{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=extended-release+naltrexone+%28XR-NTX%29",
    "query": {
      "intervention": "extended-release naltrexone (XR-NTX)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 26,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=extended-release+naltrexone+%28XR-NTX%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-02T15:30:09.305Z",
  "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": "NCT04408313",
      "title": "Extended Release Naltrexone Versus Extended Release Buprenorphine With Individuals Leaving Jail",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Opioid-use Disorder"
      ],
      "interventions": [
        {
          "name": "XR-B",
          "type": "DRUG"
        },
        {
          "name": "XR-NTX",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Friends Research Institute, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 240,
      "start_date": "2020-10-28",
      "completion_date": "2026-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-05",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04408313"
    },
    {
      "nct_id": "NCT01843023",
      "title": "Extended Release Naltrexone for Opioid-Dependent Youth",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Drug Dependence"
      ],
      "interventions": [
        {
          "name": "Extended Release Naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Psychosocial Treatment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Buprenorphine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "Friends Research Institute, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "15 Years to 21 Years"
      },
      "enrollment_count": 288,
      "start_date": "2013-06",
      "completion_date": "2019-07",
      "has_results": true,
      "last_update_posted_date": "2021-11-10",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01843023"
    },
    {
      "nct_id": "NCT01908062",
      "title": "Comparing Treatments for HIV-Infected Opioid and Alcohol Users in an Integrated Care Effectiveness Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Opioid Use Disorder",
        "Alcohol Use Disorder"
      ],
      "interventions": [
        {
          "name": "Extended Release Naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Treatment As usual",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 51,
      "start_date": "2014-06",
      "completion_date": "2015-03",
      "has_results": true,
      "last_update_posted_date": "2019-03-19",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01908062"
    },
    {
      "nct_id": "NCT04173416",
      "title": "The Youth Opioid Recovery Support (YORS) Intervention",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Opioid-use Disorder",
        "Medication Adherence"
      ],
      "interventions": [
        {
          "name": "Youth Opioid Recovery Support (YORS)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Potomac Health Foundations",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "28 Years",
        "sex": "ALL",
        "summary": "18 Years to 28 Years"
      },
      "enrollment_count": 150,
      "start_date": "2020-02-17",
      "completion_date": "2026-08-31",
      "has_results": false,
      "last_update_posted_date": "2025-09-24",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04173416"
    },
    {
      "nct_id": "NCT01180647",
      "title": "Extended-Release Naltrexone for Opioid Relapse Prevention Following Release From Jail",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Opiate Dependence"
      ],
      "interventions": [
        {
          "name": "Extended-Release Naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Motivational Enhancement Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "NYU Langone Health",
      "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": 48,
      "start_date": "2010-05",
      "completion_date": "2013-07",
      "has_results": true,
      "last_update_posted_date": "2016-04-07",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "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/NCT01180647"
    },
    {
      "nct_id": "NCT04480554",
      "title": "Anti-retroviral Therapy, Medications for Opioid Use Disorder, Opioids and HIV Infection - Study 1",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Opioid-use Disorder",
        "HIV-1-infection",
        "Immune Activation",
        "Inflammation",
        "Methadone",
        "Buprenorphine",
        "Naltrexone",
        "Antiretroviral Treatment"
      ],
      "interventions": [
        {
          "name": "Methadone",
          "type": "DRUG"
        },
        {
          "name": "Buprenorphine/naloxone",
          "type": "DRUG"
        },
        {
          "name": "XR-Naltrexone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "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": 78,
      "start_date": "2023-01-30",
      "completion_date": "2025-06-30",
      "has_results": true,
      "last_update_posted_date": "2026-04-07",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04480554"
    },
    {
      "nct_id": "NCT04309565",
      "title": "Transitions Clinic Network: Post Incarceration Addiction Treatment, Healthcare, and Social Support",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Opioid Addiction"
      ],
      "interventions": [
        {
          "name": "Transitions Clinic Network Primary Care",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Standard Primary Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 398,
      "start_date": "2021-04-21",
      "completion_date": "2025-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-12",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 4,
      "location_summary": "New Haven, Connecticut • Minneapolis, Minnesota • The Bronx, New York + 1 more",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04309565"
    },
    {
      "nct_id": "NCT01982643",
      "title": "Accelerated Development of Additive Pharmacotherapy Treatment for Methamphetamine Use Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Methamphetamine Use Disorder"
      ],
      "interventions": [
        {
          "name": "naltrexone plus bupropion",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Walter Ling",
      "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": 49,
      "start_date": "2013-11",
      "completion_date": "2015-02",
      "has_results": true,
      "last_update_posted_date": "2020-03-23",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 3,
      "location_summary": "Los Angeles, California • Honolulu, Hawaii • Dallas, Texas",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01982643"
    },
    {
      "nct_id": "NCT01449565",
      "title": "Extended-Release Naltrexone to Treat Methamphetamine Dependence in Men Who Have Sex With Men (MSM)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Amphetamine-Related Disorders"
      ],
      "interventions": [
        {
          "name": "Naltrexone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "San Francisco Department of Public Health",
      "sponsor_class": "OTHER_GOV",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "18 Years to 65 Years · Male only"
      },
      "enrollment_count": 100,
      "start_date": "2012-09",
      "completion_date": "2016-03",
      "has_results": false,
      "last_update_posted_date": "2016-04-13",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01449565"
    },
    {
      "nct_id": "NCT02478489",
      "title": "Alcohol Disorder hOsPital Treatment Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Heavy Drinking",
        "Alcohol Dependence",
        "Alcohol Use Disorder"
      ],
      "interventions": [
        {
          "name": "Oral naltrexone (PO-NTX)",
          "type": "DRUG"
        },
        {
          "name": "Extended-release injectable naltrexone (XR-NTX)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boston University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 248,
      "start_date": "2016-06",
      "completion_date": "2020-10",
      "has_results": true,
      "last_update_posted_date": "2021-06-29",
      "last_synced_at": "2026-10-02T15:30:09.305Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02478489"
    }
  ]
}