{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Mountain+Sickness",
    "query": {
      "condition": "Mountain Sickness"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 41,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Mountain+Sickness&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-10T20:34:26.417Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01241513",
      "title": "Induced Changes in Ventilatory Responsiveness and Altitude Exposure",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Effects of High Altitude",
        "Hypoxia",
        "Inadequate or Impaired Breathing Pattern or Ventilation",
        "Abnormal Blood Oxygen Pressure"
      ],
      "interventions": [
        {
          "name": "NAC",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "United States Army Research Institute of Environmental Medicine",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 21,
      "start_date": "2010-11-01",
      "completion_date": "2013-02-28",
      "has_results": true,
      "last_update_posted_date": "2020-04-30",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Natick, Massachusetts",
      "locations": [
        {
          "city": "Natick",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01241513"
    },
    {
      "nct_id": "NCT05971290",
      "title": "Effects of Continuous Positive Airway Pressure on Peripheral Oxygen Saturation, Work of Breathing, and Exercise Tolerance at Altitude",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypoxemia",
        "Altitude Hypoxia"
      ],
      "interventions": [
        {
          "name": "Continuous positive airway pressure",
          "type": "DEVICE"
        },
        {
          "name": "Ambient air",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 25,
      "start_date": "2023-07-22",
      "completion_date": "2023-10-01",
      "has_results": false,
      "last_update_posted_date": "2023-08-02",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05971290"
    },
    {
      "nct_id": "NCT00498563",
      "title": "Effects of Mild Hypobaric Hypoxia on Sleep and Post-sleep Performance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Altitude",
        "Hypoxia",
        "Environmental Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "altitude exposure in hypobaric chamber",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Oklahoma State University Center for Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "60 Years",
        "sex": "MALE",
        "summary": "30 Years to 60 Years · Male only"
      },
      "enrollment_count": 34,
      "start_date": "2006-10",
      "completion_date": "2007-08",
      "has_results": false,
      "last_update_posted_date": "2015-04-24",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Tulsa, Oklahoma",
      "locations": [
        {
          "city": "Tulsa",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00498563"
    },
    {
      "nct_id": "NCT05734716",
      "title": "Colorado-Oregon Altitude Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acute Mountain Sickness"
      ],
      "interventions": [
        {
          "name": "Erythropoietin",
          "type": "DRUG"
        },
        {
          "name": "Iron sucrose (Venofer)",
          "type": "DRUG"
        },
        {
          "name": "Sterile Sodium Chloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Oregon",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 121,
      "start_date": "2021-02-17",
      "completion_date": "2023-01-01",
      "has_results": false,
      "last_update_posted_date": "2023-03-10",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 2,
      "location_summary": "Leadville, Colorado • Eugene, Oregon",
      "locations": [
        {
          "city": "Leadville",
          "state": "Colorado"
        },
        {
          "city": "Eugene",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05734716"
    },
    {
      "nct_id": "NCT01587027",
      "title": "Safety Evaluation of Aminophylline and Methazolamide",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Mountain Sickness"
      ],
      "interventions": [
        {
          "name": "Aminophylline",
          "type": "DRUG"
        },
        {
          "name": "Methazolamide",
          "type": "DRUG"
        },
        {
          "name": "Aminophylline and Methazolamide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Poudre Valley Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 16,
      "start_date": "2011-12",
      "completion_date": "2012-02",
      "has_results": true,
      "last_update_posted_date": "2017-02-10",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Loveland, Colorado",
      "locations": [
        {
          "city": "Loveland",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01587027"
    },
    {
      "nct_id": "NCT03530163",
      "title": "Breathing Training to Improve Human Performance at High Altitude",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mountain Sickness Acute"
      ],
      "interventions": [
        {
          "name": "Respiratory Muscle Training",
          "type": "DEVICE"
        },
        {
          "name": "Sham Breathing Training",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "MALE",
        "summary": "18 Years to 45 Years · Male only"
      },
      "enrollment_count": 28,
      "start_date": "2018-08-09",
      "completion_date": "2020-01-15",
      "has_results": false,
      "last_update_posted_date": "2022-04-19",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03530163"
    },
    {
      "nct_id": "NCT03335917",
      "title": "Oxygen Transport in Normobaric vs. Hypobaric Hypoxia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypoxia, Altitude",
        "Exercise"
      ],
      "interventions": [
        {
          "name": "Hypoxia",
          "type": "OTHER"
        },
        {
          "name": "Exercise",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "19 Years to 45 Years"
      },
      "enrollment_count": 12,
      "start_date": "2017-08-15",
      "completion_date": "2018-06-01",
      "has_results": false,
      "last_update_posted_date": "2023-09-29",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03335917"
    },
    {
      "nct_id": "NCT06129825",
      "title": "Pharmacologic Induction of Tolerance for Hypoxia & Hypothermia",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypothermia",
        "Hypoxia",
        "Mountain Sickness"
      ],
      "interventions": [
        {
          "name": "Prospective",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "88 Years",
        "sex": "ALL",
        "summary": "18 Years to 88 Years"
      },
      "enrollment_count": 50,
      "start_date": "2023-12-11",
      "completion_date": "2027-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-02-12",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06129825"
    },
    {
      "nct_id": "NCT04151927",
      "title": "Effects of Overnight Low Oxygen Exposure on Energy Balance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Resting Metabolic Rate",
        "Appetite",
        "Heart Rate Variability"
      ],
      "interventions": [
        {
          "name": "Normobaric Hypoxia",
          "type": "DEVICE"
        },
        {
          "name": "Normobaric Normoxia",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Florida State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "20 Years to 45 Years"
      },
      "enrollment_count": 20,
      "start_date": "2019-12-11",
      "completion_date": "2021-10-02",
      "has_results": false,
      "last_update_posted_date": "2021-11-29",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Tallahassee, Florida",
      "locations": [
        {
          "city": "Tallahassee",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04151927"
    },
    {
      "nct_id": "NCT03192488",
      "title": "Effect of an H1 Receptor Antagonist on Exercise Performance in Hypoxia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypoxia, Altitude"
      ],
      "interventions": [
        {
          "name": "Cetirizine",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral capsule",
          "type": "DRUG"
        },
        {
          "name": "Hypoxia",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 13,
      "start_date": "2017-08-31",
      "completion_date": "2018-06-06",
      "has_results": true,
      "last_update_posted_date": "2020-06-16",
      "last_synced_at": "2026-06-10T20:34:26.417Z",
      "location_count": 1,
      "location_summary": "Bloomington, Indiana",
      "locations": [
        {
          "city": "Bloomington",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03192488"
    }
  ]
}