{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Hydroxyzine&page=2",
    "query": {
      "intervention": "Hydroxyzine",
      "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?intervention=Hydroxyzine&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-17T14:41:38.359Z",
  "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": "NCT04836806",
      "title": "Cetirizine and Famotidine for COVID-19",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Cetirizine and Famotidine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "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": "2021-08",
      "completion_date": "2022-07",
      "has_results": false,
      "last_update_posted_date": "2021-08-20",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04836806"
    },
    {
      "nct_id": "NCT04990388",
      "title": "Safety, Tolerability, and Pharmacokinetics of UX053 in Patients With Glycogen Storage Disease Type III (GSD III)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Glycogen Storage Disease Type III"
      ],
      "interventions": [
        {
          "name": "UX053",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Antipyretic",
          "type": "DRUG"
        },
        {
          "name": "H2 Blocker",
          "type": "DRUG"
        },
        {
          "name": "H1 Blocker",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Ultragenyx Pharmaceutical Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2021-10-18",
      "completion_date": "2023-03-20",
      "has_results": true,
      "last_update_posted_date": "2024-04-16",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 4,
      "location_summary": "Orange, California • Atlanta, Georgia • Philadelphia, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04990388"
    },
    {
      "nct_id": "NCT04179461",
      "title": "Personalized Treatment Algorithms for Difficult-to-treat Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Asthma in Children"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DRUG"
        },
        {
          "name": "antihistamine",
          "type": "DRUG"
        },
        {
          "name": "Azithromycin",
          "type": "DRUG"
        },
        {
          "name": "emollient cream",
          "type": "DRUG"
        },
        {
          "name": "Fluticasone Propionate",
          "type": "DRUG"
        },
        {
          "name": "Asthma Controller Medication",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Years to 17 Years"
      },
      "enrollment_count": 21,
      "start_date": "2018-03-16",
      "completion_date": "2019-10-03",
      "has_results": true,
      "last_update_posted_date": "2021-08-20",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04179461"
    },
    {
      "nct_id": "NCT01241214",
      "title": "Study of ACT-129968 in Adult Patients With Seasonal Allergic Rhinitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Seasonal Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "ACT-129968",
          "type": "DRUG"
        },
        {
          "name": "Cetirizine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Idorsia Pharmaceuticals Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 579,
      "start_date": "2010-11",
      "completion_date": "2011-02",
      "has_results": false,
      "last_update_posted_date": "2019-05-15",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 7,
      "location_summary": "Austin, Texas • Kerrville, Texas • New Braunfels, Texas + 1 more",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        },
        {
          "city": "Kerrville",
          "state": "Texas"
        },
        {
          "city": "New Braunfels",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01241214"
    },
    {
      "nct_id": "NCT01916226",
      "title": "A Comparator Study of Fluticasone Propionate Nasal Spray Verses (vs) Cetirizine in the Treatment of Seasonal Allergic Rhinitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Rhinitis, Allergic, Perennial and Seasonal"
      ],
      "interventions": [
        {
          "name": "FPNS",
          "type": "DRUG"
        },
        {
          "name": "FPNS Placebo",
          "type": "DRUG"
        },
        {
          "name": "Cetirizine",
          "type": "DRUG"
        },
        {
          "name": "Cetirizine Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 682,
      "start_date": "2013-08-01",
      "completion_date": "2013-10-17",
      "has_results": true,
      "last_update_posted_date": "2018-06-20",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 31,
      "location_summary": "Little Rock, Arkansas • Denver, Colorado • Aventura, Florida + 27 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Aventura",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01916226"
    },
    {
      "nct_id": "NCT01825655",
      "title": "Study of Using Long Acting Antihistamine to Treat Opioid Induced Itching",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pruritus"
      ],
      "interventions": [
        {
          "name": "Cetirizine",
          "type": "DRUG"
        },
        {
          "name": "Placebo or sugar pill",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "6 Years to 18 Years"
      },
      "enrollment_count": 3,
      "start_date": "2014-09",
      "completion_date": "2017-11",
      "has_results": true,
      "last_update_posted_date": "2018-10-10",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01825655"
    },
    {
      "nct_id": "NCT00649857",
      "title": "Food Study of Cetirizine HCl Tablets 10 mg and Zyrtec® 10 mg",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Cetirizine HCl Tablets 10 mg",
          "type": "DRUG"
        },
        {
          "name": "Zyrtec® 10 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mylan Pharmaceuticals Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2002-11",
      "completion_date": "2002-12",
      "has_results": false,
      "last_update_posted_date": "2024-04-24",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00649857"
    },
    {
      "nct_id": "NCT01372670",
      "title": "Does Hydroxyzine Decrease Anxiety in Underweight Patients Diagnosed With an Eating Disorder",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Anxiety in Those Patients With Anorexia Nervosa",
        "Eating Disorder Not Otherwise Specified, BMI (<=18)"
      ],
      "interventions": [
        {
          "name": "Hydroxyzine",
          "type": "DRUG"
        },
        {
          "name": "hydroxyzine HCL",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "HealthPartners Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "8 Years to 25 Years"
      },
      "enrollment_count": 0,
      "start_date": "2012-01",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2016-11-15",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01372670"
    },
    {
      "nct_id": "NCT04188106",
      "title": "Efficacy and Tolerability of Combination Varenicline With Hydroxyzine as a Potential Smoking Cessation Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Smoking Cessation",
        "Stress",
        "Sleep Disturbance",
        "Nausea"
      ],
      "interventions": [
        {
          "name": "Varenicline Pill",
          "type": "DRUG"
        },
        {
          "name": "Hydroxyzine Pill",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rose Research Center, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "19 Years to 65 Years"
      },
      "enrollment_count": 26,
      "start_date": "2019-06-17",
      "completion_date": "2019-12-15",
      "has_results": true,
      "last_update_posted_date": "2023-03-03",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 2,
      "location_summary": "Charlotte, North Carolina • Raleigh, North Carolina",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Raleigh",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04188106"
    },
    {
      "nct_id": "NCT00864279",
      "title": "A Relative Bioavailability Study of Cetirizine HCl 10 mg Tablets Under Fasting Conditions",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Cetirizine Hydrochloride 10 mg tablets, single dose",
          "type": "DRUG"
        },
        {
          "name": "Zyrtec® 10 mg tablets, single dose",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Actavis Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 26,
      "start_date": "2006-08",
      "completion_date": "2006-09",
      "has_results": false,
      "last_update_posted_date": "2010-08-16",
      "last_synced_at": "2026-09-17T14:41:38.359Z",
      "location_count": 1,
      "location_summary": "Morrisville, North Carolina",
      "locations": [
        {
          "city": "Morrisville",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00864279"
    }
  ]
}