Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.

ClinicalTrials.gov official registry

Seasonal Allergic Rhinitis clinical trials

Every US clinical trial registered for Seasonal Allergic Rhinitis — phase mix, recruiting status, and the sponsors running them, straight from the NIH ClinicalTrials.gov registry.

17 US clinical trials ·

The research picture

Seasonal Allergic Rhinitis has 17 registered US clinical trials; none are currently listed as recruiting, so most are completed or in follow-up.

0
recruiting participants now
0%
of trials open to enrollment
12
in Phase 3–4 (later-stage)
3
top sponsor: Alcon Research

Counts reflect the public ClinicalTrials.gov registry as last mirrored by PlainTrial. Status and phase are reported by each study's sponsor. This is reference information, not medical advice.

Active & Recent Trials

COMPLETED Phase 3 2,388 participants

Safety and Efficacy of Olopatadine HCl Nasal Spray in 6-11 Year Old Patients

Alcon Research

NCT00578929

COMPLETED Phase 3 1,180 participants

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

Glenmark Specialty S.A.

NCT02631551

COMPLETED Phase 4 1,010 participants

Single-Center, Double-Blind, Randomized , Parallel Study Comparing Onset of Action, Efficacy & Safety of a Single-Dose of Fexofenadine HCl 180 mg vs Montelukast Na 10 mg & Placebo in Treating Seasonal Allergic Rhinitis Subjects in an Allergen Exposure Unit

Sanofi

NCT00637611

COMPLETED Phase 3 847 participants

A Safety and Efficacy Study of Ciclesonide Nasal Aerosol in Subjects 6-11 Years With Seasonal Allergic Rhinitis (SAR)

Sumitomo Pharma America

NCT01458275

COMPLETED Phase 3 776 participants

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

Meda Pharmaceuticals

NCT00740792

COMPLETED Phase 3 715 participants

Study of an Investigational Nasal Aerosol or Placebo Nasal Aerosol in Children (Ages 6-11) With Seasonal Allergies

Teva Branded Pharmaceutical Products R&D

NCT01307319

COMPLETED Phase 3 660 participants

Safety and Efficacy of Ciclesonide in Pediatric Patients (6 to 11 Years of Age) With Seasonal Allergic Rhinitis (BY9010/M1-417)

AstraZeneca

NCT00305487

COMPLETED Phase 2 601 participants

Safety and Efficacy of Bepotastine Besilate Nasal Spray in the Treatment of Seasonal Allergic Rhinitis

Bausch & Lomb Incorporated

NCT01277341

COMPLETED Phase 4 596 participants

A Study Evaluating the Efficacy and Impact on Health-related Quality of Life of Levocetirizine in Adults With Seasonal Allergic Rhinitis

UCB Pharma

NCT00621959

COMPLETED Phase 4 580 participants

A Study Evaluating the Efficacy and Impact on Health-related Quality of Life of Levocetirizine in Adults With Seasonal Allergic Rhinitis

UCB Pharma

NCT00653224

COMPLETED Phase 2 579 participants

Study of ACT-129968 in Adult Patients With Seasonal Allergic Rhinitis

Idorsia Pharmaceuticals

NCT01241214

COMPLETED Phase 2 265 participants

Dose Selection Study of Efficacy and Safety of Different Doses of Grass MATA MPL and Grass MATA Using mEECs™

Allergy Therapeutics

NCT02582073

COMPLETED Phase 4 150 participants

Comparison of Seasonal Allergic Rhinitis Treatment With 2 Antihistamines Used in Combination With Intranasal Corticosteroid

Alcon Research

NCT00845195

COMPLETED Phase 4 130 participants

Comparison of Olopatadine 0.6% and Fluticasone Proprionate 50mcg Nasal Sprays in a Two Week Seasonal Allergic Rhinitis Trial

Alcon Research

NCT00691665

COMPLETED Phase 2 100 participants

Clinical Trial of STAHIST in Seasonal Allergic Rhinitis (SAR) Subjects

Magna Pharmaceuticals

NCT01171664

COMPLETED 92 participants

Biomarkers in Nasal Samples of Seasonal Allergic Rhinitics

University of North Carolina, Chapel Hill

NCT04670627

COMPLETED Phase 4 20 participants

Intranasal Steroids and the Nasal Ocular Response

University of Chicago

NCT00473915

Phase Distribution

PhaseTrial count
Phase 2 4
Phase 3 6
Phase 4 6

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

Reading the Seasonal Allergic Rhinitis Trial Landscape

ClinicalTrials.gov lists 17 US studies indexed under Seasonal Allergic Rhinitis, and 0 of those are currently open to recruitment — roughly 0% of the total volume on the registry. That ratio is a useful proxy for activity level: a high share of recruiting studies often signals that research interest is current and that new enrollment opportunities are appearing, while a low share typically means the field is dominated by completed or follow-up work where most participant spots have already been filled. These counts reflect the public registry only and include studies at every stage of design, so they should be read as an index of research attention rather than as a measure of treatment availability.

The phase distribution for Seasonal Allergic Rhinitis shows 12 late-stage studies (Phase 3 and Phase 4 combined) alongside 4 earlier-phase entries (Phase 1 through Phase 2). Phase 1 and Phase 2 studies focus on early safety signals, dosing, and preliminary effect, while Phase 3 studies are typically the larger efficacy and safety trials submitted toward regulatory review, and Phase 4 studies follow approved interventions in real-world use. A condition weighted toward later phases often reflects a mature research pipeline with several interventions already close to or past approval, whereas a heavier early-phase tilt suggests the field is still exploring new mechanisms and candidate approaches.

Top sponsor activity for Seasonal Allergic Rhinitis is led by Alcon Research with 3 indexed trials, alongside 9 other organizations in the top contributor list. The list on this page surfaces up to 17 of the most relevant recent and active entries, ordered with recruiting studies first so practical options are visible. All figures are derived from the public ClinicalTrials.gov dataset maintained by the National Library of Medicine and are reproduced here for reference. Inclusion of a trial, sponsor, or intervention on this page is neither an endorsement nor a recommendation — eligibility, protocol changes, and site-level status can shift frequently, so always verify current details on ClinicalTrials.gov and consult a qualified healthcare provider before acting on anything you see here.

Frequently Asked Questions

How many clinical trials are there for Seasonal Allergic Rhinitis?

PlainTrial tracks 17 US clinical trials for Seasonal Allergic Rhinitis, of which 0 are currently recruiting participants. Data sourced from ClinicalTrials.gov.

How do I find a recruiting trial for Seasonal Allergic Rhinitis?

Use the trial list above filtered by "Recruiting" status, or visit our trial finder at /recruiting to search by condition and state. Always discuss trial participation with your healthcare provider before enrolling.

Is this data current?

Data is sourced from ClinicalTrials.gov and reflects our most recent data pull. Trial status may have changed since then. Always verify current information at ClinicalTrials.gov before making decisions about participation.

Related

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from ClinicalTrials.gov (National Library of Medicine). Consult a qualified professional before making decisions based on this data.

Source: ClinicalTrials.gov (NIH/NLM) ClinicalTrials.gov AACT registry · 2026 Trial counts and statuses sourced from ClinicalTrials.gov. Sponsor counts include both industry and federal/academic sponsors.

Verify with NIH →