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ClinicalTrials.gov public records Last synced May 21, 2026, 10:53 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Carbon Dioxide Clear all
Terminated Phase 2 Interventional
View directory record Official record
Conditions
Migraine
Interventions
Nasal Carbon Dioxide, Placebo
Drug
Lead sponsor
Capnia, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
3
States / cities
San Diego, California • Bethesda, Maryland • Portsmouth, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 30, 2013 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Scars, Striae
Interventions
Ultherapy® treatment only, Ultherapy® treatment and CO2 laser treatment, CO2 Laser treatment only
Device
Lead sponsor
Ulthera, Inc
Industry
Eligibility
21 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
2
States / cities
Paramus, New Jersey • Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 30, 2018 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Carbon Dioxide
Interventions
wearing a disposable surgical mask
Device
Lead sponsor
Patrick Brooks
Other
Eligibility
2 Years to 80 Years
Enrollment
119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Springfield, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 23, 2022 · Synced May 21, 2026, 10:53 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Abdominal Pain
Interventions
Endoscopic insufflation gas
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
6 Months to 18 Years
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced May 21, 2026, 10:53 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Hypoxia, Brain, Hyperoxia, Hypercapnia, Hypocapnia
Interventions
Carbon Dioxide
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced May 21, 2026, 10:53 PM EDT
Completed Phase 2 Interventional Results available
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 May 21, 2026, 10:53 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Wounds
Interventions
Placebo gel, GLYC-101 gel (1.0 %)
Drug
Lead sponsor
TR Therapeutics
Industry
Eligibility
25 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Beverly Hills, California
Source: ClinicalTrials.gov public record
Updated Oct 27, 2021 · Synced May 21, 2026, 10:53 PM EDT
Withdrawn Not applicable Interventional
View directory record Official record
Conditions
Cardiac Physiology, Cardiac Output
Interventions
NICO device
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 24, 2012 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Sleep Apnea, Obstructive, Sleep Apnea, Central
Interventions
Smart CO2
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced May 21, 2026, 10:53 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Lichen Planus Pigmentosus
Interventions
CO2 fractional laser
Device
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 1, 2022 · Synced May 21, 2026, 10:53 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Endoscopy
Interventions
Air, Carbon Dioxide
Other
Lead sponsor
University of Nebraska
Other
Eligibility
6 Months to 19 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 9, 2023 · Synced May 21, 2026, 10:53 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Child, Only, Brain Diseases, Sickle Cell Disease, Anemia, Sickle Cell
Interventions
Carbon Dioxide
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
4 Years to 21 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced May 21, 2026, 10:53 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Screening Colonoscopy
Interventions
colonoscopy
Procedure
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 80 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jan 31, 2016 · Synced May 21, 2026, 10:53 PM EDT
Terminated Not applicable Interventional Results available
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Venovenous CO2 Removal (VVCO2R) in COPD
Device
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 11, 2019 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Breast Carcinoma, Cancer Survivor, Cervical Carcinoma, Dyspareunia, Vaginal Dryness
Interventions
Laser Therapy, Questionnaire Administration
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
Female only
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 19, 2023 · Synced May 21, 2026, 10:53 PM EDT
Terminated Not applicable Interventional
View directory record Official record
Conditions
Acute Exacerbation of COPD
Interventions
Hemolung Respiratory Assist System, Invasive mechanical ventilation
Device
Lead sponsor
Alung Technologies
Industry
Eligibility
40 Years and older
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
32
States / cities
Sacramento, California • Denver, Colorado • Newark, Delaware + 28 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced May 21, 2026, 10:53 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Small Intestinal Bacterial Overgrowth Syndrome (SIBO), Small Bowel Bacterial Overgrowth Syndrome (SBBOS)
Interventions
Not listed
Lead sponsor
University of Florida
Other
Eligibility
Not listed
Enrollment
944 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 25, 2012 · Synced May 21, 2026, 10:53 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Neurosurgery
Interventions
Not listed
Lead sponsor
Swedish Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 23, 2017 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Abdominal Pain
Interventions
Air, Carbon dioxide
Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
8 Years to 21 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 12, 2019 · Synced May 21, 2026, 10:53 PM EDT
Completed Phase 2 Interventional
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 May 21, 2026, 10:53 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Sleep Apnea, Elderly Adults
Interventions
Hyperoxia/oxygen, Acetazolamide, Finasteride
Other · Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
60 Years to 89 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Burn Scar
Interventions
Laser phototherapy treatment
Procedure
Lead sponsor
University of California, Davis
Other
Eligibility
3 Years to 21 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jul 15, 2020 · Synced May 21, 2026, 10:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Photoaging, Wrinkle, Skin Laxity
Interventions
Fractional Ablative CO2 Laser, Facial Cleanser, Facial Moisturizer, Sunscreen, Basic Ointment
Procedure · Other
Lead sponsor
Revision Skincare
Industry
Eligibility
35 Years to 65 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Blue Ash, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 2, 2025 · Synced May 21, 2026, 10:53 PM EDT