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ClinicalTrials.gov public records Last synced Nov 15, 2026, 7:17 AM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Showing 193–216 of 319 matching trials from the live ClinicalTrials.gov search.

Filters: Condition: Respiratory Illness Clear all

Conditions: Mountain Sickness Acute
Interventions: Respiratory Muscle Training, Sham Breathing Training; Device
Lead sponsor: University of Colorado, Denver; Other
Eligibility: 18 Years to 45 Years · Male only
Enrollment: 28 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2018 – 2020
U.S. locations: 1
States / cities: Aurora, Colorado

Conditions: Acute Mountain Sickness
Interventions: Prochlorperazine Maleate, Placebo; Drug
Lead sponsor: University of Colorado, Denver; Other
Eligibility: 18 Years to 75 Years
Enrollment: 57 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2024
U.S. locations: 1
States / cities: Evergreen, Colorado

Conditions: Critically Illness, Sedation, Invasive Mechanical Ventilation, Acute Respiratory Distress Syndrome
Interventions: Intravenous sedation, Inhaled sedation; Drug
Lead sponsor: University Hospital, Clermont-Ferrand; Other
Eligibility: 18 Years and older
Enrollment: 203 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2021
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Upper Respiratory Tract Infection, Lower Respiratory Tract Infection
Interventions: RI-001; Biological
Lead sponsor: ADMA Biologics, Inc.; Industry
Eligibility: 2 Years to 65 Years
Enrollment: 21 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008 – 2010
U.S. locations: 15
States / cities: San Francisco, California • Aurora, Colorado • Washington D.C., District of Columbia + 11 more

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

Conditions: Common Cold, Healthy
Interventions: 3804-250A; Drug
Lead sponsor: The Dial Corporation; Industry
Eligibility: 18 Years to 40 Years
Enrollment: 212 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2009
U.S. locations: 1
States / cities: Charlottesville, Virginia

Conditions: Influenza, Acute Respiratory Infection, Influenza-like Illness
Interventions: Educational text messages; Behavioral
Lead sponsor: Columbia University; Other
Eligibility: Not listed
Enrollment: 1,918 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2017 – 2021
U.S. locations: 1
States / cities: New York, New York

Conditions: Influenza, Influenza-like Illness
Interventions: Not listed
Lead sponsor: Henry M. Jackson Foundation for the Advancement of Military Medicine; Other
Eligibility: 18 Years and older
Enrollment: 535 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2014 – 2015
U.S. locations: 5
States / cities: San Diego, California • Bethesda, Maryland • San Antonio, Texas + 2 more

Conditions: Resting Metabolic Rate, Appetite, Heart Rate Variability
Interventions: Normobaric Hypoxia, Normobaric Normoxia; Device
Lead sponsor: Florida State University; Other
Eligibility: 20 Years to 45 Years
Enrollment: 20 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2019 – 2021
U.S. locations: 1
States / cities: Tallahassee, Florida

Conditions: Critical Illness, COVID-19, PICS, Cognitive Impairment, Mental Health Impairment, Weakness, Muscle, Dysbiosis
Interventions: Fermented Food Diet; Behavioral
Lead sponsor: Mayo Clinic; Other
Eligibility: 18 Years and older
Enrollment: 40 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2026
U.S. locations: 1
States / cities: Rochester, Minnesota

Conditions: Upper Resp Tract Infection
Interventions: TEM-PCR URI Panel, SOC/Empiric Diagnosis; Diagnostic Test · Other
Lead sponsor: Diatherix Laboratories, LLC; Industry
Eligibility: 65 Years and older
Enrollment: 314 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2022
U.S. locations: 4
States / cities: Athens, Alabama • Huntsville, Alabama

Conditions: Respiratory Insufficiency, Extracorporeal Membrane Oxygenation Complication, Mechanical Ventilation Pressure High
Interventions: Ultra-Protective Ventilation Facilitated by Extracorporeal Support, Lung-Protective Ventilation (LPV), Driving Pressure-Limited Ventilation (DPL), Lung- and Diaphragm-Protective Ventilation and Sedation (LDPVS), Early Cohort corticosteroid dose, Extended Cohort corticosteroid dose, Usual care without routine corticosteroids, Usual care without extending corticosteroids, Usual care with fludrocortisone, Usual care without fludrocortisone, Drug 4 mL:, Drug 40 mg:, PEEP-20, PEEP-AOP, PEEP-10, VV ECMO-facilitated strategy of earlier awakening, extubation and rehabilitation, Electrical impedance tomography (EIT), no treatment / intervention arm is involved., Usual care, Early Routine IMT; Other · Drug
Lead sponsor: University Health Network, Toronto; Other
Eligibility: 18 Years and older
Enrollment: 6,250 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2027
U.S. locations: 27
States / cities: Tucson, Arizona • Los Angeles, California • San Diego, California + 20 more

Conditions: Myocardial Infarction, Inflammation, Critical Illness
Interventions: Not listed
Lead sponsor: NYU Langone Health; Other
Eligibility: 21 Years and older
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2015 – 2016
U.S. locations: 1
States / cities: New York, New York

Conditions: Acute Respiratory Distress Syndrome, Vitamin D Deficiency, Critical Illness
Interventions: Vitamin D3, Placebo; Drug
Lead sponsor: Massachusetts General Hospital; Other
Eligibility: 18 Years and older
Enrollment: 1,358 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2017 – 2018
U.S. locations: 47
States / cities: Fresno, California • Los Angeles, California • Sacramento, California + 34 more

Conditions: Bronchiolitis, Pneumonia, Reactive Airway Disease, Asthma, Tobacco Smoking, Tobacco Cessation, Bronchopulmonary Dysplasia
Interventions: Breathe Easy Coalition written materials, Maine Tobacco Helpline, Urine cotinine testing; Behavioral · Diagnostic Test
Lead sponsor: MaineHealth; Other
Eligibility: Up to 10 Years
Enrollment: 3 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2017
U.S. locations: 1
States / cities: Portland, Maine

Conditions: Coronavirus Disease (COVID-19)
Interventions: Molnupiravir, Placebo; Drug
Lead sponsor: Merck Sharp & Dohme LLC; Industry
Eligibility: 18 Years and older
Enrollment: 3,082 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2031
U.S. locations: 71
States / cities: Cullman, Alabama • Paradise Valley, Arizona • Phoenix, Arizona + 58 more

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

Conditions: Asthma, Wheezing
Interventions: Azithromycin, Placebo; Drug
Lead sponsor: University of Arizona; Other
Eligibility: 18 Months to 60 Months
Enrollment: 840 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2025
U.S. locations: 8
States / cities: Atlanta, Georgia • Boston, Massachusetts • New York, New York + 5 more

Conditions: Influenza, Influenza, Human, Influenza -Like Illness
Interventions: Oseltamivir, Baloxavir; Drug
Lead sponsor: Insight Therapeutics, LLC; Other
Eligibility: 18 Years to 120 Years
Enrollment: 1,000 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2021 – 2023
U.S. locations: 1
States / cities: Norfolk, Virginia

Conditions: COVID-19, Viral Respiratory Illnesses
Interventions: Nitazoxanide, Placebo, Vitamin Super B-Complex; Drug · Dietary Supplement
Lead sponsor: Romark Laboratories L.C.; Industry
Eligibility: 18 Years to 120 Years
Enrollment: 1,407 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2021
U.S. locations: 26
States / cities: Hot Springs, Arkansas • Huntington Beach, California • Long Beach, California + 21 more

Conditions: Acute Lung Injury, Acute Respiratory Distress Syndrome, Mechanical Ventilation
Interventions: APRV, Conventional MV; Device
Lead sponsor: Johns Hopkins University; Other
Eligibility: 18 Years and older
Enrollment: 2 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008
U.S. locations: 1
States / cities: Baltimore, Maryland

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

Conditions: Acute Respiratory Distress Syndrome, Oxidative Stress, Euthyroid Sick Syndromes, Systemic Inflammatory Response Syndrome
Interventions: Jevity 1.5; Other
Lead sponsor: University of Illinois Chicago; Other
Eligibility: 18 Years and older
Enrollment: 35 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2017 – 2018
U.S. locations: 1
States / cities: Chicago, Illinois

Conditions: Critical Illness, Acute Respiratory Failure, Adult Syndrome
Interventions: Intervention Arm; Other
Lead sponsor: Wake Forest University Health Sciences; Other
Eligibility: 18 Years and older
Enrollment: 10 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2015
U.S. locations: 1
States / cities: Winston-Salem, North Carolina

Search by objective public record fields.

Breathing Training to Improve Human Performance at High Altitude

Prochlorperazine Maleate Versus Placebo for the Prophylaxis of Acute Mountain Sickness

Inhaled Sedation in COVID-19-related Acute Respiratory Distress Syndrome (ISCA): an International Research Data Study in the Recent Context of Widespread Disease Resulting From the 2019 (SARS-CoV2) Coronavirus Pandemics (COVID-19)

RI-001 in Immunosuppressed Respiratory Syncytial Virus (RSV) Infected Patients at Risk of Lower Tract RSV Illness

Oxygen Transport in Normobaric vs. Hypobaric Hypoxia

Efficacy Study of A Lotion to Prevent Common Colds

FluSAFE: Flu SMS Alerts to Freeze Exposure

Evaluation of Psychometric Testing Properties of Severity Symptom Grading Scale of Influenza Infection: Flu-PRO Stage III

Effects of Overnight Low Oxygen Exposure on Energy Balance

A Study of Healthy Microbiome, Healthy Mind

TEM-PCR™ Prospective Clinical Utility Study

Platform of Randomized Adaptive Clinical Trials in Critical Illness

Inflammation in Type 2 Myocardial Infarction

Vitamin D to Improve Outcomes by Leveraging Early Treatment

A Study of Tobacco Smoke and Children With Respiratory Illnesses

A Clinical Study of Molnupiravir to Prevent Severe Illness From Coronavirus Disease 2019 (COVID-19) in People Who Are High Risk (MK-4482-023)

Effects of Melatonin on Sleep, Ventilatory Control and Cognition at Altitude

AZithromycin Therapy in Preschoolers With a Severe Wheezing Episode Diagnosed at the Emergency Department

Baloxavir Versus Oseltamivir for Nursing Home Influenza Outbreaks

Trial to Evaluate the Efficacy and Safety of Nitazoxanide (NTZ) for Pre- and Post Exposure Prophylaxis of COVID-19 and Other Viral Respiratory Illnesses (VRI) in Healthcare Workers and Others at Increased Risk of SARS-CoV-2 Infection

Airway Pressure Release Ventilation in Acute Lung Injury

Effects of Melatonin on Sleep, Ventilatory Control and Cognition at Altitude.

Feeding the Critically Ill During Phases of Altered Redox Status

Feasibility of Upright Bed Position in ARDS Patients