{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=paricalcitol+capsules",
    "query": {
      "intervention": "paricalcitol capsules"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 19,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=paricalcitol+capsules&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T16:38:47.247Z",
  "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": "NCT01138475",
      "title": "Trial Of Paricalcitol and Cholecalciferol(Vitamin D3) in the Treatment Of Secondary Hyperparathyroidism in Patients After ROUX-EN-Y Gastric Bypass Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Gastric Bypass",
        "Parathyroid Hormone"
      ],
      "interventions": [
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "Cholecalciferol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Kerstyn C. Zalesin, M.D.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 49,
      "start_date": "2010-07",
      "completion_date": "2015-08",
      "has_results": true,
      "last_update_posted_date": "2017-03-22",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 1,
      "location_summary": "Royal Oak, Michigan",
      "locations": [
        {
          "city": "Royal Oak",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01138475"
    },
    {
      "nct_id": "NCT00048438",
      "title": "Safety and Efficacy of Zemplar Capsule in Reducing Serum IPTH Levels in Chronic Kidney Disease Subjects (Three Times Weekly)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Renal Insufficiency, Chronic"
      ],
      "interventions": [
        {
          "name": "paricalcitol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abbott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 68,
      "start_date": "2002-02",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2006-08-15",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 17,
      "location_summary": "Orange, California • Thornton, Colorado • Hudson, Florida + 14 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Thornton",
          "state": "Colorado"
        },
        {
          "city": "Hudson",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00048438"
    },
    {
      "nct_id": "NCT00977080",
      "title": "Evaluation of the Effectiveness of Paricalcitol Versus Cinacalcet With Low-Dose Vitamin D",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Chronic Kidney Disease",
        "Secondary Hyperparathyroidism",
        "Hemodialysis"
      ],
      "interventions": [
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "Cinacalcet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abbott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 272,
      "start_date": "2009-11",
      "completion_date": "2011-05",
      "has_results": true,
      "last_update_posted_date": "2012-06-20",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 30,
      "location_summary": "Tempe, Arizona • Chula Vista, California • Los Angeles, California + 22 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00977080"
    },
    {
      "nct_id": "NCT01134315",
      "title": "Study to Evaluate Safety of Vitamin D Receptor Activators in Patients Ages 0 to 16 With Chronic Kidney Disease Stage 5 Receiving Peritoneal Dialysis Within Current Clinical Practice",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Secondary Hyperparathyroidism",
        "End-Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "Calcitriol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AbbVie (prior sponsor, Abbott)",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "16 Years",
        "sex": "ALL",
        "summary": "Up to 16 Years"
      },
      "enrollment_count": 61,
      "start_date": "2010-06",
      "completion_date": "2012-05",
      "has_results": true,
      "last_update_posted_date": "2013-08-13",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 18,
      "location_summary": "Birmingham, Alabama • Gainesville, Florida • Orlando, Florida + 15 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01134315"
    },
    {
      "nct_id": "NCT00048451",
      "title": "Safety and Efficacy of Zemplar Capsule in Reducing Serum iPTH Levels in Chronic Kidney Disease Subjects (Three Times Weekly)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Renal Insufficiency, Chronic"
      ],
      "interventions": [
        {
          "name": "paricalcitol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abbott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 68,
      "start_date": "2002-02",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2006-08-02",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 18,
      "location_summary": "Tucson, Arizona • Pasadena, California • San Diego, California + 15 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Pasadena",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Tarzana",
          "state": "California"
        },
        {
          "city": "Waterbury",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00048451"
    },
    {
      "nct_id": "NCT00634582",
      "title": "Paricalcitol in Treating Patients With Advanced Prostate Cancer and Bone Metastases",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Cancer",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "immunoenzyme technique",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "dual x-ray absorptometry",
          "type": "PROCEDURE"
        },
        {
          "name": "quality-of-life assessment",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "MALE",
        "summary": "18 Years to 120 Years · Male only"
      },
      "enrollment_count": 2,
      "start_date": "2009-01",
      "completion_date": "2015-06",
      "has_results": true,
      "last_update_posted_date": "2018-07-06",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00634582"
    },
    {
      "nct_id": "NCT03588884",
      "title": "Repeated-dose Safety, Efficacy, Pharmacokinetic and Pharmacodynamic of CTAP101, Immediate-release Calcifediol, High-dose Cholecalciferol, and Paricalcitol Plus Low-dose Cholecalciferol in Patients With Secondary Hyperparathyroidism, Chronic Kidney Disease 3-4 and Vitamin D Insufficiency",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Secondary Hyperparathyroidism Due to Renal Causes",
        "Vitamin D Insufficiency",
        "CKD Stage 3",
        "CKD Stage 4"
      ],
      "interventions": [
        {
          "name": "Calcifediol Oral Capsule",
          "type": "DRUG"
        },
        {
          "name": "Calcifediol Oral Product",
          "type": "DRUG"
        },
        {
          "name": "Cholecalciferol",
          "type": "DRUG"
        },
        {
          "name": "Paricalcitol Oral Capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "OPKO Health, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 69,
      "start_date": "2018-06-08",
      "completion_date": "2020-04-24",
      "has_results": true,
      "last_update_posted_date": "2022-12-09",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 3,
      "location_summary": "Garden Grove, California • Chicago, Illinois • West Bend, Wisconsin",
      "locations": [
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "West Bend",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03588884"
    },
    {
      "nct_id": "NCT01630408",
      "title": "The Effects of Active VItamin D on Left Atrial Volume Index",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "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": "2014-03",
      "completion_date": "2014-06",
      "has_results": false,
      "last_update_posted_date": "2013-08-16",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01630408"
    },
    {
      "nct_id": "NCT02018133",
      "title": "Identification of Markers for Determining the Efficacy of Vitamin D Receptor Activator Therapy in Stage 3/4 CKD Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "CKD Stage 3/4"
      ],
      "interventions": [
        {
          "name": "Vitamin D 2mg daily for 2 weeks oral paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Illinois at Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 8,
      "start_date": "2009-12",
      "completion_date": "2012-06",
      "has_results": false,
      "last_update_posted_date": "2020-08-17",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02018133"
    },
    {
      "nct_id": "NCT00417612",
      "title": "Effectiveness of Paricalcitol in Reducing Parathyroid Hormone (PTH) Levels in X-linked Hypophosphatemic Rickets",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypophosphatemia, Familial",
        "Hyperparathyroidism"
      ],
      "interventions": [
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "9 Years and older"
      },
      "enrollment_count": 33,
      "start_date": "2007-01",
      "completion_date": "2012-08",
      "has_results": true,
      "last_update_posted_date": "2020-03-17",
      "last_synced_at": "2026-09-05T16:38:47.247Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00417612"
    }
  ]
}