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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Allergy Pollen Clear all
Completed No phase listed Observational

Pilot Study of Allergy Immunotherapy and Prevention of Viral Respiratory Infections

NCT00405899
View directory record Official record
Conditions
Allergy, Seasonal Allergic Rhinitis, Perennial Allergic Rhinitis
Interventions
Not listed
Lead sponsor
West Penn Allegheny Health System
Other
Eligibility
6 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 30, 2010 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Fixed Dose Combination GSP 301 Nasal Spray (NS) in the Treatment of Seasonal Allergic Rhinitis (SAR)

NCT02631551
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
GSP 301 NS, Olopatadine HCl NS, Mometasone furoate NS, GSP 301 Placebo NS
Drug
Lead sponsor
Glenmark Specialty S.A.
Industry
Eligibility
12 Years and older
Enrollment
1,180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
37
States / cities
Mission Viejo, California • San Diego, California • San Jose, California + 28 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2018 · Synced Sep 16, 2026, 2:32 PM EDT
Terminated Phase 3 Interventional Results available

Clinical Equivalence Study of Fluticasone Propionate Nasal Spray, 50 mcg/Actuation vs. Flonase in Allergic Rhinitis Patients

NCT02246920
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
Fluticasone propionate, Flonase®, Placebo
Drug
Lead sponsor
Teva Pharmaceuticals USA
Industry
Eligibility
12 Years and older
Enrollment
1,474 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 7, 2023 · Synced Sep 16, 2026, 2:32 PM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety and Efficacy Study of rEV131 in Allergic Rhinitis

NCT00247520
View directory record Official record
Conditions
Hay Fever
Interventions
topical nasal rEV131
Drug
Lead sponsor
Evolutec Group
Industry
Eligibility
18 Years to 80 Years
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
2
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Nov 1, 2005 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional

To Assess the Safety of Ciclesonide, Applied as a Nasal Spray at Three Dose Levels, in the Treatment of Perennial Allergic Rhinitis in Pediatrics (BY9010/M1-405)

NCT00658918
View directory record Official record
Conditions
Rhinitis, Allergic, Perennial, Hay Fever
Interventions
Ciclesonide nasal, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
2 Years to 5 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Dec 1, 2016 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 2 Interventional

The Effect of Nasal Carbon Dioxide (CO2) Used As-Needed in the Symptomatic Treatment of Seasonal Allergic Rhinitis

NCT00917020
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
Nasal CO2, Inactive Placebo Gas
Drug
Lead sponsor
Capnia, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 14, 2012 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 2Phase 3 Interventional Results available

An Exploratory Study of PQ Grass 27600 SU

NCT04687059
View directory record Official record
Conditions
Rhinitis, Allergic, Seasonal
Interventions
PQ Grass, Active Placebo, Standard Placebo
Biological · Drug
Lead sponsor
Allergy Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
8
States / cities
Lexington, Kentucky • White Marsh, Maryland • Ocean Township, New Jersey + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 4 Interventional Results available

Allergic Rhinitis Changes the Sinus Microbiome

NCT01852513
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
QNASL, Placebo nasal spray
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 55 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Sep 16, 2026, 2:32 PM EDT
Terminated Phase 2 Interventional

Efficacy and Safety Study of TOLAMBA™ in Ragweed-Allergic Adults

NCT00387738
View directory record Official record
Conditions
Rhinitis, Allergic, Seasonal
Interventions
Amb a 1 immunostimulatory oligodeoxyribonucleotide conjugate, Histamine base
Biological
Lead sponsor
Dynavax Technologies Corporation
Industry
Eligibility
18 Years to 55 Years
Enrollment
738 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
28
States / cities
Oxford, Alabama • Stockbridge, Georgia • Normal, Illinois + 22 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2019 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety, Tolerability and Pharmacokinetics of Multiple Doses of VAK694 in Atopic Subjects With Seasonal Rhinitis

NCT00929968
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
Placebo, VAK694, Fluticasone
Biological · Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 60 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2009
U.S. locations
1
States / cities
Duncansville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 18, 2020 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional

Efficacy, Safety, and Tolerability Study of ACT-129968 in Patients With Seasonal Allergic Rhinitis

NCT01484119
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
ACT-129968, Placebo, Cetirizine
Drug
Lead sponsor
Idorsia Pharmaceuticals Ltd.
Industry
Eligibility
12 Years to 76 Years
Enrollment
630 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
7
States / cities
Austin, Texas • Kerrville, Texas • New Braunfels, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2018 · Synced Sep 16, 2026, 2:32 PM EDT
Completed No phase listed Observational

Examining the Link Between Depression and Seasonal Allergies

NCT00770068
View directory record Official record
Conditions
Depression
Interventions
Not listed
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2017
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 20, 2019 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 2 Interventional Results available

Texan Allergy & Sinus Center Mountain Cedar Intra-Lymphatic Immunotherapy Study

NCT03682965
View directory record Official record
Conditions
Allergic Rhinitis Due to Tree Pollen, Allergic Conjunctivitis, Allergic Rhinoconjunctivitis
Interventions
Intra-lymphatic allergenic extract, Intra-lymphatic placebo
Biological
Lead sponsor
Christopher Thompson, MD
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
3
States / cities
Austin, Texas • Grapevine, Texas • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Apr 19, 2021 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional

A Study to Evaluate the Safety and Efficacy of a Nasal Spray to Treat Seasonal Allergies

NCT01368445
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
azelastine hydrochloride 0.15% Nasal Spray, azelastine hydrochloride 0.15% and Placebo, Azelastine 0.1%, Nasal Spray
Drug
Lead sponsor
Meda Pharmaceuticals
Industry
Eligibility
12 Years and older
Enrollment
617 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
30
States / cities
Fountain Valley, California • Long Beach, California • Los Angeles, California + 26 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2011 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Safety & Effectiveness of a Nasal Spray to Treat Seasonal Allergies

NCT00719862
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
Placebo nasal spray, 0.15% azelastine hydrochloride Nasal Spray
Drug
Lead sponsor
Meda Pharmaceuticals
Industry
Eligibility
12 Years and older · Female only
Enrollment
481 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
34
States / cities
Huntington Beach, California • Long Beach, California • San Diego, California + 30 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2010 · Synced Sep 16, 2026, 2:32 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Desensitization and Cross-Desensitization During Oral Grass or Ragweed Pollen Immunotherapy

NCT02676765
View directory record Official record
Conditions
Immunologic Desensitization
Interventions
allergen extract tablet, Placebo tablet
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 17, 2022 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy Trial of Dymista Nasal Spray in Children Ages 4 to 11 With Seasonal Allergic Rhinitis (SAR)

NCT01915823
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
azelastine hydrochloride and fluticasone propionate, Dymista vehicle
Drug
Lead sponsor
Meda Pharmaceuticals
Industry
Eligibility
4 Years to 11 Years
Enrollment
348 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
31
States / cities
Birmingham, Alabama • Little Rock, Alaska • Atlanta, Georgia + 24 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2015 · Synced Sep 16, 2026, 2:32 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Efficacy and Safety of Grass-SPIRE Registration Study

NCT02795273
View directory record Official record
Conditions
Rhinitis, Conjunctivitis
Interventions
Grass-SPIRE, Placebo
Drug
Lead sponsor
Circassia Limited
Industry
Eligibility
12 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2016
U.S. locations
2
States / cities
Canton, Ohio • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 22, 2016 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional

A Study to Demonstrate the Effect of REGN5713-5715 on Reducing Ocular Allergy Signs and Symptoms in Adult Participants With Birch Pollen Allergy

NCT06602739
View directory record Official record
Conditions
Allergic Conjunctivitis
Interventions
REGN5713, REGN5715, Placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Andover, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Study to Assess the Safety, Tolerability, and Preliminary Efficacy of B244 in Healthy Volunteers and Subjects With Seasonal Allergic Rhinitis

NCT03290248
View directory record Official record
Conditions
Allergic Rhinitis, Allergic Rhinitis Due to Grass Pollen, Healthy Volunteers
Interventions
B244 suspension, Vehicle
Biological
Lead sponsor
AOBiome LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Tustin, California
Source: ClinicalTrials.gov public record
Updated Nov 24, 2022 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Safety and Effectiveness of a Nasal Spray to Treat Seasonal Allergies

NCT00651118
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
Placebo, azelastine Hcl, azelastineHcl / fluticasone propionate, fluticasone propionate
Drug
Lead sponsor
Meda Pharmaceuticals
Industry
Eligibility
12 Years and older
Enrollment
832 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
43
States / cities
Scottsdale, Arizona • Encinitas, California • Los Angeles, California + 38 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2012 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional Results available

A Study Comparing the Clinical Equivalence of Two Mometasone Nasal Sprays in the Relief of the Signs and Symptoms of Seasonal Allergic Rhinitis

NCT01038427
View directory record Official record
Conditions
Rhinitis, Allergic, Seasonal
Interventions
Mometasone furoate 50 mcg/actuation nasal spray (Lek Pharmaceuticals), Mometasone furoate (Nasonex®) 50 mcg/actuation nasal spray, Placebo
Drug
Lead sponsor
Sandoz
Industry
Eligibility
12 Years and older
Enrollment
795 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
8
States / cities
Austin, Texas • Kerrville, Texas • Live Oak, Texas + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2021 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Safety and Effectiveness of a Nasal Spray to Treat Seasonal Allergies

NCT00883168
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
Placebo, azelastineHcl, fluticasone propionate, azelastine Hcl/fluticasone propionate
Drug
Lead sponsor
Meda Pharmaceuticals
Industry
Eligibility
12 Years and older
Enrollment
1,791 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
45
States / cities
Scottsdale, Arizona • Encinitas, California • Fountain Valley, California + 35 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2013 · Synced Sep 16, 2026, 2:32 PM EDT
Completed Early Phase 1 Interventional Results available

Study of a Topical Nasal Spray to Ease the Symptoms of Hayfever

NCT01500629
View directory record Official record
Conditions
Rhinitis, Allergic, Seasonal
Interventions
C-1266-7, C-1266-6 (placebo)
Device
Lead sponsor
McNeil Consumer Healthcare Division of McNEIL-PPC, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 26, 2017 · Synced Sep 16, 2026, 2:32 PM EDT