The Effect of Nasal Carbon Dioxide (CO2) Used As-Needed in the Symptomatic Treatment of Seasonal Allergic Rhinitis
Public ClinicalTrials.gov record NCT00917020. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Randomized, Double-Blind, Placebo-Controlled, Multi-Center, Pilot Study to Evaluate the Efficacy and Safety of Nasal Carbon Dioxide Used As-Needed in the Symptomatic Treatment of Seasonal Allergic Rhinitis
Study identification
- NCT ID
- NCT00917020
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- Capnia, Inc.
- Industry
- Enrollment
- 32 participants
Conditions and interventions
Conditions
Interventions
- Nasal CO2 Drug
- Inactive Placebo Gas Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 65 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 30, 2009
- Primary completion
- Sep 30, 2009
- Completion
- Oct 31, 2009
- Last update posted
- Aug 14, 2012
2009
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Capnia Investigative Site | St Louis | Missouri | — | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00917020, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 14, 2012 · Synced Jul 22, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00917020 live on ClinicalTrials.gov.