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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
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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM EDT
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 Sep 14, 2026, 4:26 AM EDT
Terminated Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of IV Peramivir in Addition to Standard of Care Compared to Standard of Care Alone in Adults and Adolescents Who Are Hospitalized Due to Influenza

NCT00958776
View directory record Official record
Conditions
Cough, Sore Throat, Nasal Congestion, Headache, Fever, Seasonal Influenza
Interventions
Peramivir+SOC, Placebo+SOC
Drug
Lead sponsor
BioCryst Pharmaceuticals
Industry
Eligibility
12 Years and older
Enrollment
405 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
60
States / cities
La Mesa, California • Long Beach, California • Modesto, California + 49 more
Source: ClinicalTrials.gov public record
Updated Feb 11, 2015 · Synced Sep 14, 2026, 4:26 AM EDT
Completed Phase 3 Interventional

A Multicenter Study of Pseudoephedrine for the Temporary Relief of Nasal Congestion in Children With the Common Cold

NCT01744106
View directory record Official record
Conditions
Nasal Congestion Associated With the Common Cold
Interventions
pseudoephedrine hydrochloride 30 mg tablets, Placebo tablets
Drug
Lead sponsor
Perrigo Company
Industry
Eligibility
6 Years to 11 Years
Enrollment
565 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
11
States / cities
Anaheim, California • Costa Mesa, California • Boise, Idaho + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2016 · Synced Sep 14, 2026, 4:26 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Intranasal Capsaicin Treatment for Non-Allergic Irritant Rhinitis

NCT02493257
View directory record Official record
Conditions
Nonallergic Irritant Rhinitis
Interventions
Capsaicin, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 70 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 16, 2020 · Synced Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM EDT
Completed Phase 2 Interventional

The Effect of Nasal Carbon Dioxide (CO2) on Nasal Congestion in Subjects With Perennial Allergic Rhinitis

NCT00638755
View directory record Official record
Conditions
Perennial Allergic Rhinitis
Interventions
Nasal Carbon Dioxide
Drug
Lead sponsor
Capnia, Inc.
Industry
Eligibility
19 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 18, 2010 · Synced Sep 14, 2026, 4:26 AM EDT
Terminated Not applicable Interventional Results available

Effects of SinuSonic on Psychological and Physical Well-Being

NCT06268730
View directory record Official record
Conditions
Nasal Congestion and Inflammations, Sinus Congestion Chronic
Interventions
SinuSonic
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 99 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM EDT
Completed Not applicable Interventional

Safety and Effectiveness of Sonu for Pediatric Nasal Congestion

NCT06773013
View directory record Official record
Conditions
Nasal Congestion and Inflammations
Interventions
Acoustic Resonance (Sound) Therapy
Device
Lead sponsor
Third Wave Therapeutics
Industry
Eligibility
12 Years to 21 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Portola Valley, California
Source: ClinicalTrials.gov public record
Updated Sep 9, 2025 · Synced Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM EDT
Completed Not applicable Interventional Results available

Sonu Nasal Congestion Relief Study in Patients Suffering From Moderate to Severe Nasal Congestion

NCT05821842
View directory record Official record
Conditions
Nasal Congestion and Inflammations
Interventions
Sonu
Device
Lead sponsor
Third Wave Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 25, 2024 · Synced Sep 14, 2026, 4:26 AM EDT
Completed Phase 2 Interventional Results available

Exploratory Subjective Sleep Study of a Prototype Nasal Dilator

NCT01122849
View directory record Official record
Conditions
Sleep Disorders, Congestion, Nasal
Interventions
Prototype Nasal Dilator, Marketed Nasal Strip, Placebo Nasal Strip
Device
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
2
States / cities
Paramus, New Jersey • Bethlehem, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 8, 2018 · Synced Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM 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 Sep 14, 2026, 4:26 AM EDT