{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+Nitric+Oxide+testing",
    "query": {
      "intervention": "Oral Nitric Oxide testing"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 12,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+Nitric+Oxide+testing&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-23T19:58:23.861Z",
  "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": "NCT00814281",
      "title": "Airborne Ultrafine and Fine Particulate Matter: A Cause for Endothelial Dysfunction in Man?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Airway Inflammation"
      ],
      "interventions": [
        {
          "name": "placebo",
          "type": "OTHER"
        },
        {
          "name": "Montelukast",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Marywood University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "MALE",
        "summary": "18 Years to 30 Years · Male only"
      },
      "enrollment_count": 24,
      "start_date": "2007-05",
      "completion_date": "2009-05",
      "has_results": false,
      "last_update_posted_date": "2009-05-21",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 1,
      "location_summary": "Scranton, Pennsylvania",
      "locations": [
        {
          "city": "Scranton",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00814281"
    },
    {
      "nct_id": "NCT00662051",
      "title": "Oral Contraceptives and Asthma Control",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma",
        "Regulatory T Cell Function"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Kentucky",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2008-04",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2013-08-09",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00662051"
    },
    {
      "nct_id": "NCT01929824",
      "title": "Nasal Nitric Oxide Levels in Eosinophilic Esophagitis (EoE)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Eosinophilic Esophagitis"
      ],
      "interventions": [
        {
          "name": "Oral Nitric Oxide testing",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2013-08",
      "completion_date": "2019-09-25",
      "has_results": false,
      "last_update_posted_date": "2019-09-30",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01929824"
    },
    {
      "nct_id": "NCT06623435",
      "title": "Real World and Genomic Data Based Asthma Insight Through Network Analysis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Icahn School of Medicine at Mount Sinai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1075,
      "start_date": "2019-11-07",
      "completion_date": "2025-06-16",
      "has_results": false,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 5,
      "location_summary": "Denver, Colorado • New York, New York",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06623435"
    },
    {
      "nct_id": "NCT01921426",
      "title": "A Phase 1 Dose Escalation Study of GC4419 in Combination With Chemoradiation for Squamous Cell Cancer of the Head & Neck",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Squamous Cell Carcinoma of the Oral Cavity",
        "Squamous Cell Carcinoma of the Oropharynx"
      ],
      "interventions": [
        {
          "name": "GC4419",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Galera Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2013-08",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2016-09-22",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 10,
      "location_summary": "Lakeland, Florida • Iowa City, Iowa • St Louis, Missouri + 7 more",
      "locations": [
        {
          "city": "Lakeland",
          "state": "Florida"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01921426"
    },
    {
      "nct_id": "NCT02057458",
      "title": "Blood Flow and Vascular Function in Cystic Fibrosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "Sildenafil (Acute-1 hour)",
          "type": "DRUG"
        },
        {
          "name": "Sildenafil (Subchronic-4 weeks)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Augusta University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2014-04",
      "completion_date": "2018-07",
      "has_results": true,
      "last_update_posted_date": "2020-04-24",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 1,
      "location_summary": "Augusta, Georgia",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02057458"
    },
    {
      "nct_id": "NCT02966665",
      "title": ": Vascular Function in Health and Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Obstructive Pulmonary Disease",
        "Pulmonary Artery Hypertension",
        "Heart Failure",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Maximum Exercise Tests",
          "type": "OTHER"
        },
        {
          "name": "BH4, L-NMMA, Vitamin C, Vitamin E, α-Lipoic Acid and L-Ascorbate",
          "type": "DRUG"
        },
        {
          "name": "BQ-123",
          "type": "DRUG"
        },
        {
          "name": "Fexofenadine, Ranitidine",
          "type": "DRUG"
        },
        {
          "name": "Angiotensin-II, Valsartan",
          "type": "OTHER"
        },
        {
          "name": "Acetylcholine, Sodium Nitroprusside, Angiotensin-II, Norepinephrine, Phentolamine",
          "type": "DRUG"
        },
        {
          "name": "BQ-123, MitoQ, BH4",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Russell Richardson",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 420,
      "start_date": "2008-09",
      "completion_date": "2026-08",
      "has_results": false,
      "last_update_posted_date": "2025-09-26",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02966665"
    },
    {
      "nct_id": "NCT00625820",
      "title": "Tetrahydrobiopterin in Patients With Chronic Kidney Disease (CKD) and Albuminuria",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Kidney Disease",
        "Albuminuria"
      ],
      "interventions": [
        {
          "name": "6R BH4",
          "type": "DRUG"
        },
        {
          "name": "Vitamin C",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 17,
      "start_date": "2008-05",
      "completion_date": "2008-09",
      "has_results": true,
      "last_update_posted_date": "2016-10-18",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00625820"
    },
    {
      "nct_id": "NCT05036213",
      "title": "The Effects of Oral Inorganic Nitrate Supplementation on Lower Limb Perfusion During Exercise in Patients With PAD",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Peripheral Arterial Disease",
        "Peripheral Vascular Diseases"
      ],
      "interventions": [
        {
          "name": "BEET IT - Concentrate Beet root juice",
          "type": "DRUG"
        },
        {
          "name": "BEET IT - Concentrate Beet root juice (nitrate depleted)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "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": 28,
      "start_date": "2020-02-01",
      "completion_date": "2024-12",
      "has_results": false,
      "last_update_posted_date": "2023-11-29",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05036213"
    },
    {
      "nct_id": "NCT01398943",
      "title": "Nitric Oxide Bioavailability in Chronic Obstructive Pulmonary Disease (COPD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive"
      ],
      "interventions": [
        {
          "name": "Tetrahydrobiopterin (BH4)",
          "type": "DRUG"
        },
        {
          "name": "Antioxidant Cocktail",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Augusta University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2010-09",
      "completion_date": "2015-06",
      "has_results": true,
      "last_update_posted_date": "2017-12-11",
      "last_synced_at": "2026-09-23T19:58:23.861Z",
      "location_count": 1,
      "location_summary": "Augusta, Georgia",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01398943"
    }
  ]
}