{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+3+cholecalciferol&page=4",
    "query": {
      "intervention": "Vitamin D 3 cholecalciferol",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 300,
    "total_pages": 30,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+3+cholecalciferol&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+3+cholecalciferol&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-11T19:11:49.796Z",
  "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": "NCT06046820",
      "title": "The ENERGY 3 Study: Evaluation of Efficacy and Safety of INZ-701 in Children With ENPP1 Deficiency",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Ectonucleotide Pyrophosphatase/Phosphodiesterase1 Deficiency",
        "Autosomal Recessive Hypophosphatemic Rickets",
        "Generalized Arterial Calcification of Infancy"
      ],
      "interventions": [
        {
          "name": "INZ-701",
          "type": "DRUG"
        },
        {
          "name": "Control Arm (Conventional Therapy)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Inozyme Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "1 Year to 12 Years"
      },
      "enrollment_count": 27,
      "start_date": "2023-11-05",
      "completion_date": "2026-08-19",
      "has_results": false,
      "last_update_posted_date": "2026-10-01",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 3,
      "location_summary": "Chicago, Illinois • Philadelphia, Pennsylvania • Fort Worth, Texas",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Fort Worth",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06046820"
    },
    {
      "nct_id": "NCT02224144",
      "title": "Bone Mass and Strength After Kidney Transplantation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "End Stage Renal Disease",
        "Kidney Transplantation",
        "Bone Loss",
        "Fractures",
        "Vascular Calcifications"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        },
        {
          "name": "Calcitriol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 61,
      "start_date": "2014-08-18",
      "completion_date": "2016-10-12",
      "has_results": true,
      "last_update_posted_date": "2025-03-07",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02224144"
    },
    {
      "nct_id": "NCT03534934",
      "title": "CT-Based Modeling of Bone Micro-Architecture and Fracture-Risk in COPD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive",
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Vital signs",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Urine Pregnancy Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Questionnaires",
          "type": "OTHER"
        },
        {
          "name": "Blood Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Duel-energy X-ray absorptiometry scan",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Multi-detector computed tomography",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Dual-energy X-ray absorptiometry scan",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Punam K Saha",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "45 Years to 90 Years"
      },
      "enrollment_count": 560,
      "start_date": "2019-02-26",
      "completion_date": "2025-03-19",
      "has_results": false,
      "last_update_posted_date": "2026-01-28",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 2,
      "location_summary": "Iowa City, Iowa • New York, New York",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03534934"
    },
    {
      "nct_id": "NCT03958409",
      "title": "Evaluation and Management of Metabolic Bone Disease in Kidney Transplant Recipients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Skeletal Anomalies",
        "Kidney Transplant; Complications"
      ],
      "interventions": [
        {
          "name": "measurements to evaluate metabolic bone disease",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "standard care",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "30 Years to 65 Years"
      },
      "enrollment_count": 8,
      "start_date": "2018-12-12",
      "completion_date": "2021-12-02",
      "has_results": false,
      "last_update_posted_date": "2023-02-28",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03958409"
    },
    {
      "nct_id": "NCT00656032",
      "title": "Vitamin D, Insulin Resistance and Inflammation in ESRD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "End Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "paricalcitol",
          "type": "OTHER"
        },
        {
          "name": "cinacalcet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Vanderbilt University",
      "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": "2008-04",
      "completion_date": "2010-01",
      "has_results": false,
      "last_update_posted_date": "2012-01-11",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00656032"
    },
    {
      "nct_id": "NCT01477034",
      "title": "Vitamin D and Adipose Tissue Inflammation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency",
        "Obesity",
        "Type 2 Diabetes Mellitus",
        "Intestinal Permeability"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Fred Hutchinson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 18,
      "start_date": "2011-11",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2014-04-04",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01477034"
    },
    {
      "nct_id": "NCT00418587",
      "title": "Vitamin D Therapy in Patients With Systemic Lupus Erythematosus (SLE)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Systemic Lupus Erythematosus"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 18,
      "start_date": "2006-12",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2018-06-18",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00418587"
    },
    {
      "nct_id": "NCT01747447",
      "title": "VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture (VITAL)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bone Density",
        "Body Composition",
        "Bone Health"
      ],
      "interventions": [
        {
          "name": "Vitamin D3 placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Fish oil placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "omega-3 fatty acids (fish oil)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 771,
      "start_date": "2012-08",
      "completion_date": "2023-08-02",
      "has_results": true,
      "last_update_posted_date": "2026-04-28",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01747447"
    },
    {
      "nct_id": "NCT07241585",
      "title": "Vitamin D Effects on Immune Microenvironment of Nonmelanoma Skin Cancer After Photodynamic Therapy (PDT)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nonmelanoma Skin Cancer",
        "Basal Cell Carcinoma",
        "Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Vitamin D (VitD)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Photodynamic therapy (PDT)",
          "type": "OTHER"
        },
        {
          "name": "Mohs surgery or electrodessication & curettage (ED&C) (standard of care)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Case Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 54,
      "start_date": "2026-02-25",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07241585"
    },
    {
      "nct_id": "NCT00511225",
      "title": "Effects of Oral Cholecalciferol (Vitamin D3) on Bone Health, Neuromuscular Function, and Quality of Life in Adults With Chronic Kidney Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "End Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 47,
      "start_date": "2007-09",
      "completion_date": "2011-09",
      "has_results": false,
      "last_update_posted_date": "2012-07-03",
      "last_synced_at": "2026-10-11T19:11:49.796Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00511225"
    }
  ]
}