{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diphenhydramine+%28Benadryl%29&page=2",
    "query": {
      "intervention": "Diphenhydramine (Benadryl)",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 488,
    "total_pages": 49,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diphenhydramine+%28Benadryl%29&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diphenhydramine+%28Benadryl%29&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-09T14:03:54.430Z",
  "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": "NCT02972502",
      "title": "Efficacy of Haloperidol vs. Metoclopramide for Treatment of Acute Headaches and Migraines in the Emergency Department",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Headache, Migraine"
      ],
      "interventions": [
        {
          "name": "Metoclopramide",
          "type": "DRUG"
        },
        {
          "name": "Haloperidol",
          "type": "DRUG"
        },
        {
          "name": "Normal Saline",
          "type": "OTHER"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "OhioHealth",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 66,
      "start_date": "2014-02",
      "completion_date": "2017-04-24",
      "has_results": true,
      "last_update_posted_date": "2018-10-23",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02972502"
    },
    {
      "nct_id": "NCT00137202",
      "title": "Post Burn Pruritus Study in Patients Undergoing Wound Healing",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Itching"
      ],
      "interventions": [
        {
          "name": "Ondansetron (Zofran)",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine (Benadryl)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "United States Army Institute of Surgical Research",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 36,
      "start_date": "2005-06",
      "completion_date": "2006-05",
      "has_results": false,
      "last_update_posted_date": "2008-07-28",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Fort Sam Houston, Texas",
      "locations": [
        {
          "city": "Fort Sam Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00137202"
    },
    {
      "nct_id": "NCT04741139",
      "title": "Post IVIG Medication in Children With Immune Thrombocytopenia",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Immune Thrombocytopenia"
      ],
      "interventions": [
        {
          "name": "Acetaminophen and Diphenhydramine Only Product",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "1 Month to 18 Years"
      },
      "enrollment_count": 20,
      "start_date": "2021-09-02",
      "completion_date": "2023-10",
      "has_results": false,
      "last_update_posted_date": "2022-12-27",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04741139"
    },
    {
      "nct_id": "NCT03220958",
      "title": "Metoclopramide for Post Traumatic Headache",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Post-Traumatic Headache"
      ],
      "interventions": [
        {
          "name": "Metoclopramide",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        },
        {
          "name": "Normal saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Montefiore Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 160,
      "start_date": "2017-08-01",
      "completion_date": "2020-04-01",
      "has_results": true,
      "last_update_posted_date": "2021-11-09",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03220958"
    },
    {
      "nct_id": "NCT04375384",
      "title": "Cetuximab After Immunotherapy for the Treatment of Head and Neck Squamous Cell Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Squamous Cell Carcinoma",
        "Recurrent Head and Neck Squamous Cell Carcinoma",
        "Metastatic Head-and-neck Squamous-cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Cetuximab",
          "type": "DRUG"
        },
        {
          "name": "Questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "Quality of life assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 38,
      "start_date": "2020-07-01",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04375384"
    },
    {
      "nct_id": "NCT02029638",
      "title": "BMT and High Dose Post-Transplant Cyclophosphamide for Chimerism Induction and Renal Allograft Tolerance",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Kidney Transplantation"
      ],
      "interventions": [
        {
          "name": "anti-thymocyte globulin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fludarabine",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Total Body Irradiation",
          "type": "RADIATION"
        },
        {
          "name": "acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "diphenhydramine",
          "type": "DRUG"
        },
        {
          "name": "methylprednisolone",
          "type": "DRUG"
        },
        {
          "name": "bone marrow transplant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "MESNA",
          "type": "DRUG"
        },
        {
          "name": "mycophenolate mofetil",
          "type": "DRUG"
        },
        {
          "name": "prednisone",
          "type": "DRUG"
        },
        {
          "name": "filgrastim",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 4,
      "start_date": "2014-01-07",
      "completion_date": "2017-09-06",
      "has_results": true,
      "last_update_posted_date": "2018-09-24",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02029638"
    },
    {
      "nct_id": "NCT02462850",
      "title": "A Multi-Center Actual-Use Study on the Safety of CL 108 for the Treatment of Moderate to Severe Acute Pain Associated With Osteoarthritis of the Knee or Hip",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pain",
        "Nausea",
        "Vomiting"
      ],
      "interventions": [
        {
          "name": "CL-108",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Charleston Laboratories, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 178,
      "start_date": "2014-10",
      "completion_date": "2015-02",
      "has_results": false,
      "last_update_posted_date": "2016-11-03",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02462850"
    },
    {
      "nct_id": "NCT07472413",
      "title": "Alternate Pre-med in Anti-Cluster of Differentiation 20 (CD20) Pilot Project",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Cetirizine",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2026-11-01",
      "completion_date": "2028-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-10-02",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Boca Raton, Florida",
      "locations": [
        {
          "city": "Boca Raton",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07472413"
    },
    {
      "nct_id": "NCT00550342",
      "title": "Rituximab Treatment of Focal Segmental Glomerulosclerosis",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Focal Segmental Glomerulosclerosis (FSGS)"
      ],
      "interventions": [
        {
          "name": "rituximab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "5 Years to 60 Years"
      },
      "enrollment_count": 0,
      "start_date": "2008-01",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2025-05-06",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00550342"
    },
    {
      "nct_id": "NCT02657031",
      "title": "The CHECK Trial: A Comparison of Headache Treatment in the ED: Compazine Versus Ketamine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Headache"
      ],
      "interventions": [
        {
          "name": "Prochlorperazine",
          "type": "DRUG"
        },
        {
          "name": "Ketamine",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        },
        {
          "name": "Ondansetron",
          "type": "DRUG"
        },
        {
          "name": "Normal Saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University Medical Center of Southern Nevada",
      "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": 54,
      "start_date": "2016-03-17",
      "completion_date": "2017-03-21",
      "has_results": true,
      "last_update_posted_date": "2017-12-11",
      "last_synced_at": "2026-10-09T14:03:54.430Z",
      "location_count": 1,
      "location_summary": "Las Vegas, Nevada",
      "locations": [
        {
          "city": "Las Vegas",
          "state": "Nevada"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02657031"
    }
  ]
}