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Showing 1–24 of 34 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Nasal Congestion Clear all
Terminated Not applicable Interventional

Oxymetazoline Hydrochloride in Combination With Nasal Glucocorticosteroid for Perennial Allergic and Non-allergic Rhinitis in Subjects With Persistent Nasal Congestion

NCT00584662
View directory record Official record
Conditions
Chronic Rhinitis
Interventions
Oxymetazoline Hydrochloride
Drug
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jun 27, 2012 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

"Anticipatory Guidance in the Nursery and Its Impact on Non-urgent Emergency Department Visits"

NCT01859065
View directory record Official record
Conditions
Health Knowledge, Attitudes, Practice, Sneezing, Constipation, Nasal Congestion and Inflammations
Interventions
Intensified anticipatory guidance, Routine
Behavioral
Lead sponsor
Bronx-Lebanon Hospital Center Health Care System
Other
Eligibility
Female only
Enrollment
323 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 20, 2013 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 3 Interventional

Placebo and Active Controlled Study to Assess Efficacy and Tolerability of Aspirin Plus Pseudoephedrine

NCT01062360
View directory record Official record
Conditions
Common Cold, Pharyngitis
Interventions
Acetylsalicylic Acid (Aspirin Complex, BAYE4465) + Pseudoephedrine, Acetylsalicylic Acid (Aspirin, BAYE4465), Pseudoephedrine, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,016 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 31, 2017 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 3 Interventional Results available

Study of Efficacy of Fevipiprant in Patients With Nasal Polyposis and Asthma

NCT03681093
View directory record Official record
Conditions
Nasal Polyps
Interventions
Fevipiprant 150 mg, Fevipiprant 450 mg, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Oct 10, 2021 · Synced Jul 21, 2026, 4:16 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 21, 2026, 4:16 PM EDT
Recruiting Phase 4 Interventional

Effect of Oxymetazoline Hydrochloride in Combination With Fluticasone Propionate on the Apnea Hypopnea Index (AHI) in Subject With Persistent Nasal Congestion and Mild Obstructive Sleep Apnea

NCT02630121
View directory record Official record
Conditions
Sleep Apnea, Chronic Nasal Congestion
Interventions
Oxymetazoline Hydrochloride, Placebo
Drug
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jan 23, 2025 · Synced Jul 21, 2026, 4:16 PM EDT
Not listed Phase 4 Interventional

Comparative Study of Sinol and Sinol-M in Patients With Congestion Due to Allergic Rhinitis

NCT00825656
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
Sinol or Sinol-M nasal spray
Drug
Lead sponsor
Strategic Biosciences
Industry
Eligibility
12 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Wheaton, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 22, 2009 · Synced Jul 21, 2026, 4:16 PM EDT
Terminated Not applicable Interventional

Sonu Real-World Use Clinical Study to Treat Moderate to Severe Nasal Congestion

NCT06024564
View directory record Official record
Conditions
Nasal Congestion
Interventions
Sonu Acoustic Resonance Therapy
Device
Lead sponsor
Third Wave Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 31, 2024 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A User Study of the Soniflow System for Nasal Congestion Relief

NCT04910139
View directory record Official record
Conditions
Nasal Congestion
Interventions
Soniflow System
Device
Lead sponsor
Third Wave Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 11, 2023 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 3 Interventional

Study to Find Out Whether Participants With a History of Stuffy Nose Due to Allergic Reactions in the Nose Would Intend to Buy Drug Phenylephrine Hydrochloride Extended Release Tablets After Receiving it Once in This Study

NCT04534452
View directory record Official record
Conditions
Nasal Congestion Due to Allergic Rhinitis
Interventions
Phenylephrine HCl (Sinus Comfort, BAY112476)
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 60 Years
Enrollment
347 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
Blue Bell, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 31, 2020 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Steady State Kinetics of l-Methamphetamine and Validation of Sensitivity of Dose Estimation

NCT00829634
View directory record Official record
Conditions
Nasal Congestion
Interventions
l-methamphetamine, d-methamphetamine
Drug
Lead sponsor
California Pacific Medical Center Research Institute
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 30, 2013 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 2 Interventional Results available

A Pivotal Study to Assess the Effectiveness of Nasal Dilator (Breathe Right Nasal Strips)

NCT03549130
View directory record Official record
Conditions
Congestion, Nasal
Interventions
Breathe Right Tan (small/medium) nasal strips, Placebo nasal strip
Device · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
2
States / cities
Indianapolis, Indiana • Paramus, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 24, 2018 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Intranasal Steroids and Oxymetazoline in Allergic Rhinitis

NCT00584987
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
Fluticasone furoate, Placebo Fluticasone furoate, Oxymetazoline, Placebo Oxymetazoline
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 55 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 16, 2013 · Synced Jul 21, 2026, 4:16 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Chlorpheniramine Maleate Nasal Spray for Chronic Rhinitis

NCT04790487
View directory record Official record
Conditions
Allergic Rhinitis, Nasal Congestion
Interventions
CPM, Placebo
Drug
Lead sponsor
Larkin Community Hospital
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
South Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 15, 2023 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 3 Interventional

Phase 3 Efficacy and Safety Study of Favipiravir for Treatment of Uncomplicated Influenza in Adults - T705US316

NCT02026349
View directory record Official record
Conditions
Influenza
Interventions
favipiravir, Placebo
Drug
Lead sponsor
MDVI, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
860 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
60
States / cities
Birmingham, Alabama • Hunstville, Alabama • Hot Springs, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 2 Interventional Results available

A Pivotal Subjective Sleep Study of a Nasal Dilator (Breathe Right Tan)

NCT03549117
View directory record Official record
Conditions
Congestion, Nasal
Interventions
Breathe Right Tan (small/medium) nasal strips, Placebo nasal strip
Device · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
2
States / cities
Verona, New Jersey • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 24, 2018 · Synced Jul 21, 2026, 4:16 PM EDT
Completed No phase listed Observational Results available

Home Usability of a Nasal Lavage System in Children

NCT01129765
View directory record Official record
Conditions
Nasal Congestion, Respiratory Tract Infection, Sinusitis, Allergic Rhinitis
Interventions
Use of an automatic nasal irrigator/aspirator
Device
Lead sponsor
Aardvark Medical Company
Industry
Eligibility
Up to 5 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Vienna, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 2, 2010 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Changes in Nasal Patency With Changes in Posture, Temperature, Humidity and Nasal Patency Seen by Acoustic Rhinometry

NCT00147888
View directory record Official record
Conditions
Mucosal Congestion
Interventions
Acoustic rhinometry (procedure)
Procedure
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 58 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 4, 2013 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 3 Interventional

Effect of Heated Humidity With Thermosmart™ Compared to an Intranasal Steroid in Improving Compliance and Nasal Symptoms in Patients Using Continuous Positive Airway Pressure

NCT00665977
View directory record Official record
Conditions
Obstructive Sleep Apnea, Nasal Congestion, Sinus Congestion
Interventions
Thermosmart & placebo, Placebo Device & Nasacort, Placebo Arm
Drug · Device
Lead sponsor
Clayton Sleep Insititute
Industry
Eligibility
16 Years to 65 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 6, 2010 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Effects of AkPharma's Calcium Glycerophosphate Nasal Spray Wash

NCT01647633
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
Calcium Glycerophosphate Nasal Spray Wash
Other
Lead sponsor
Drexel University
Other
Eligibility
18 Years to 80 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 24, 2015 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Not applicable Interventional Results available

The Safety and Efficacy of a SinuSonic Intervention

NCT03906968
View directory record Official record
Conditions
Nasal Congestion
Interventions
SinuSonic Device
Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 21, 2021 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 4 Interventional

To Determine if Diphenhydramine Works for Nasal Congestion at Two Different Doses

NCT00648973
View directory record Official record
Conditions
Nasal Congestion
Interventions
Diphenhydramine 50 mg, Diphenhydramine 25 mg, Pseudoephedrine 120 mg
Drug
Lead sponsor
Johnson & Johnson Consumer and Personal Products Worldwide
Industry
Eligibility
12 Years to 65 Years
Enrollment
1,021 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
12
States / cities
Austin, Texas • Dallas, Texas • Kerrville, Texas + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2011 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 2 Interventional Results available

A Study to Test a New Decongestant in Patients With Allergic Rhinitis Following a Nasal Allergen Challenge

NCT00562120
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
Placebo, Allegra, Allegra-D, PF-03654746
Drug
Lead sponsor
Pfizer
Industry
Eligibility
19 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 15, 2014 · Synced Jul 21, 2026, 4:16 PM EDT
Completed Phase 2 Interventional Results available

Market Potential of Carbon Dioxide Nasal Spray

NCT02113449
View directory record Official record
Conditions
Nasal Congestion
Interventions
Carbon Dioxide
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
4
States / cities
Chandler, Arizona • Pinellas Park, Florida • Paramus, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Jul 21, 2026, 4:16 PM EDT