{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+%28for+Naltrexone%29&page=5",
    "query": {
      "intervention": "Placebo (for Naltrexone)",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 131,
    "total_pages": 14,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+%28for+Naltrexone%29&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+%28for+Naltrexone%29&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-10T05:36:58.079Z",
  "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": "NCT00332228",
      "title": "Behavioral Naltrexone Therapy: A Novel Treatment for Heroin Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Opiate Dependence"
      ],
      "interventions": [
        {
          "name": "depot naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Compliance enhancement (CE)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "BNT",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "New York State Psychiatric Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 125,
      "start_date": "2002-06",
      "completion_date": "2007-12",
      "has_results": false,
      "last_update_posted_date": "2012-10-26",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 2,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00332228"
    },
    {
      "nct_id": "NCT02638129",
      "title": "Naltrexone/Bupropion Cardiovascular Outcomes Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Obesity",
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Naltrexone HCl/Bupropion HCl ER",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Orexigen Therapeutics, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 67,
      "start_date": "2016-01",
      "completion_date": "2016-06",
      "has_results": true,
      "last_update_posted_date": "2017-02-27",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 139,
      "location_summary": "Alexander City, Alabama • Auburn, Alabama • Birmingham, Alabama + 136 more",
      "locations": [
        {
          "city": "Alexander City",
          "state": "Alabama"
        },
        {
          "city": "Auburn",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Campe Verde",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02638129"
    },
    {
      "nct_id": "NCT01999114",
      "title": "The Effect of Buprenorphine Delivered by Buprenorphine Transdermal System (BTDS) at Doses up to 80 Micrograms/Hour (mcg/hr) and Naltrexone on Electrocardiogram (ECG) Intervals in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "ECG Effects"
      ],
      "interventions": [
        {
          "name": "Buprenorphine transdermal patch",
          "type": "DRUG"
        },
        {
          "name": "Naltrexone tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebos (for TDS and for naltrexone and for moxifloxacin)",
          "type": "DRUG"
        },
        {
          "name": "Moxifloxacin tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Purdue Pharma LP",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 328,
      "start_date": "2012-03",
      "completion_date": "2012-10",
      "has_results": true,
      "last_update_posted_date": "2018-11-05",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01999114"
    },
    {
      "nct_id": "NCT02537574",
      "title": "Naltrexone for Use in Conjunction With Buprenorphine in Adults With Opioid Use Disorder Prior to First Dose of VIVITROL® (Naltrexone for Extended-Release Injectable Suspension)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Opioid Use Disorder"
      ],
      "interventions": [
        {
          "name": "NTX/BUP",
          "type": "DRUG"
        },
        {
          "name": "NTX/PBO-B",
          "type": "DRUG"
        },
        {
          "name": "PBO-N/PBO-B",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Alkermes, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 380,
      "start_date": "2015-08",
      "completion_date": "2017-01-09",
      "has_results": true,
      "last_update_posted_date": "2019-03-06",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 20,
      "location_summary": "Oceanside, California • Orange, California • Lauderhill, Florida + 17 more",
      "locations": [
        {
          "city": "Oceanside",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Lauderhill",
          "state": "Florida"
        },
        {
          "city": "Maitland",
          "state": "Florida"
        },
        {
          "city": "Oakland Park",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02537574"
    },
    {
      "nct_id": "NCT00793780",
      "title": "Pilot Trial of Naltrexone for Obesity in Women With Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Schizophrenia",
        "Schizoaffective Disorder"
      ],
      "interventions": [
        {
          "name": "Naltrexone 25mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 70 Years · Female only"
      },
      "enrollment_count": 24,
      "start_date": "2008-12",
      "completion_date": "2010-11",
      "has_results": true,
      "last_update_posted_date": "2016-10-06",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00793780"
    },
    {
      "nct_id": "NCT01825447",
      "title": "A Study to Characterize the Abuse Liability of Intravenous Oxycodone Alone or in Combination With Intravenous Naltrexone in Healthy, Non-Dependent, Recreational Opioid Users",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone + Naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 89,
      "start_date": "2013-07",
      "completion_date": "2013-09",
      "has_results": false,
      "last_update_posted_date": "2013-10-08",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01825447"
    },
    {
      "nct_id": "NCT03132571",
      "title": "Naltrexone-Bupropion Versus Placebo-Bupropion for Weight Loss in Schizophrenia",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia",
        "Diabetes Mellitus, Type 2",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Bupropion",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Yale University",
      "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": 5,
      "start_date": "2017-06-01",
      "completion_date": "2018-07-31",
      "has_results": true,
      "last_update_posted_date": "2019-08-07",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03132571"
    },
    {
      "nct_id": "NCT01723384",
      "title": "Intermittent Naltrexone Among Polysubstance Users",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Methamphetamine",
        "Alcohol"
      ],
      "interventions": [
        {
          "name": "Intermittent Oral Naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "MALE",
        "summary": "18 Years to 70 Years · Male only"
      },
      "enrollment_count": 30,
      "start_date": "2013-05",
      "completion_date": "2014-11",
      "has_results": true,
      "last_update_posted_date": "2019-04-23",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01723384"
    },
    {
      "nct_id": "NCT00831272",
      "title": "Pharmacogenetic Response to Naltrexone For Alcohol Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Alcohol Dependence"
      ],
      "interventions": [
        {
          "name": "naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "David Oslin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 221,
      "start_date": "2009-01-05",
      "completion_date": "2014-01-15",
      "has_results": true,
      "last_update_posted_date": "2017-05-11",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 4,
      "location_summary": "Danville, Pennsylvania • Philadelphia, Pennsylvania • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00831272"
    },
    {
      "nct_id": "NCT00667875",
      "title": "An Exploratory Study of Naltrexone Plus Aripiprazole for Alcohol Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alcohol Dependence"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Naltrexone + Aripiprazole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 65,
      "start_date": "2008-04",
      "completion_date": "2011-05",
      "has_results": true,
      "last_update_posted_date": "2017-09-29",
      "last_synced_at": "2026-10-10T05:36:58.079Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00667875"
    }
  ]
}