{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+block",
    "query": {
      "intervention": "Placebo block"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 541,
    "total_pages": 55,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+block&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T10:49:07.145Z",
  "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": "NCT02483559",
      "title": "Seeing the World Through Assorted Glasses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep"
      ],
      "interventions": [
        {
          "name": "Amber Lenses",
          "type": "OTHER"
        },
        {
          "name": "Placebo Lenses",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "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": 15,
      "start_date": "2015-06",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2017-02-08",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02483559"
    },
    {
      "nct_id": "NCT04381468",
      "title": "SEMA4D Blockade Safety and Brain Metabolic Activity in Alzheimer's Disease (AD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Alzheimer Disease"
      ],
      "interventions": [
        {
          "name": "Pepinemab",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vaccinex Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "55 Years to 85 Years"
      },
      "enrollment_count": 50,
      "start_date": "2021-07-22",
      "completion_date": "2024-06-05",
      "has_results": false,
      "last_update_posted_date": "2024-08-22",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 14,
      "location_summary": "San Diego, California • Washington D.C., District of Columbia • Delray Beach, Florida + 11 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Delray Beach",
          "state": "Florida"
        },
        {
          "city": "Fort Myers",
          "state": "Florida"
        },
        {
          "city": "Lake Worth",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04381468"
    },
    {
      "nct_id": "NCT02121392",
      "title": "Epidural Catheter With or Without Adductor Canal Nerve Block for Postoperative Analgesia Following Total Knee Arthroplasty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Arthroplasty, Replacement, Knee",
        "Nerve Block"
      ],
      "interventions": [
        {
          "name": "Adductor Canal Nerve Block Catheter",
          "type": "DEVICE"
        },
        {
          "name": "Adductor Canal Nerve Block Sham Catheter",
          "type": "DEVICE"
        },
        {
          "name": "Bupivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "Up to 85 Years"
      },
      "enrollment_count": 165,
      "start_date": "2014-10",
      "completion_date": "2017-01",
      "has_results": true,
      "last_update_posted_date": "2020-10-20",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02121392"
    },
    {
      "nct_id": "NCT03823534",
      "title": "Post-Op Pain Control for Prophylactic Intramedullary Nailing.",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Bone Metastases",
        "Lymphoma",
        "Multiple Myeloma",
        "Opioid Use",
        "Pain"
      ],
      "interventions": [
        {
          "name": "Ketorolac",
          "type": "DRUG"
        },
        {
          "name": "Normal saline",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Morphine",
          "type": "DRUG"
        },
        {
          "name": "Hydrocodone/Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "St. Louis University",
      "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": "2019-02-20",
      "completion_date": "2027-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-22",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03823534"
    },
    {
      "nct_id": "NCT05034536",
      "title": "PD-1 Antibody Therapy + Infliximab for Metastatic Melanoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Melanoma"
      ],
      "interventions": [
        {
          "name": "Pembrolizumab",
          "type": "DRUG"
        },
        {
          "name": "Infliximab",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Relatlimab",
          "type": "DRUG"
        },
        {
          "name": "Nivolumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 36,
      "start_date": "2022-02-07",
      "completion_date": "2028-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-24",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05034536"
    },
    {
      "nct_id": "NCT07079761",
      "title": "Facilitation of Extinction Retention and Reconsolidation Blockade by IV Allopregnanolone in PTSD.",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Post Traumatic Stress Disorder"
      ],
      "interventions": [
        {
          "name": "Experiment 1. Three-day aversive conditioning, extinction, and extinction retention testing paradigm",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Allopregnanolone (Allo) with 6% USP Dexolve (sulfobutyl ether-beta-cyclodextrin sodium salt) in 0.9% saline for IV infusion will be provided by the University of California, Davis, GMP manufacturer.",
          "type": "DRUG"
        },
        {
          "name": "Matching IV Placebo",
          "type": "OTHER"
        },
        {
          "name": "Experiment 2. Three-day aversive conditioning, reconsolidation blockade, and testing paradigm",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 96,
      "start_date": "2025-08-04",
      "completion_date": "2027-04-30",
      "has_results": false,
      "last_update_posted_date": "2025-11-05",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07079761"
    },
    {
      "nct_id": "NCT02005575",
      "title": "The Effect of Dexamethasone on the Duration and Functionality of Bupivacaine Intercostal Nerve Blockade",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Post Minimally Invasive Thorascopic Surgical Pain"
      ],
      "interventions": [
        {
          "name": "Bupivacaine and Dexamethasone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cedars-Sinai Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 50,
      "start_date": "2013-10",
      "completion_date": "2015-03",
      "has_results": false,
      "last_update_posted_date": "2015-02-04",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02005575"
    },
    {
      "nct_id": "NCT02383979",
      "title": "Perioperative Mirror Therapy and Phantom Limb Pain",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Phantom Limb Pain",
        "Phantom Pain",
        "Phantom Sensation",
        "Pseudomelia"
      ],
      "interventions": [
        {
          "name": "Sham (Comparator) Plasma Ball",
          "type": "DEVICE"
        },
        {
          "name": "Mirror",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "United States Naval Medical Center, San Diego",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "18 Years to 30 Years"
      },
      "enrollment_count": 115,
      "start_date": "2010-08",
      "completion_date": "2019-08",
      "has_results": false,
      "last_update_posted_date": "2019-08-28",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02383979"
    },
    {
      "nct_id": "NCT01826851",
      "title": "Parasternal Nerve Block in Cardiac Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Coronary Artery Disease",
        "Pain, Postoperative"
      ],
      "interventions": [
        {
          "name": "Exparel",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Peter A Knight",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 79,
      "start_date": "2013-03",
      "completion_date": "2017-06",
      "has_results": true,
      "last_update_posted_date": "2018-08-01",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01826851"
    },
    {
      "nct_id": "NCT03797001",
      "title": "Interleukin-1 Blockade In Recently Decompensated Heart Failure - 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Heart Failure, Systolic",
        "Inflammation"
      ],
      "interventions": [
        {
          "name": "Anakinra",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 102,
      "start_date": "2019-01-04",
      "completion_date": "2024-07-22",
      "has_results": true,
      "last_update_posted_date": "2025-08-06",
      "last_synced_at": "2026-09-03T10:49:07.145Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03797001"
    }
  ]
}