{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+gas",
    "query": {
      "intervention": "Placebo gas"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 115,
    "total_pages": 12,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+gas&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-01T15:02:17.017Z",
  "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": "NCT07387315",
      "title": "A Randomized, Placebo-controlled Trial of Nitrous Oxide During In-office Bladder Botox Injections",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder",
        "Neurogenic Bladder",
        "Urge Incontinence",
        "Pain",
        "Urinary Incontinence",
        "Urinary Bladder, Overactive",
        "Urinary Bladder, Neurogenic",
        "Urinary Bladder Neurogenesis",
        "Urinary Incontinence, Urge",
        "Pelvic Floor Disorders"
      ],
      "interventions": [
        {
          "name": "Pro-Nox Nitrous Oxide/Oxygen Delivery System",
          "type": "DRUG"
        },
        {
          "name": "Standard Care for Bladder Botox Injection",
          "type": "DRUG"
        },
        {
          "name": "Sham Mask",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "TriHealth Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 96,
      "start_date": "2026-02",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 2,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07387315"
    },
    {
      "nct_id": "NCT01891500",
      "title": "Early iNO for Oxidative Stress, Vascular Tone and Inflammation in Babies With Hypoxic Respiratory Failure",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Persistent Fetal Circulation Syndrome",
        "Hypertension, Pulmonary, of Newborn, Persistent",
        "Persistent Pulmonary Hypertension of Newborn"
      ],
      "interventions": [
        {
          "name": "Inhaled nitric oxide",
          "type": "DRUG"
        },
        {
          "name": "Nitrogen Gas",
          "type": "DRUG"
        },
        {
          "name": "Crossover iNO",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Minutes",
        "maximum_age": "48 Hours",
        "sex": "ALL",
        "summary": "30 Minutes to 48 Hours"
      },
      "enrollment_count": 0,
      "start_date": "2016-05",
      "completion_date": "2019-09-19",
      "has_results": false,
      "last_update_posted_date": "2020-01-07",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01891500"
    },
    {
      "nct_id": "NCT05643482",
      "title": "Hyperbaric Oxygen Therapy for Post-Concussion Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Post-Concussion Syndrome"
      ],
      "interventions": [
        {
          "name": "Hyperbaric Oxygen Treatment",
          "type": "DEVICE"
        },
        {
          "name": "Placebo gas",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 12,
      "start_date": "2023-03-01",
      "completion_date": "2025-05-12",
      "has_results": false,
      "last_update_posted_date": "2025-10-14",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05643482"
    },
    {
      "nct_id": "NCT04398290",
      "title": "iNOPulse for COVID-19",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19",
        "Hypoxemia",
        "Hypoxemic Respiratory Failure"
      ],
      "interventions": [
        {
          "name": "Inhaled nitric oxide (iNO)",
          "type": "DRUG"
        },
        {
          "name": "Nitrogen gas",
          "type": "DRUG"
        },
        {
          "name": "Oxygen gas",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Roger Alvarez",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-12-01",
      "completion_date": "2021-07-15",
      "has_results": false,
      "last_update_posted_date": "2020-08-19",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04398290"
    },
    {
      "nct_id": "NCT01939301",
      "title": "Nitric Oxide to Treat Pulmonary Embolism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pulmonary Embolism"
      ],
      "interventions": [
        {
          "name": "Inhaled Nitric Oxide",
          "type": "DRUG"
        },
        {
          "name": "Sham",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 78,
      "start_date": "2013-10",
      "completion_date": "2016-10-31",
      "has_results": true,
      "last_update_posted_date": "2018-10-03",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 4,
      "location_summary": "Indianapolis, Indiana • Jackson, Mississippi",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Jackson",
          "state": "Mississippi"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01939301"
    },
    {
      "nct_id": "NCT07565753",
      "title": "TEAPOT Study Multisite",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Hemorrhage, Surgical",
        "Tonsillar Bleeding"
      ],
      "interventions": [
        {
          "name": "Tranexamic Acid Injectable Product",
          "type": "DRUG"
        },
        {
          "name": "Normal Saline",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "The University of Texas Health Science Center at San Antonio",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "2 Years to 17 Years"
      },
      "enrollment_count": 30,
      "start_date": "2026-07-14",
      "completion_date": "2028-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 3,
      "location_summary": "Davis, California • Providence, Rhode Island • San Antonio, Texas",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07565753"
    },
    {
      "nct_id": "NCT07210606",
      "title": "Central Apnea in Heart Failure: Physiological Mechanisms to Inform Treatment",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Sleep Disordered Breathing",
        "Able Bodied"
      ],
      "interventions": [
        {
          "name": "Trazodone + PAP therapy",
          "type": "DRUG"
        },
        {
          "name": "Oxygen + PAP therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2026-10-01",
      "completion_date": "2030-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-07",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07210606"
    },
    {
      "nct_id": "NCT03971617",
      "title": "Clinical Trial to Evaluate the Safety and Tolerability of Hydrogen in Patients With Parkinson's Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "Hydrogen",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stony Brook University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 2,
      "start_date": "2019-05-29",
      "completion_date": "2021-04-29",
      "has_results": true,
      "last_update_posted_date": "2023-04-12",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 1,
      "location_summary": "Stony Brook, New York",
      "locations": [
        {
          "city": "Stony Brook",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03971617"
    },
    {
      "nct_id": "NCT01508637",
      "title": "Diesel Exhaust and Vascular Function",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Effects"
      ],
      "interventions": [
        {
          "name": "Diesel Exhaust",
          "type": "OTHER"
        },
        {
          "name": "Filtered Air",
          "type": "OTHER"
        },
        {
          "name": "Terazosin",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 24,
      "start_date": "2012-01",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2015-08-03",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01508637"
    },
    {
      "nct_id": "NCT00846287",
      "title": "Assessment of Arformoterol for Chronic Obstructive Pulmonary Disease (COPD) Using Hyperpolarized 3He MRI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Obstructive Pulmonary Disease"
      ],
      "interventions": [
        {
          "name": "Hyperpolarized Helium-3",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Aformoterol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Massachusetts, Worcester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2008-11",
      "completion_date": "2011-04",
      "has_results": true,
      "last_update_posted_date": "2012-11-01",
      "last_synced_at": "2026-09-01T15:02:17.017Z",
      "location_count": 1,
      "location_summary": "Worcester, Massachusetts",
      "locations": [
        {
          "city": "Worcester",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00846287"
    }
  ]
}