{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=ragweed",
    "query": {
      "intervention": "ragweed"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 29,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=ragweed&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T12:43:13.196Z",
  "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": "NCT02676765",
      "title": "Desensitization and Cross-Desensitization During Oral Grass or Ragweed Pollen Immunotherapy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Immunologic Desensitization"
      ],
      "interventions": [
        {
          "name": "allergen extract tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 58,
      "start_date": "2016-06",
      "completion_date": "2018-01-18",
      "has_results": true,
      "last_update_posted_date": "2022-03-18",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02676765"
    },
    {
      "nct_id": "NCT02764437",
      "title": "AsthMatic Inflammation and Neurocircuitry Activation (MINA)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Allergic Asthma"
      ],
      "interventions": [
        {
          "name": "Whole lung antigen challenge, segmental allergen challenge",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 43,
      "start_date": "2016-07-28",
      "completion_date": "2020-03-31",
      "has_results": false,
      "last_update_posted_date": "2021-02-16",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02764437"
    },
    {
      "nct_id": "NCT01454505",
      "title": "Safety and Efficacy of AL-53817 Nasal Spray Solution",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Nasal Allergies",
        "Allergies"
      ],
      "interventions": [
        {
          "name": "AL-53817 nasal spray solution",
          "type": "DRUG"
        },
        {
          "name": "Vehicle nasal spray",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Alcon Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 110,
      "start_date": "2011-10",
      "completion_date": "2012-03",
      "has_results": true,
      "last_update_posted_date": "2013-05-20",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 1,
      "location_summary": "Fort Worth, Texas",
      "locations": [
        {
          "city": "Fort Worth",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01454505"
    },
    {
      "nct_id": "NCT00599872",
      "title": "Efficacy Study of Sublingual Immunotherapy to Treat Ragweed Allergies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "Standardized Ragweed Allergenic Extract",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Greer Laboratories",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 430,
      "start_date": "2008-03",
      "completion_date": "2008-12",
      "has_results": true,
      "last_update_posted_date": "2015-01-14",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 30,
      "location_summary": "Normal, Illinois • Evansville, Indiana • Iowa City, Iowa + 23 more",
      "locations": [
        {
          "city": "Normal",
          "state": "Illinois"
        },
        {
          "city": "Evansville",
          "state": "Indiana"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00599872"
    },
    {
      "nct_id": "NCT00502775",
      "title": "Fluticasone Furoate Nasal Spray Versus Oral Fexofenadine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Rhinitis, Allergic, Seasonal"
      ],
      "interventions": [
        {
          "name": "fluticasone furoate, fexofenadine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 680,
      "start_date": "2007-08",
      "completion_date": "2007-11",
      "has_results": true,
      "last_update_posted_date": "2016-12-09",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 42,
      "location_summary": "Little Rock, Arkansas • Albany, Georgia • Columbus, Georgia + 37 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Albany",
          "state": "Georgia"
        },
        {
          "city": "Columbus",
          "state": "Georgia"
        },
        {
          "city": "Lawrenceville",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00502775"
    },
    {
      "nct_id": "NCT00982163",
      "title": "A Single-Center Evaluation of the Pattern of Allergic Signs and Symptoms During 4 Weeks in Ragweed Season",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Allergic Conjunctivitis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "ORA, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 34,
      "start_date": "2008-08",
      "completion_date": "2009-09",
      "has_results": false,
      "last_update_posted_date": "2009-09-23",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 1,
      "location_summary": "North Andover, Massachusetts",
      "locations": [
        {
          "city": "North Andover",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00982163"
    },
    {
      "nct_id": "NCT00330083",
      "title": "Safety of ALK Ragweed Tablet",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Allergy"
      ],
      "interventions": [
        {
          "name": "ALK Ragweed Tablet",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ALK-Abelló A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 72,
      "start_date": "2006-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2007-09-21",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00330083"
    },
    {
      "nct_id": "NCT01925729",
      "title": "TransMEM Gas Exchange -- Project 1, Aim 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Middle Ear Disease",
        "Nasal Allergy"
      ],
      "interventions": [
        {
          "name": "ragweed",
          "type": "BIOLOGICAL"
        },
        {
          "name": "histamine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "pseudoephedrine",
          "type": "DRUG"
        },
        {
          "name": "Oxymetazoline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Cuneyt M. Alper",
      "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": 84,
      "start_date": "2013-10-01",
      "completion_date": "2019-03-22",
      "has_results": false,
      "last_update_posted_date": "2020-02-07",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01925729"
    },
    {
      "nct_id": "NCT01240889",
      "title": "Effects of Intranasal Corticosteroid and Montelukast On Nasal Allergen Challenges*",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Allergy"
      ],
      "interventions": [
        {
          "name": "Fluticasone",
          "type": "DRUG"
        },
        {
          "name": "Fluticason",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "19 Years to 60 Years"
      },
      "enrollment_count": 60,
      "start_date": "2010-11",
      "completion_date": "2011-07",
      "has_results": false,
      "last_update_posted_date": "2012-10-10",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01240889"
    },
    {
      "nct_id": "NCT01723397",
      "title": "Effect of Nasaleze on Nasal Challenge With Allergen",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "Nasaleze Spray",
          "type": "DRUG"
        },
        {
          "name": "Placebo spray",
          "type": "OTHER"
        },
        {
          "name": "Allergen",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "BIOLOGICAL"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 14,
      "start_date": "2012-11",
      "completion_date": "2014-07",
      "has_results": true,
      "last_update_posted_date": "2017-01-02",
      "last_synced_at": "2026-09-05T12:43:13.196Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01723397"
    }
  ]
}