{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Opioid+Induced+Constipation&page=2",
    "query": {
      "condition": "Opioid Induced Constipation",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Opioid+Induced+Constipation&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-07-22T10:55:53.635Z",
  "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": "NCT01040637",
      "title": "A Multiple Dose Study of TD-1211 in Healthy Volunteers and Patients With Opioid-Induced Constipation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Healthy",
        "Opioid-induced Constipation"
      ],
      "interventions": [
        {
          "name": "TD-1211",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Glycyx Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 102,
      "start_date": "2010-01",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-07-22T10:55:53.635Z",
      "location_count": 3,
      "location_summary": "Pasadena, California • San Antonio, Texas • Salt Lake City, Utah",
      "locations": [
        {
          "city": "Pasadena",
          "state": "California"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01040637"
    },
    {
      "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": "2026-07-22T10:55:53.635Z",
      "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": "NCT01702194",
      "title": "TD-1211 IV/Oral Mass Balance Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "OIC"
      ],
      "interventions": [
        {
          "name": "TD-1211 IV [C14]",
          "type": "DRUG"
        },
        {
          "name": "TD-1211 PO [C14]",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Glycyx Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "MALE",
        "summary": "18 Years to 50 Years · Male only"
      },
      "enrollment_count": 10,
      "start_date": "2012-11",
      "completion_date": "2013-03",
      "has_results": false,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-07-22T10:55:53.635Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01702194"
    },
    {
      "nct_id": "NCT01384292",
      "title": "Assessment of Efficacy and Safety in Relieving Opioid-induced Constipation in Patients With Cancer-related Pain",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Opioid-Induced Constipation"
      ],
      "interventions": [
        {
          "name": "NKTR-118",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2011-06",
      "completion_date": "2012-09",
      "has_results": true,
      "last_update_posted_date": "2015-06-01",
      "last_synced_at": "2026-07-22T10:55:53.635Z",
      "location_count": 81,
      "location_summary": "Huntsville, Alabama • Casa Grande, Arizona • Phoenix, Arizona + 78 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Casa Grande",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fort Smith",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01384292"
    },
    {
      "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": "2026-07-22T10:55:53.635Z",
      "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": "NCT00600119",
      "title": "A Phase 2, Double-Blind, Multiple-Dose Escalation Study to Evaluate NKTR-118 (Oral PEG-Naloxol) in Patients With Opioid-Induced Constipation (OIC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Opioid Induced Constipation (OIC)"
      ],
      "interventions": [
        {
          "name": "placebo",
          "type": "DRUG"
        },
        {
          "name": "NKTR-118",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 207,
      "start_date": "2007-12",
      "completion_date": "2009-04",
      "has_results": true,
      "last_update_posted_date": "2015-06-12",
      "last_synced_at": "2026-07-22T10:55:53.635Z",
      "location_count": 33,
      "location_summary": "Huntsville, Alabama • Pinson, Alabama • Tucson, Arizona + 30 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Pinson",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00600119"
    },
    {
      "nct_id": "NCT03060512",
      "title": "To Evaluate Patient Preference of Movantik and Polyethylene Glycol 3350 for Opioid Induced Constipation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Opioid Induced Constipation"
      ],
      "interventions": [
        {
          "name": "Polyethylene Glycol 3350",
          "type": "DRUG"
        },
        {
          "name": "Movantik",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "84 Years",
        "sex": "ALL",
        "summary": "18 Years to 84 Years"
      },
      "enrollment_count": 276,
      "start_date": "2017-03-02",
      "completion_date": "2017-08-23",
      "has_results": true,
      "last_update_posted_date": "2018-07-13",
      "last_synced_at": "2026-07-22T10:55:53.635Z",
      "location_count": 53,
      "location_summary": "Huntsville, Alabama • Phoenix, Arizona • Anaheim, California + 46 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03060512"
    },
    {
      "nct_id": "NCT00620061",
      "title": "Opioid-induced Bowel Dysfunction: Long-Term Assessment of Lubiprostone",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Opioid-Induced Bowel Dysfunction"
      ],
      "interventions": [
        {
          "name": "Lubiprostone 24",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sucampo Pharma Americas, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 439,
      "start_date": "2007-12",
      "completion_date": "2009-09",
      "has_results": true,
      "last_update_posted_date": "2020-01-21",
      "last_synced_at": "2026-07-22T10:55:53.635Z",
      "location_count": 120,
      "location_summary": "Birmingham, Alabama • Hueytown, Alabama • Mobile, Alabama + 95 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Hueytown",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00620061"
    },
    {
      "nct_id": "NCT01122030",
      "title": "Study to Evaluate the Safety and Efficacy of Naldemedine (S-297995) for the Treatment of Opioid-Induced Bowel Dysfunction in Subjects With Chronic Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Opioid Induced Bowel Dysfunction"
      ],
      "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": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 72,
      "start_date": "2010-05-19",
      "completion_date": "2011-03-22",
      "has_results": true,
      "last_update_posted_date": "2017-05-30",
      "last_synced_at": "2026-07-22T10:55:53.635Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01122030"
    },
    {
      "nct_id": "NCT00135577",
      "title": "Study 767905/008 Extension Study: Alvimopan for Treatment of Opioid-Induced Bowel Dysfunction in Cancer Pain Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cancer",
        "Bowel Dysfunction"
      ],
      "interventions": [
        {
          "name": "alvimopan",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)",
      "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": "2004-09",
      "completion_date": "2007-04",
      "has_results": false,
      "last_update_posted_date": "2015-09-02",
      "last_synced_at": "2026-07-22T10:55:53.635Z",
      "location_count": 14,
      "location_summary": "Duarte, California • Fountain Valley, California • La Verne, California + 11 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "La Verne",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00135577"
    }
  ]
}