vaccine), Pentacel: DTaP-IPV/Hib
Biological
Lead sponsor
Sanofi
Industry
Eligibility
42 Days to 84 Days
Enrollment
1,941 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2004
U.S. locations
26
States / cities
Fayetteville, AR 72703, Arkansas • Jonesboro, AR 72401, Arkansas • Little Rock, AR 72211, Arkansas + 23 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2012 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Not applicable Interventional Results available

A Comparison of Desflurane vs. Sevoflurane and the Time to Awakening and the Incidence and Severity of Cough

NCT01202162
View directory record Official record
Conditions
Surgery, Anesthesia
Interventions
Desflurane, Administration of Sevoflurane
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 65 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 24, 2013 · Synced Jul 20, 2026, 11:15 PM EDT
Terminated No phase listed Observational

Exhaled Breath Condensate pH in Patients With Cough Caused by Gastroesophageal Reflux

NCT00451841
View directory record Official record
Conditions
Cough, Gastroesophageal Reflux
Interventions
RTube Exhaled Breath Condensate Collection System
Device
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 25, 2018 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Respiratory Kinematics During Voluntary and Reflex Cough in Healthy Adults

NCT01854268
View directory record Official record
Conditions
Cough
Interventions
Healthy adults who receive capsaicin
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 8, 2022 · Synced Jul 20, 2026, 11:15 PM EDT
Active, not recruiting No phase listed Observational

Clinical Markers of Dysphagia in Cardiac Surgical Patients

NCT05304416
View directory record Official record
Conditions
Cardiovascular Diseases, Dysphagia
Interventions
Fiberoptic Endoscopic Evaluation of Swallowing, Simultaneous FEES and Videofluoroscopy instrumental swallowing exam, Videofluoroscopy instrumental swallowing exam (VFSS), Voluntary Cough Peak Expiratory Flow (PEF) Testing, Reflex Cough Screen, Lingual Pressure Testing, Speech Testing
Diagnostic Test · Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 90 Years
Enrollment
347 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
2
States / cities
Gainesville, Florida • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 13, 2025 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

A Study to Evaluate the Effectiveness of the Induced Reflex Cough Test Plus Urodynamics to Identify Stress Urinary Incontinence in Female Subjects With a History of Stress Urinary Incontinence

NCT00801203
View directory record Official record
Conditions
Stress Urinary Incontinence
Interventions
IRCT
Drug
Lead sponsor
Pneumoflex Systems, LLC
Industry
Eligibility
25 Years and older · Female only
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
10
States / cities
Cape Coral, Florida • Melbourne, Florida • Orlando, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated May 8, 2012 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 1 Interventional

Effect of Honey and Dextromethorphan on Nocturnal Cough and Sleep

NCT00127686
View directory record Official record
Conditions
Cough, Respiratory Tract Infections
Interventions
Dextromethorphan, Buckwheat Honey
Drug
Lead sponsor
Penn State University
Other
Eligibility
2 Years to 18 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 23, 2017 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity in Adults of Revaccination With Adacel® Vaccine 10 Years After a Previous Dose

NCT01439165
View directory record Official record
Conditions
Tetanus, Diphtheria, Pertussis, Whooping Cough
Interventions
Tetanus Toxoid, Diphtheria Toxoid and Pertussis Vaccine, Tetanus and Diphtheria Toxoids Adsorbed For Adult Use
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years to 64 Years
Enrollment
1,330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
31
States / cities
Huntsville, Alabama • Jonesboro, Arkansas • Little Rock, Arkansas + 28 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2022 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Respiratory Kinematics of Cough in Healthy Older Adults and Parkinson's Disease

NCT02183519
View directory record Official record
Conditions
Cough, Parkinson's Disease
Interventions
Capsaicin, Voluntary cough test
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
55 Years to 85 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
2
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 23, 2017 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Increasing Vaccine Uptake Among Veterans at the Atlanta VA Health Care System

NCT03950986
View directory record Official record
Conditions
Influenza, Tetanus, Diphtheria, Pertussis, Pneumonia
Interventions
Modified clinical reminders
Other
Lead sponsor
Atlanta VA Medical Center
Federal
Eligibility
Not listed
Enrollment
67,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 9, 2020 · Synced Jul 20, 2026, 11:15 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Usefulness and Feasibility of Ultrasound in Office Laryngology Procedures

NCT06579989
View directory record Official record
Conditions
Cough, Vocal Cord Atrophy, Vocal Cord Paresis, Vocal Cord Paralysis, Dysphagia, Dysphonia
Interventions
Ultrasound for cough, Ultrasound for vocal fold atrophy or vocal fold paresis/paralysis, Ultrasound for dysphagia, Ultrasound for dysphonia
Diagnostic Test
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 99 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2030
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Jul 20, 2026, 11:15 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Investigating Health Impacts of Exposure to Harmful Algal Blooms

NCT06883227
View directory record Official record
Conditions
Red Tide, Neurologic Disorder, Florida
Interventions
Not listed
Lead sponsor
Roskamp Institute Inc.
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2030
U.S. locations
1
States / cities
Sarasota, Florida
Source: ClinicalTrials.gov public record
Updated Mar 23, 2025 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 1 Interventional

Alleviation of Common Cold Symptoms

NCT06106880
View directory record Official record
Conditions
Common Cold, Pharyngitis, Fever, Congestion, Rhinorrhea, Cough, Sore-throat, Sore Throats Viral, Malaise, Headache, Runny Nose, Sneezing
Interventions
Wintergreen Throat Spray and Aspirin Tablet, Aspirin Throat Spray and Placebo Tablet, Wintergreen Throat Spray and Placebo Tablet, Placebo Throat Spray and Placebo Tablet
Drug · Dietary Supplement · Other
Lead sponsor
Applied Biological Laboratories Inc
Other
Eligibility
18 Years to 65 Years
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
6
States / cities
Irvine, California • Washington D.C., District of Columbia • Atlanta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2024 · Synced Jul 20, 2026, 11:15 PM EDT
Completed No phase listed Observational

Is the Cough Stress Test Equivalent to the 24 Hour Pad Test in the Assessment of Stress Incontinence?

NCT01123096
View directory record Official record
Conditions
Stress Urinary Incontinence
Interventions
Cough Stress Test, 24 Hour Pad Test
Procedure · Other
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2013 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Electronic Cigarette Use on Cough Reflex Sensitivity

NCT02203162
View directory record Official record
Conditions
Cough
Interventions
electronic cigarette exposure
Device
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Jul 20, 2026, 11:15 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of the AudibleHealth Dx AI/ML-Based Dx SaMD Using FCV-SDS in the Diagnosis of COVID-19 Illness: Clinical Validation

NCT05364268
View directory record Official record
Conditions
2019 Novel Coronavirus Disease, 2019 Novel Coronavirus Infection, 2019-nCoV Disease, COVID-19 Pandemic, COVID-19 Virus Disease, COVID-19 Virus Infection, Coronavirus Disease 2019, Coronavirus Disease-19, SARS-CoV-2 Infection
Interventions
Diagnostic Test: Diagnostic Software as Medical Device
Device
Lead sponsor
AudibleHealth AI, Inc.
Industry
Eligibility
18 Years to 100 Years
Enrollment
514 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Sunrise, Florida
Source: ClinicalTrials.gov public record
Updated Jul 19, 2022 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Not applicable Interventional Results available

Sham CPAP vs. Straight CPAP for Chronic Cough

NCT03172130
View directory record Official record
Conditions
Chronic Cough, OSA
Interventions
Straight CPAP, Sham CPAP
Device
Lead sponsor
Krishna M. Sundar
Other
Eligibility
18 Years to 80 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 17, 2020 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of DTap-IPV Compared to DAPTACEL® and IPOL® as the 5th Dose in Children 4 to 6 Years of Age

NCT01346293
View directory record Official record
Conditions
Tetanus, Diphtheria, Pertussis, Measles, Polio
Interventions
Diphtheria and Tetanus Toxoids and Acellular Pertussis + Measles, Mumps, Rubella + Varicella Virus, Diphtheria and Tetanus Toxoids and Acellular Pertussis + Poliovirus + MMR + Varicella Virus
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
4 Years to 6 Years
Enrollment
3,372 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
71
States / cities
Birmingham, Alabama • Pinson, Alabama • Trussville, Alabama + 60 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2015 · Synced Jul 20, 2026, 11:15 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Pentavalent DTaP-Hep B-IPV

NCT00133445
View directory record Official record
Conditions
Diphtheria, Hepatitis B, Poliomyelitis, Pertussis, Tetanus
Interventions
DTaP-Hep B-IPV Vaccine, Monovalent Hep B Vaccine, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Up to 5 Days
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Nov 6, 2011 · Synced Jul 20, 2026, 11:15 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

The Safety of Boostrix Following Routine Immunization of Pregnant Women

NCT03463577
View directory record Official record
Conditions
Whooping Cough
Interventions
Safety assessment following routine immunization with Boostrix
Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
Female only
Enrollment
65,783 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Pasadena, California
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Jul 20, 2026, 11:15 PM EDT