{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D3+%28Cholecalciferol%29&page=3",
    "query": {
      "intervention": "Vitamin D3 (Cholecalciferol)",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 959,
    "total_pages": 96,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D3+%28Cholecalciferol%29&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D3+%28Cholecalciferol%29&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-08T22:49:29.164Z",
  "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": "NCT04885803",
      "title": "Vitamin D Absorbance Study - Clinical Trial of the Absorbance of Nano Liquid D3",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Softgel Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Nano Liquid Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "25(OH)D Blood Serum Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Placebo Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Inspired Life Medical, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 114,
      "start_date": "2021-03-26",
      "completion_date": "2021-07-30",
      "has_results": false,
      "last_update_posted_date": "2021-08-24",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 1,
      "location_summary": "Le Sueur, Minnesota",
      "locations": [
        {
          "city": "Le Sueur",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04885803"
    },
    {
      "nct_id": "NCT05522179",
      "title": "Nutritional Supplements and Foot Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Foot Injuries and Disorders"
      ],
      "interventions": [
        {
          "name": "NutraHeal",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "NutraHeal Plus",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "NutraHeal",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "20 Years to 80 Years"
      },
      "enrollment_count": 46,
      "start_date": "2022-08-29",
      "completion_date": "2023-07-30",
      "has_results": false,
      "last_update_posted_date": "2023-08-01",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 3,
      "location_summary": "Altoona, Pennsylvania • Ebensburg, Pennsylvania • State College, Pennsylvania",
      "locations": [
        {
          "city": "Altoona",
          "state": "Pennsylvania"
        },
        {
          "city": "Ebensburg",
          "state": "Pennsylvania"
        },
        {
          "city": "State College",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05522179"
    },
    {
      "nct_id": "NCT02410005",
      "title": "Intervention Using Vitamin D for Elevated Urinary Albumin Treated With Losartan in Diabetes (IDEAL)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Diabetic Nephropathies"
      ],
      "interventions": [
        {
          "name": "Calcitriol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Losartan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "sponsor": "Weill Cornell Medical College in Qatar",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "21 Years to 80 Years"
      },
      "enrollment_count": 56,
      "start_date": "2014-10",
      "completion_date": "2015-09-07",
      "has_results": false,
      "last_update_posted_date": "2017-06-15",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02410005"
    },
    {
      "nct_id": "NCT01942694",
      "title": "Vitamin D and Type 2 Diabetes Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prediabetes",
        "Type 2 Diabetes"
      ],
      "interventions": [
        {
          "name": "Vitamin D (Cholecalciferol)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Tufts Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 2423,
      "start_date": "2013-10",
      "completion_date": "2018-11",
      "has_results": true,
      "last_update_posted_date": "2022-08-16",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 25,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Palo Alto, California + 20 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01942694"
    },
    {
      "nct_id": "NCT01225263",
      "title": "Statin/Vitamin D & Migraine Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Migraine"
      ],
      "interventions": [
        {
          "name": "Simvastatin",
          "type": "DRUG"
        },
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Rami Burstein",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 89,
      "start_date": "2010-09",
      "completion_date": "2015-01",
      "has_results": true,
      "last_update_posted_date": "2016-01-26",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01225263"
    },
    {
      "nct_id": "NCT00887432",
      "title": "Cholecalciferol Supplement in Treating Patients With Localized Prostate Cancer Undergoing Observation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prostate Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Patient Observation",
          "type": "OTHER"
        },
        {
          "name": "Placebo Administration",
          "type": "DRUG"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Roswell Park Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 132,
      "start_date": "2009-04-08",
      "completion_date": "2020-06-08",
      "has_results": true,
      "last_update_posted_date": "2021-10-26",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00887432"
    },
    {
      "nct_id": "NCT00903344",
      "title": "Impact of Vitamin D Supplementation on Lactation Associated Bone Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        },
        {
          "name": "Multivitamin",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Leigh Eck, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 22,
      "start_date": "2009-12",
      "completion_date": "2012-06",
      "has_results": true,
      "last_update_posted_date": "2014-08-18",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 1,
      "location_summary": "Kansas City, Missouri",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00903344"
    },
    {
      "nct_id": "NCT02936999",
      "title": "Vitamin D Supplementation in Women With DCIS and/or LCIS",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Inova Health Care Services",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 8,
      "start_date": "2016-08",
      "completion_date": "2019-01",
      "has_results": true,
      "last_update_posted_date": "2020-12-16",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 1,
      "location_summary": "Fairfax, Virginia",
      "locations": [
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02936999"
    },
    {
      "nct_id": "NCT01815437",
      "title": "Evaluating Vitamin D Content in Mushrooms",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Mushroom Vitamin D2",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D2 - Ergocalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Mushroom Extract",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Boston University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 80,
      "start_date": "2012-01",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2017-03-27",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01815437"
    },
    {
      "nct_id": "NCT01230307",
      "title": "Vitamin D Supplementation for Treatment of Heart Failure",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 28,
      "start_date": "2010-10",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2016-11-18",
      "last_synced_at": "2026-10-08T22:49:29.164Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01230307"
    }
  ]
}