{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Masked+Placebo",
    "query": {
      "intervention": "Masked Placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 865,
    "total_pages": 87,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Masked+Placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T07:56:25.718Z",
  "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": "NCT00419263",
      "title": "Evaluation of the Efficacy and Safety of Peramivir in Subjects With Uncomplicated Acute Influenza.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Peramivir 150 mg",
          "type": "DRUG"
        },
        {
          "name": "Peramivir 300 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "BioCryst Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 344,
      "start_date": "2007-01",
      "completion_date": "2007-09",
      "has_results": true,
      "last_update_posted_date": "2015-02-12",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 58,
      "location_summary": "Birmingham, Alabama • Jonesboro, Arkansas • Anaheim, California + 45 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Carmichael",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00419263"
    },
    {
      "nct_id": "NCT03981549",
      "title": "Treatment of Central Retinal Vein Occlusion Using Stem Cells Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Central Retinal Vein Occlusion"
      ],
      "interventions": [
        {
          "name": "Autologous Bone Marrow CD34+ Stem Cells",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sham Therapy",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "The Emmes Company, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2019-10-22",
      "completion_date": "2023-11-09",
      "has_results": true,
      "last_update_posted_date": "2024-12-02",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 1,
      "location_summary": "Sacramento, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03981549"
    },
    {
      "nct_id": "NCT00882687",
      "title": "Efficacy Study to Evaluate the Effectiveness of 3 Concentrations of SAR 1118 in Allergic Conjunctivitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Allergic Conjunctivitis"
      ],
      "interventions": [
        {
          "name": "Lifitegrast",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2009-04-24",
      "completion_date": "2009-05-10",
      "has_results": true,
      "last_update_posted_date": "2021-06-11",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 1,
      "location_summary": "Andover, Massachusetts",
      "locations": [
        {
          "city": "Andover",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00882687"
    },
    {
      "nct_id": "NCT04072887",
      "title": "Dose-range Finding Efficacy and Safety Study for QBW251 in COPD Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive"
      ],
      "interventions": [
        {
          "name": "QBW251",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "COPD maintenance background therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 974,
      "start_date": "2019-09-12",
      "completion_date": "2022-02-01",
      "has_results": true,
      "last_update_posted_date": "2023-04-28",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 25,
      "location_summary": "Andalusia, Alabama • Los Angeles, California • Westminster, California + 22 more",
      "locations": [
        {
          "city": "Andalusia",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Westminster",
          "state": "California"
        },
        {
          "city": "Ormond Beach",
          "state": "Florida"
        },
        {
          "city": "Sarasota",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04072887"
    },
    {
      "nct_id": "NCT04556838",
      "title": "Study of VVN001 Ophthalmic Solution in Dry Eye Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Dry Eye"
      ],
      "interventions": [
        {
          "name": "VVN001 Ophthalmic Solution 1%",
          "type": "DRUG"
        },
        {
          "name": "VVN001 Ophthalmic Solution 5%",
          "type": "DRUG"
        },
        {
          "name": "Vehicle",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VivaVision Biotech, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 169,
      "start_date": "2020-12-03",
      "completion_date": "2021-12-01",
      "has_results": true,
      "last_update_posted_date": "2023-12-13",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04556838"
    },
    {
      "nct_id": "NCT00244543",
      "title": "Evaluation of Efficacy of Ophthalmic Solution in Induced Allergic Conjunctivitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Allergic Conjunctivitis"
      ],
      "interventions": [
        {
          "name": "R89674 (generic name not yet established)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vistakon Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "10 Years and older"
      },
      "enrollment_count": 110,
      "start_date": "2005-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2011-09-27",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 1,
      "location_summary": "North Andover, Massachusetts",
      "locations": [
        {
          "city": "North Andover",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00244543"
    },
    {
      "nct_id": "NCT04912115",
      "title": "Randomized, Double-Blind, Active Placebo-Controlled Study of Ketamine to Treat Levodopa-Induced Dyskinesia",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Dyskinesias",
        "Movement Disorders",
        "Central Nervous System Diseases",
        "Nervous System Diseases",
        "Neurologic Manifestations"
      ],
      "interventions": [
        {
          "name": "Ketamine",
          "type": "DRUG"
        },
        {
          "name": "Midazolam",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "PharmaTher Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "30 Years to 85 Years"
      },
      "enrollment_count": 30,
      "start_date": "2021-10-05",
      "completion_date": "2024-03-30",
      "has_results": false,
      "last_update_posted_date": "2023-11-18",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 7,
      "location_summary": "Tucson, Arizona • Chula Vista, California • Fountain Valley, California + 3 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04912115"
    },
    {
      "nct_id": "NCT07435610",
      "title": "Acupuncture Therapy for Pediatric Disorders of Gut-Brain Interaction",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Disorders of Gut-brain Interaction"
      ],
      "interventions": [
        {
          "name": "Active Therapeutic acupuncture intervention",
          "type": "OTHER"
        },
        {
          "name": "Sham therapeutic acupuncture treatment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's Hospital of Orange County",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "8 Years to 17 Years"
      },
      "enrollment_count": 96,
      "start_date": "2026-01-08",
      "completion_date": "2028-01",
      "has_results": false,
      "last_update_posted_date": "2026-06-05",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 1,
      "location_summary": "Irvine, California",
      "locations": [
        {
          "city": "Irvine",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07435610"
    },
    {
      "nct_id": "NCT04638660",
      "title": "Safety and Efficacy of Nyxol (0.75% Phentolamine Ophthalmic Solution) in Subjects With Dim Light Vision Disturbances",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Dim Light Vision Disturbances"
      ],
      "interventions": [
        {
          "name": "Phentolamine Ophthalmic Solution 0.75%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Ophthalmic Solution Vehicle (Placebo)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 144,
      "start_date": "2020-12-30",
      "completion_date": "2022-05-19",
      "has_results": true,
      "last_update_posted_date": "2025-10-14",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 17,
      "location_summary": "Newport Beach, California • Petaluma, California • Jacksonville, Florida + 12 more",
      "locations": [
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Petaluma",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Pittsburg",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04638660"
    },
    {
      "nct_id": "NCT02855450",
      "title": "Study to Evaluate Safety and Efficacy of rhNGF Eye Drops Solution Versus Vehicle in Patients With Glaucoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "rhNGF",
          "type": "DRUG"
        },
        {
          "name": "Vehicle",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Dompé Farmaceutici S.p.A",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 60,
      "start_date": "2016-12",
      "completion_date": "2018-05",
      "has_results": true,
      "last_update_posted_date": "2020-11-25",
      "last_synced_at": "2026-09-05T07:56:25.718Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02855450"
    }
  ]
}