{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diphenhydramine+%28Benadryl%29&page=3",
    "query": {
      "intervention": "Diphenhydramine (Benadryl)",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 488,
    "total_pages": 49,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diphenhydramine+%28Benadryl%29&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Diphenhydramine+%28Benadryl%29&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-10T16:00:54.694Z",
  "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": "NCT01216878",
      "title": "Bioequivalency Study of Losartan Potassium 100 mg Tablet Under Fed Conditions",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "losartan potassium",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Roxane Laboratories",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 40,
      "start_date": "2004-09",
      "completion_date": "2004-09",
      "has_results": false,
      "last_update_posted_date": "2018-01-23",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 1,
      "location_summary": "Springfield, Missouri",
      "locations": [
        {
          "city": "Springfield",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01216878"
    },
    {
      "nct_id": "NCT00274599",
      "title": "PROBE Investigation of the Safety & Efficacy of Telmisartan (Micardis®) vs Ramipril (Altace®) Using ABPM in HTN",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Telmisartan",
          "type": "DRUG"
        },
        {
          "name": "Ramipril",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 812,
      "start_date": "2002-10-09",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2023-12-06",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 43,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 40 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00274599"
    },
    {
      "nct_id": "NCT01678586",
      "title": "Effect of Acupuncture and Pain Medication on Radicular Pain Using QST",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "Acupuncture",
          "type": "OTHER"
        },
        {
          "name": "Sham Acupuncture",
          "type": "OTHER"
        },
        {
          "name": "Gabapentin",
          "type": "DRUG"
        },
        {
          "name": "Sham Gabapentin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "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": 56,
      "start_date": "2012-12",
      "completion_date": "2021-12",
      "has_results": true,
      "last_update_posted_date": "2024-04-23",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01678586"
    },
    {
      "nct_id": "NCT01885559",
      "title": "HALT Progression of Polycystic Kidney Disease Study B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Kidney, Polycystic"
      ],
      "interventions": [
        {
          "name": "Lisinopril",
          "type": "DRUG"
        },
        {
          "name": "Telmisartan",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "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": "15 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "15 Years to 64 Years"
      },
      "enrollment_count": 486,
      "start_date": "2006-01",
      "completion_date": "2014-06",
      "has_results": true,
      "last_update_posted_date": "2020-04-22",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 7,
      "location_summary": "Aurora, Colorado • Atlanta, Georgia • Kansas City, Kansas + 3 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01885559"
    },
    {
      "nct_id": "NCT00342888",
      "title": "Case-Control Study of Pesticides and Childhood Leukemia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Leukemia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "8 Years",
        "sex": "ALL",
        "summary": "Up to 8 Years"
      },
      "enrollment_count": 629,
      "start_date": "2001-10-30",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2026-10-08",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 1,
      "location_summary": "Berkeley, California",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00342888"
    },
    {
      "nct_id": "NCT01519297",
      "title": "Preeclampsia: A Marker for Future Cardiovascular Risk in Women",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Preeclampsia",
        "Pregnancy Induced Hypertension"
      ],
      "interventions": [
        {
          "name": "Irbesartan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 50 Years · Female only"
      },
      "enrollment_count": 150,
      "start_date": "2012-05",
      "completion_date": "2019-07",
      "has_results": false,
      "last_update_posted_date": "2019-01-17",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01519297"
    },
    {
      "nct_id": "NCT03331042",
      "title": "SM-1 vs 2 Comparators and Placebo in Participants With a History of Transient Insomnia.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Transient Insomnia"
      ],
      "interventions": [
        {
          "name": "SM-1",
          "type": "DRUG"
        },
        {
          "name": "D+Z",
          "type": "DRUG"
        },
        {
          "name": "D+L",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sequential Medicine Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 85,
      "start_date": "2017-10-09",
      "completion_date": "2018-03-22",
      "has_results": true,
      "last_update_posted_date": "2019-06-05",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia • New York, New York",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03331042"
    },
    {
      "nct_id": "NCT00446862",
      "title": "The Fabrazyme® and Arbs and ACE Inhibitor Treatment (FAACET) Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fabry Disease",
        "Proteinuria"
      ],
      "interventions": [
        {
          "name": "enalapril and other angiotensin converting enzyme inhibitors; losartan and other angiotensin receptor blockers",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "19 Years to 85 Years"
      },
      "enrollment_count": 36,
      "start_date": "2007-03",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2013-11-19",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 5,
      "location_summary": "Birmingham, Alabama • Atlanta, Georgia • Chicago, Illinois + 2 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00446862"
    },
    {
      "nct_id": "NCT02867800",
      "title": "Abatacept for GVHD Prophylaxis After Hematopoietic Stem Cell Transplantation for Pediatric Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Sickle Cell Disease",
        "Graft Versus Host Disease"
      ],
      "interventions": [
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Methylprednisolone",
          "type": "DRUG"
        },
        {
          "name": "Meperidine",
          "type": "DRUG"
        },
        {
          "name": "Alemtuzumab",
          "type": "DRUG"
        },
        {
          "name": "Thymoglobulin",
          "type": "DRUG"
        },
        {
          "name": "Fludarabine",
          "type": "DRUG"
        },
        {
          "name": "Melphalan",
          "type": "DRUG"
        },
        {
          "name": "Thiotepa",
          "type": "DRUG"
        },
        {
          "name": "Cyclosporine",
          "type": "DRUG"
        },
        {
          "name": "Tacrolimus",
          "type": "DRUG"
        },
        {
          "name": "Methotrexate",
          "type": "DRUG"
        },
        {
          "name": "Abatacept",
          "type": "DRUG"
        },
        {
          "name": "Marrow infusion",
          "type": "PROCEDURE"
        },
        {
          "name": "Sirolimus",
          "type": "DRUG"
        },
        {
          "name": "Mycophenolate Mofetil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Monica Bhatia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "3 Years to 20 Years"
      },
      "enrollment_count": 24,
      "start_date": "2016-07",
      "completion_date": "2023-12-30",
      "has_results": false,
      "last_update_posted_date": "2024-06-13",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 7,
      "location_summary": "Washington D.C., District of Columbia • Atlanta, Georgia • Chicago, Illinois + 4 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02867800"
    },
    {
      "nct_id": "NCT02295280",
      "title": "A Cost Effective Treatment for Headache in Pregnancy When Acetaminophen Alone is Ineffective.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Headache"
      ],
      "interventions": [
        {
          "name": "Metoclopramide",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        },
        {
          "name": "Codeine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "St. Louis University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "16 Years to 50 Years · Female only"
      },
      "enrollment_count": 70,
      "start_date": "2012-01",
      "completion_date": "2014-11",
      "has_results": true,
      "last_update_posted_date": "2018-04-02",
      "last_synced_at": "2026-10-10T16:00:54.694Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02295280"
    }
  ]
}