{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+%28cholecalciferol%29&page=26",
    "query": {
      "intervention": "Vitamin D (cholecalciferol)",
      "page": 26
    },
    "page_size": 10
  },
  "pagination": {
    "page": 26,
    "page_size": 10,
    "total_count": 960,
    "total_pages": 96,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+%28cholecalciferol%29&page=27&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+%28cholecalciferol%29&page=25&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-15T20:57:05.082Z",
  "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": "NCT03594708",
      "title": "Immunonutrition in Ulcerative Colitis",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Ulcerative Colitis"
      ],
      "interventions": [
        {
          "name": "Nutrition supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo supplement",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Baptist Memorial Health Care Corporation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2018-04-30",
      "completion_date": "2018-12-31",
      "has_results": false,
      "last_update_posted_date": "2018-07-20",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03594708"
    },
    {
      "nct_id": "NCT05658159",
      "title": "Physiological and Dietary Characteristics of Boys and Girls High School Basketball Players",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Bone Health"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "DXA scan",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Nutrition analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "PepsiCo Global R&D",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "19 Years",
        "sex": "ALL",
        "summary": "14 Years to 19 Years"
      },
      "enrollment_count": 120,
      "start_date": "2022-11-01",
      "completion_date": "2023-04-27",
      "has_results": false,
      "last_update_posted_date": "2024-01-10",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Bradenton, Florida",
      "locations": [
        {
          "city": "Bradenton",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05658159"
    },
    {
      "nct_id": "NCT01847027",
      "title": "Exercise and NutraStem (NT-020): Effects on Stem Cells",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adult Stem Cell Proliferation"
      ],
      "interventions": [
        {
          "name": "NutraStem",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of North Texas Health Science Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "50 Years to 70 Years"
      },
      "enrollment_count": 23,
      "start_date": "2013-04",
      "completion_date": "2017-07-17",
      "has_results": true,
      "last_update_posted_date": "2019-05-29",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Fort Worth, Texas",
      "locations": [
        {
          "city": "Fort Worth",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01847027"
    },
    {
      "nct_id": "NCT01499940",
      "title": "Study to Assess Prevention of Oxaliplatin-induced Neurotoxicity Through Vitamin D Pathway",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Neurotoxicity"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gerald Higa, PharmD.",
      "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": 9,
      "start_date": "2012-01",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2021-11-10",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Morgantown, West Virginia",
      "locations": [
        {
          "city": "Morgantown",
          "state": "West Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01499940"
    },
    {
      "nct_id": "NCT01932788",
      "title": "Preventing Health Disparities During Pregnancy Through Vitamin D Supplementation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Vitamin D3 Deficiency"
      ],
      "interventions": [
        {
          "name": "Vitamin D3 4000 IU in gummy form",
          "type": "DRUG"
        },
        {
          "name": "Placebo gummy vitamin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 342,
      "start_date": "2013-01",
      "completion_date": "2018-04-30",
      "has_results": true,
      "last_update_posted_date": "2018-11-21",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01932788"
    },
    {
      "nct_id": "NCT00610688",
      "title": "Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their Infants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Prenatal Vitamin",
          "type": "DRUG"
        },
        {
          "name": "Cholecalciferol (Vitamin D3)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 192,
      "start_date": "2008-01",
      "completion_date": "2012-04",
      "has_results": true,
      "last_update_posted_date": "2021-10-19",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00610688"
    },
    {
      "nct_id": "NCT01994018",
      "title": "Correlation Between Relapses in Multiple Sclerosis (MS) and Vitamin D Intake",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "OSF Healthcare System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2011-11",
      "completion_date": "2014-06",
      "has_results": false,
      "last_update_posted_date": "2022-04-29",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Peoria, Illinois",
      "locations": [
        {
          "city": "Peoria",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01994018"
    },
    {
      "nct_id": "NCT00499408",
      "title": "Vitamin D and Soy Supplements in Treating Patients With Recurrent Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "soy",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "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": 26,
      "start_date": "2007-04",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2018-11-21",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00499408"
    },
    {
      "nct_id": "NCT00536276",
      "title": "Evaluation of Vitamin D Status in Children With Acute Burns",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Burns",
        "Bone Demineralization"
      ],
      "interventions": [
        {
          "name": "Vitamin D2",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Shriners Hospitals for Children",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "6 Months to 18 Years"
      },
      "enrollment_count": 50,
      "start_date": "2003-03",
      "completion_date": "2011-04",
      "has_results": false,
      "last_update_posted_date": "2012-05-09",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00536276"
    },
    {
      "nct_id": "NCT01169259",
      "title": "Vitamin D and Omega-3 Trial (VITAL)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Cancer",
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "omega-3 fatty acids (fish oil)",
          "type": "DRUG"
        },
        {
          "name": "Vitamin D3 placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Fish oil placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "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": 25871,
      "start_date": "2010-07",
      "completion_date": "2026-10",
      "has_results": true,
      "last_update_posted_date": "2026-07-30",
      "last_synced_at": "2026-10-15T20:57:05.082Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01169259"
    }
  ]
}