{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=cholecalciferol+%28vitamin+D%29&page=25",
    "query": {
      "intervention": "cholecalciferol (vitamin D)",
      "page": 25
    },
    "page_size": 10
  },
  "pagination": {
    "page": 25,
    "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=26&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=cholecalciferol+%28vitamin+D%29&page=24&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-16T13:16:56.944Z",
  "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": "NCT03458819",
      "title": "EMT in Peritoneal Dialysis Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Peritoneal Dialysis Complication"
      ],
      "interventions": [
        {
          "name": "Isolation of peritoneal mesothelial cells",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 22,
      "start_date": "2018-03-20",
      "completion_date": "2019-05-22",
      "has_results": false,
      "last_update_posted_date": "2021-02-25",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03458819"
    },
    {
      "nct_id": "NCT03012555",
      "title": "Vitamin D3 in Patients With Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Icahn School of Medicine at Mount Sinai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2014-10",
      "completion_date": "2016-08-11",
      "has_results": false,
      "last_update_posted_date": "2018-01-19",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03012555"
    },
    {
      "nct_id": "NCT00732758",
      "title": "Defining Vitamin D Insufficiency in School Age Children: A Randomized Placebo Controlled Trial of Vitamin D3",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Vitamin D3 1000 IU",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo Tablet",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "14 Years",
        "sex": "ALL",
        "summary": "8 Years to 14 Years"
      },
      "enrollment_count": 157,
      "start_date": "2008-10",
      "completion_date": "2011-10",
      "has_results": true,
      "last_update_posted_date": "2015-12-29",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00732758"
    },
    {
      "nct_id": "NCT00859027",
      "title": "Effect Of Risedronate On Bone Mass In Older Men Receiving Neoadjuvant Therapy For Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "risedronate",
          "type": "DRUG"
        },
        {
          "name": "Placebo risedronate oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "UConn Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "85 Years",
        "sex": "MALE",
        "summary": "55 Years to 85 Years · Male only"
      },
      "enrollment_count": 50,
      "start_date": "2003-01",
      "completion_date": "2009-02",
      "has_results": true,
      "last_update_posted_date": "2018-05-01",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 1,
      "location_summary": "Farmington, Connecticut",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00859027"
    },
    {
      "nct_id": "NCT06903923",
      "title": "Bone Metabolism in 12-21 Year Olds Undergoing Glucagon Like Peptide (GLP)-1 Receptor Agonist Therapy",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Obesity in Children",
        "Bone Strength",
        "GLP - 1",
        "Lifestyle Modification",
        "Bone Density",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "GLP-1 receptor agonist",
          "type": "DRUG"
        },
        {
          "name": "Lifestyle intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "12 Years to 21 Years"
      },
      "enrollment_count": 120,
      "start_date": "2025-07-31",
      "completion_date": "2030-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-17",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06903923"
    },
    {
      "nct_id": "NCT02603757",
      "title": "Effectiveness of High Dose Vitamin D Supplementation in Stage III Colorectal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colon Cancer",
        "Rectal Cancer"
      ],
      "interventions": [
        {
          "name": "cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Legacy Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 70,
      "start_date": "2016-03",
      "completion_date": "2020-06",
      "has_results": false,
      "last_update_posted_date": "2020-10-01",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 3,
      "location_summary": "Gresham, Oregon • Portland, Oregon • Tualatin, Oregon",
      "locations": [
        {
          "city": "Gresham",
          "state": "Oregon"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Tualatin",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02603757"
    },
    {
      "nct_id": "NCT04400890",
      "title": "Randomized Proof-of-Concept Trial to Evaluate the Safety and Explore the Effectiveness of Resveratrol, a Plant Polyphenol, for COVID-19",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Resveratrol",
          "type": "DRUG"
        },
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Marvin McCreary, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 105,
      "start_date": "2020-09-13",
      "completion_date": "2021-03-01",
      "has_results": true,
      "last_update_posted_date": "2023-02-24",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04400890"
    },
    {
      "nct_id": "NCT01535508",
      "title": "Open Label Clinical Trial of Vitamin D in Children With Autism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Autism",
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Liquid Vitamin D",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "8 Years",
        "sex": "ALL",
        "summary": "3 Years to 8 Years"
      },
      "enrollment_count": 10,
      "start_date": "2012-02",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2019-10-09",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01535508"
    },
    {
      "nct_id": "NCT01709110",
      "title": "VERtebral Fracture Treatment Comparisons in Osteoporotic Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Postmenopausal Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Teriparatide",
          "type": "DRUG"
        },
        {
          "name": "Risedronate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Calcium",
          "type": "DRUG"
        },
        {
          "name": "Vitamin D",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eli Lilly and Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "45 Years and older · Female only"
      },
      "enrollment_count": 1366,
      "start_date": "2012-10",
      "completion_date": "2016-07",
      "has_results": true,
      "last_update_posted_date": "2019-09-23",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 30,
      "location_summary": "Birmingham, Alabama • Concord, California • Fresno, California + 27 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Concord",
          "state": "California"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Lancaster",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01709110"
    },
    {
      "nct_id": "NCT07120997",
      "title": "Prunes Preventing Bone Loss in Perimenopause",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Perimenopausal Bone Loss"
      ],
      "interventions": [
        {
          "name": "Prunes",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Calcium supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D Supplement",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "44 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "44 Years to 55 Years · Female only"
      },
      "enrollment_count": 124,
      "start_date": "2025-12-11",
      "completion_date": "2029-12",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-10-16T13:16:56.944Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07120997"
    }
  ]
}