{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Opioid+Induced+Constipation+%28OIC%29",
    "query": {
      "condition": "Opioid Induced Constipation (OIC)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 58,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Opioid+Induced+Constipation+%28OIC%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T07:11:36.250Z",
  "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": "NCT02745353",
      "title": "Naloxegol in Cancer Opioid-Induced Constipation",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Constipation"
      ],
      "interventions": [
        {
          "name": "naloxegol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Joseph Ma",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2016-05",
      "completion_date": "2017-06-22",
      "has_results": true,
      "last_update_posted_date": "2019-12-09",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02745353"
    },
    {
      "nct_id": "NCT01004393",
      "title": "Methylnaltrexone for Opioid-induced Constipation in Cancer Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Neoplasms",
        "Constipation",
        "Opioid-Related Disorders"
      ],
      "interventions": [
        {
          "name": "Methylnaltrexone bromide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2009-10",
      "completion_date": "2013-12",
      "has_results": true,
      "last_update_posted_date": "2016-02-02",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 1,
      "location_summary": "Burlington, Vermont",
      "locations": [
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01004393"
    },
    {
      "nct_id": "NCT01382797",
      "title": "ALK37-005: A Study of ALKS 37 (RDC-1036) in Adults With Opioid-induced Constipation (OIC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Opioid-induced Constipation"
      ],
      "interventions": [
        {
          "name": "ALKS 37",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Alkermes, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 157,
      "start_date": "2011-08",
      "completion_date": "2012-04",
      "has_results": false,
      "last_update_posted_date": "2012-06-13",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 20,
      "location_summary": "Mesa, Arizona • Phoenix, Arizona • National City, California + 17 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "National City",
          "state": "California"
        },
        {
          "city": "Oceanside",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01382797"
    },
    {
      "nct_id": "NCT01655771",
      "title": "TD-1211 Single-Dose Study in Elderly and Young Healthy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Constipation"
      ],
      "interventions": [
        {
          "name": "TD-1211 Dose 1",
          "type": "DRUG"
        },
        {
          "name": "TD-1211 Dose 2",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Glycyx Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 47,
      "start_date": "2012-08",
      "completion_date": "2013-03",
      "has_results": false,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01655771"
    },
    {
      "nct_id": "NCT01418092",
      "title": "ALK37-007: Evaluation of Safety and Efficacy of ALKS 37 (RDC-1036) in Adults With Opioid-induced Constipation (OIC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "OIC"
      ],
      "interventions": [
        {
          "name": "ALKS 37",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Alkermes, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 91,
      "start_date": "2011-09",
      "completion_date": "2012-06",
      "has_results": false,
      "last_update_posted_date": "2012-08-07",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 13,
      "location_summary": "Anaheim, California • Orange, California • Daytona Beach, Florida + 10 more",
      "locations": [
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Daytona Beach",
          "state": "Florida"
        },
        {
          "city": "Plantation",
          "state": "Florida"
        },
        {
          "city": "Marietta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01418092"
    },
    {
      "nct_id": "NCT01965652",
      "title": "Long Term Safety of Naldemedine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Opioid-induced Constipation"
      ],
      "interventions": [
        {
          "name": "Naldemedine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Shionogi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 1246,
      "start_date": "2013-09-24",
      "completion_date": "2016-01-12",
      "has_results": true,
      "last_update_posted_date": "2018-04-18",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 99,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Chandler, Arizona + 96 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Goodyear",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01965652"
    },
    {
      "nct_id": "NCT00529087",
      "title": "Study Evaluating Subcutaneous MOA-728 for the Treatment of Opioid-Induced Constipation (OIC) in Subjects With Chronic Non-Malignant Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Constipation"
      ],
      "interventions": [
        {
          "name": "N-methylnaltrexone bromide (MOA-728)",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Bausch Health Americas, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 460,
      "start_date": "2007-08",
      "completion_date": "2008-12",
      "has_results": true,
      "last_update_posted_date": "2019-11-25",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 78,
      "location_summary": "Mobile, Alabama • Sun City, Arizona • Tucson, Arizona + 69 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Sun City",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00529087"
    },
    {
      "nct_id": "NCT04930237",
      "title": "RELISTOR's Effects on Opioid-Induced Constipation",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "OIC"
      ],
      "interventions": [
        {
          "name": "Relistor Injectable Product",
          "type": "DRUG"
        },
        {
          "name": "Docusate Calcium",
          "type": "DRUG"
        },
        {
          "name": "Bisacodyl",
          "type": "DRUG"
        },
        {
          "name": "Milk of magnesia",
          "type": "DRUG"
        },
        {
          "name": "Magnesium citrate",
          "type": "DRUG"
        },
        {
          "name": "Senna",
          "type": "DRUG"
        },
        {
          "name": "Enema",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Methodist Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2021-07-01",
      "completion_date": "2022-04-22",
      "has_results": false,
      "last_update_posted_date": "2026-03-23",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04930237"
    },
    {
      "nct_id": "NCT00858754",
      "title": "Study Evaluating Safety & Efficacy of Subcutaneous Methylnaltrexone on Opioid-Induced Constipation in Cancer Subjects",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Opioid-Induced Constipation"
      ],
      "interventions": [
        {
          "name": "methylnaltrexone",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bausch Health Americas, Inc.",
      "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": 0,
      "start_date": "2009-03",
      "completion_date": "2009-08",
      "has_results": false,
      "last_update_posted_date": "2019-11-29",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 4,
      "location_summary": "Laguna Hills, California • Lancaster, California • Flat Rock, North Carolina + 1 more",
      "locations": [
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Lancaster",
          "state": "California"
        },
        {
          "city": "Flat Rock",
          "state": "North Carolina"
        },
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00858754"
    },
    {
      "nct_id": "NCT02813356",
      "title": "Naloxegol US PMR CV Safety.",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Opioid Induced Constipation"
      ],
      "interventions": [
        {
          "name": "naloxegol",
          "type": "DRUG"
        },
        {
          "name": "non-PAMORA",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Valinor Pharma LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 8800,
      "start_date": "2016-06-24",
      "completion_date": "2023-12-31",
      "has_results": false,
      "last_update_posted_date": "2023-05-15",
      "last_synced_at": "2026-07-23T07:11:36.250Z",
      "location_count": 2,
      "location_summary": "Wilmington, Delaware • Hines, Illinois",
      "locations": [
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Hines",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02813356"
    }
  ]
}