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ClinicalTrials.gov public records Last synced May 22, 2026, 5:38 AM EDT

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

Showing 1–24 of 52 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Effects of High Altitude Clear all
Completed Phase 3 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Acute Mountain Sickness (AMS)
Interventions
T89 capsule, Placebo capsule
Drug
Lead sponsor
Tasly Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
853 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 12, 2024 · Synced May 22, 2026, 5:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Altitude, Hypoxia, Environmental Sleep Disorder
Interventions
altitude exposure in hypobaric chamber
Procedure
Lead sponsor
Oklahoma State University Center for Health Sciences
Other
Eligibility
30 Years to 60 Years · Male only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 23, 2015 · Synced May 22, 2026, 5:38 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
High Altitude Pulmonary Edema
Interventions
Acetazolamide, Placebo
Drug
Lead sponsor
Vincent Kan
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 9, 2019 · Synced May 22, 2026, 5:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Glucose Metabolism, High Altitude
Interventions
Sea Level, High Altitude
Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 39 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 1, 2021 · Synced May 22, 2026, 5:38 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Hypobaric Hypoxia
Interventions
Acetazolamide, Erythropoietin
Drug
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 40 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced May 22, 2026, 5:38 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Acute Mountain Sickness
Interventions
ambrisentan and theophylline, placebo
Drug
Lead sponsor
University of Montana
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Feb 25, 2016 · Synced May 22, 2026, 5:38 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Acute Mountain Sickness
Interventions
Budesonide, Acetazolamide, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Bishop, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced May 22, 2026, 5:38 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Hypoxemia, Altitude Hypoxia
Interventions
Continuous positive airway pressure, Ambient air
Device
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 1, 2023 · Synced May 22, 2026, 5:38 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Acute Mountain Sickness
Interventions
Erythropoietin, Iron sucrose (Venofer), Sterile Sodium Chloride
Drug
Lead sponsor
University of Oregon
Other
Eligibility
18 Years to 40 Years
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Leadville, Colorado • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 9, 2023 · Synced May 22, 2026, 5:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Hypoxia, Altitude, Exercise
Interventions
Hypoxia, Exercise
Other
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced May 22, 2026, 5:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
High Altitude Pulmonary Hypertension
Interventions
Aminophylline, Ambrisentan, Aminophylline plus ambrisentan
Drug
Lead sponsor
Thies Schroeder
Other
Eligibility
18 Years to 40 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 15, 2014 · Synced May 22, 2026, 5:38 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Effects of High Altitude, Hypoxia, Inadequate or Impaired Breathing Pattern or Ventilation, Abnormal Blood Oxygen Pressure
Interventions
NAC, Placebo
Drug
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 39 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 29, 2020 · Synced May 22, 2026, 5:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Decompression Sickness, Acute Mountain Sickness
Interventions
Pressure, Breathing Gas
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 40 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 13, 2021 · Synced May 22, 2026, 5:38 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Hypoxia, Altitude
Interventions
Cetirizine, Placebo oral capsule, Hypoxia
Drug · Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 35 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 15, 2020 · Synced May 22, 2026, 5:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Intermittent Hypoxia
Interventions
Melatonin, Placebo
Other
Lead sponsor
Robert L. Owens
Other
Eligibility
18 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 13, 2019 · Synced May 22, 2026, 5:38 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Insulin Resistance
Interventions
Hypoxia Exposure
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
20 Years to 45 Years · Male only
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced May 22, 2026, 5:38 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Altitude Hypoxia, Ventilation, Sleep, Oxidative Stress, Neurocognitive Dysfunction
Interventions
Melatonin, Hypoxia
Dietary Supplement · Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 30, 2019 · Synced May 22, 2026, 5:38 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Altitude Sickness
Interventions
Ibuprofen, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 12, 2018 · Synced May 22, 2026, 5:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Weight Loss, Other Effects of High Altitude
Interventions
Standard pro, High pro, carbo bev, placebo bev
Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 42 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 5, 2017 · Synced May 22, 2026, 5:38 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Probiotics
Interventions
SLAB51
Dietary Supplement
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
2
States / cities
Bishop, California • La Jolla, California
Source: ClinicalTrials.gov public record
Updated Aug 13, 2024 · Synced May 22, 2026, 5:38 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Hypoxia
Interventions
Injectafer, Placebo
Drug · Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 29, 2025 · Synced May 22, 2026, 5:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Altitude Hypoxia
Interventions
Hypoxic breathing conditions
Other
Lead sponsor
University of Texas, El Paso
Other
Eligibility
18 Years to 40 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced May 22, 2026, 5:38 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Acute Mountain Sickness (AMS)
Interventions
T89 capsule, Placebo capsule
Drug
Lead sponsor
Tasly Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 12, 2019 · Synced May 22, 2026, 5:38 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Hypoxic Pulmonary Vasoconstriction
Interventions
iloprost
Drug
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Sep 17, 2015 · Synced May 22, 2026, 5:38 AM EDT