{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=cholecalciferol+%28vitamin+D%29&page=17",
    "query": {
      "intervention": "cholecalciferol (vitamin D)",
      "page": 17
    },
    "page_size": 10
  },
  "pagination": {
    "page": 17,
    "page_size": 10,
    "total_count": 960,
    "total_pages": 96,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=cholecalciferol+%28vitamin+D%29&page=18&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=cholecalciferol+%28vitamin+D%29&page=16&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-15T14:34:35.086Z",
  "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": "NCT02404870",
      "title": "Acute Effects of Canagliflozin, a Sodium Glucose Co-Transporter 2 (SGLT2) Inhibitor on Bone Metabolism in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Canagliflozin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 67,
      "start_date": "2014-09-16",
      "completion_date": "2019-09-03",
      "has_results": false,
      "last_update_posted_date": "2025-03-04",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02404870"
    },
    {
      "nct_id": "NCT02920502",
      "title": "Effect of a One Time Dose of Cholecalciferol on Serum Concentration of 25-Hydroxyvitamin D and Macrophages",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Inflammation"
      ],
      "interventions": [
        {
          "name": "Arm 2: cholecalciferol 50,000 IU",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Arm 3: cholecalciferol 100,000 IU",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Arm 4: cholecalciferol 200,000 IU",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Arm 1: Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University Hospitals Cleveland Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2013-06",
      "completion_date": "2015-08",
      "has_results": false,
      "last_update_posted_date": "2016-10-10",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02920502"
    },
    {
      "nct_id": "NCT00057031",
      "title": "Study of High-Dose Pulse Administration DN-101 (Calcitriol) in Patients With Myelodysplastic Syndrome (MDS)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Myelodysplastic Syndrome"
      ],
      "interventions": [
        {
          "name": "DN-101 (calcitriol)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novacea",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2002-11",
      "completion_date": "2004-03",
      "has_results": false,
      "last_update_posted_date": "2006-11-01",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 10,
      "location_summary": "Hoover, Alabama • San Francisco, California • Tampa, Florida + 7 more",
      "locations": [
        {
          "city": "Hoover",
          "state": "Alabama"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00057031"
    },
    {
      "nct_id": "NCT02477956",
      "title": "Effect of a Monthly High Dose of Vitamin D3 on Bariatric Surgery Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Morbid Obesity",
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "vitamin D3 (Replesta)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Texas Tech University",
      "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": 31,
      "start_date": "2012-11",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2015-06-23",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 1,
      "location_summary": "Lubbock, Texas",
      "locations": [
        {
          "city": "Lubbock",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02477956"
    },
    {
      "nct_id": "NCT00697294",
      "title": "Impact of Vitamin D Status on Bones in Breastfed Infants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Tri-Vi-Sol",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "2 Hours",
        "sex": "ALL",
        "summary": "Up to 2 Hours"
      },
      "enrollment_count": 80,
      "start_date": "2008-07",
      "completion_date": "2011-11",
      "has_results": false,
      "last_update_posted_date": "2011-12-05",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 3,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00697294"
    },
    {
      "nct_id": "NCT01488227",
      "title": "A Prospective Trial on the Effects of Vitamin D Supplementation in Collegiate Swimmers and Divers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Kentucky",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 45,
      "start_date": "2011-08",
      "completion_date": "2012-03",
      "has_results": false,
      "last_update_posted_date": "2013-02-25",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01488227"
    },
    {
      "nct_id": "NCT05259527",
      "title": "Vitamin D Supplementation on Reported Rates of Taxane-Induced Neuropathy",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Neuropathic Pain"
      ],
      "interventions": [
        {
          "name": "Ergocalciferol Capsules",
          "type": "DRUG"
        },
        {
          "name": "Cholecalciferol Capsules",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2022-12-19",
      "completion_date": "2030-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-14",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05259527"
    },
    {
      "nct_id": "NCT00851396",
      "title": "Assessment of Influence of Vitamin D on Insulin Secretion and Sensitivity in Obese Teenage Girls",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vitamin D Deficiency",
        "Insulin Resistance",
        "Insulin Sensitivity",
        "Obesity"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "18 Years",
        "sex": "FEMALE",
        "summary": "13 Years to 18 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2008-04",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2011-09-12",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00851396"
    },
    {
      "nct_id": "NCT01426724",
      "title": "Effects of Vitamin D on Renal Blood Flow, Proteinuria and Inflammation in Patients With Chronic Kidney Disease",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Kidney Disease",
        "Secondary Hyperparathyroidism"
      ],
      "interventions": [
        {
          "name": "Contrast Enhanced Ultrasonography",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 0,
      "start_date": "2011-09",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2014-05-21",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01426724"
    },
    {
      "nct_id": "NCT07341308",
      "title": "Does Vitamin C Increase the Body Heat Generated By The Nervous System?",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolism Changes",
        "Vitamin D"
      ],
      "interventions": [
        {
          "name": "Vitamin C",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Colorado State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 20,
      "start_date": "2025-03-17",
      "completion_date": "2026-12-08",
      "has_results": false,
      "last_update_posted_date": "2026-07-02",
      "last_synced_at": "2026-10-15T14:34:35.086Z",
      "location_count": 1,
      "location_summary": "Fort Collins, Colorado",
      "locations": [
        {
          "city": "Fort Collins",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07341308"
    }
  ]
}