{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=High+Altitude&page=2",
    "query": {
      "condition": "High Altitude",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=High+Altitude&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-06-10T10:02:51.015Z",
  "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": "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": "2026-06-10T10:02:51.015Z",
      "location_count": 1,
      "location_summary": "Tallahassee, Florida",
      "locations": [
        {
          "city": "Tallahassee",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04151927"
    },
    {
      "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": "2026-06-10T10:02:51.015Z",
      "location_count": 1,
      "location_summary": "Loveland, Colorado",
      "locations": [
        {
          "city": "Loveland",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01587027"
    },
    {
      "nct_id": "NCT01794078",
      "title": "A Study to Test the Safety of Combined Dosing With Aminophylline and Ambrisentan in Exercising Healthy Human Volunteers at Simulated High Altitude",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Acute Mountain Sickness and Fatigue"
      ],
      "interventions": [
        {
          "name": "Aminophylline 400 mg",
          "type": "DRUG"
        },
        {
          "name": "Ambrisentan 5 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Robert J Noveck, M.D.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 92,
      "start_date": "2013-09",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2015-11-13",
      "last_synced_at": "2026-06-10T10:02:51.015Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01794078"
    },
    {
      "nct_id": "NCT02391519",
      "title": "Effects of High Altitude on AMPK Activation",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnancy",
        "IUGR",
        "Preeclampsia"
      ],
      "interventions": [
        {
          "name": "Collection of myometrial, cord blood, and placental tissue samples",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 84,
      "start_date": "2016-01",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-13",
      "last_synced_at": "2026-06-10T10:02:51.015Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02391519"
    },
    {
      "nct_id": "NCT07517068",
      "title": "The Role of Acetazolamide in Mitigating Inflammation and Innate Immune Activation at High Altitude",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Hypoxemia",
        "Acute Mountain Sickness (AMS)",
        "Inflammation",
        "Immune Response"
      ],
      "interventions": [
        {
          "name": "ACETAZOLAMIDE oral capsule",
          "type": "DRUG"
        },
        {
          "name": "Placebo Arm",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "University of California, Riverside",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 19,
      "start_date": "2025-09-17",
      "completion_date": "2026-12-15",
      "has_results": false,
      "last_update_posted_date": "2026-04-08",
      "last_synced_at": "2026-06-10T10:02:51.015Z",
      "location_count": 1,
      "location_summary": "Riverside, California",
      "locations": [
        {
          "city": "Riverside",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07517068"
    },
    {
      "nct_id": "NCT01530464",
      "title": "The Safety Evaluation of Aminophylline and Ambrisentan When Administered Orally Alone and in Combination to Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "High Altitude Pulmonary Hypertension"
      ],
      "interventions": [
        {
          "name": "Aminophylline",
          "type": "DRUG"
        },
        {
          "name": "Ambrisentan",
          "type": "DRUG"
        },
        {
          "name": "Aminophylline plus ambrisentan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Thies Schroeder",
      "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": 18,
      "start_date": "2012-02",
      "completion_date": "2012-04",
      "has_results": true,
      "last_update_posted_date": "2014-01-16",
      "last_synced_at": "2026-06-10T10:02:51.015Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01530464"
    },
    {
      "nct_id": "NCT06686693",
      "title": "Intravenous Iron Effects on Performance at High Altitude",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypoxia"
      ],
      "interventions": [
        {
          "name": "Injectafer",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "United States Army Research Institute of Environmental Medicine",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 24,
      "start_date": "2022-04-15",
      "completion_date": "2025-09-30",
      "has_results": false,
      "last_update_posted_date": "2025-03-30",
      "last_synced_at": "2026-06-10T10:02:51.015Z",
      "location_count": 1,
      "location_summary": "Natick, Massachusetts",
      "locations": [
        {
          "city": "Natick",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06686693"
    },
    {
      "nct_id": "NCT00724321",
      "title": "Effects of Iloprost on Hypoxic Pulmonary Vasoconstriction at Altitude",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hypoxic Pulmonary Vasoconstriction"
      ],
      "interventions": [
        {
          "name": "iloprost",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Loma Linda University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 0,
      "start_date": "2008-07",
      "completion_date": "2008-11",
      "has_results": false,
      "last_update_posted_date": "2015-09-18",
      "last_synced_at": "2026-06-10T10:02:51.015Z",
      "location_count": 1,
      "location_summary": "Loma Linda, California",
      "locations": [
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00724321"
    },
    {
      "nct_id": "NCT02233582",
      "title": "Effects of Non-steroidal Anti-inflammatory Drugs (NSAIDS) on Acclimatization to High Altitude",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "High Altitude"
      ],
      "interventions": [
        {
          "name": "Ibuprofen",
          "type": "DRUG"
        },
        {
          "name": "Sugar pill",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 20,
      "start_date": "2014-09",
      "completion_date": "2017-06",
      "has_results": false,
      "last_update_posted_date": "2021-04-06",
      "last_synced_at": "2026-06-10T10:02:51.015Z",
      "location_count": 2,
      "location_summary": "Bishop, California • San Francisco, California",
      "locations": [
        {
          "city": "Bishop",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02233582"
    },
    {
      "nct_id": "NCT00708565",
      "title": "Effects of Iloprost on Hypoxic Pulmonary Vasoconstriction and Exercise Capacity at High Altitude",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hypoxic Pulmonary Vasoconstriction"
      ],
      "interventions": [
        {
          "name": "iloprost",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Loma Linda Health Care System",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "MALE",
        "summary": "18 Years to 80 Years · Male only"
      },
      "enrollment_count": 50,
      "start_date": "2008-07",
      "completion_date": "2008-10",
      "has_results": false,
      "last_update_posted_date": "2008-07-02",
      "last_synced_at": "2026-06-10T10:02:51.015Z",
      "location_count": 1,
      "location_summary": "Loma Linda, California",
      "locations": [
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00708565"
    }
  ]
}