{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=cholecalciferol+%28vitamin+D%29&page=11",
    "query": {
      "intervention": "cholecalciferol (vitamin D)",
      "page": 11
    },
    "page_size": 10
  },
  "pagination": {
    "page": 11,
    "page_size": 10,
    "total_count": 959,
    "total_pages": 96,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=cholecalciferol+%28vitamin+D%29&page=12&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=cholecalciferol+%28vitamin+D%29&page=10&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-14T21:53:35.384Z",
  "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": "NCT01169142",
      "title": "Study of Vitamin D in the Severely Mentally Ill",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Schizophrenia",
        "Schizoaffective Disorder"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Bronx Psychiatric Center",
      "sponsor_class": "OTHER_GOV",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "19 Years to 70 Years"
      },
      "enrollment_count": 40,
      "start_date": "2010-01",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2018-07-19",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01169142"
    },
    {
      "nct_id": "NCT00669656",
      "title": "Herbal Therapy for Treatment of Recurrent Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Prostate Health Cocktail",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Southern California",
      "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": 43,
      "start_date": "2008-07-06",
      "completion_date": "2014-10-14",
      "has_results": false,
      "last_update_posted_date": "2017-04-20",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00669656"
    },
    {
      "nct_id": "NCT01835639",
      "title": "Vitamin D Supplementation in Glomerular Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glomerular Disease"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol, 2000 or 4000 IUs by mouth daily for 12 weeks",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "5 Years to 30 Years"
      },
      "enrollment_count": 32,
      "start_date": "2013-04",
      "completion_date": "2017-09",
      "has_results": false,
      "last_update_posted_date": "2019-08-12",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 5,
      "location_summary": "Wilmington, Delaware • Baltimore, Maryland • New Hyde Park, New York + 1 more",
      "locations": [
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New Hyde Park",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01835639"
    },
    {
      "nct_id": "NCT01815047",
      "title": "Vitamin D Status Impacts Inflammation and Risk of Infections During Pregnancy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Inflammation",
        "Infection"
      ],
      "interventions": [
        {
          "name": "Vitamin D3 Supplementation",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "18 Years",
        "sex": "FEMALE",
        "summary": "13 Years to 18 Years · Female only"
      },
      "enrollment_count": 85,
      "start_date": "2012-12",
      "completion_date": "2019-05",
      "has_results": false,
      "last_update_posted_date": "2019-10-28",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01815047"
    },
    {
      "nct_id": "NCT01909115",
      "title": "Two Vitamin D Dosing Strategies in Children With Chronic Kidney Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "1000 IU of Vitamin D3",
          "type": "DRUG"
        },
        {
          "name": "4000 IU of Vitamin D3",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "9 Years to 21 Years"
      },
      "enrollment_count": 98,
      "start_date": "2013-09",
      "completion_date": "2014-09-26",
      "has_results": false,
      "last_update_posted_date": "2020-05-19",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01909115"
    },
    {
      "nct_id": "NCT06610968",
      "title": "Acute Vitamin D Supplementation on Testosterone in Females",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Female Hormone Profile"
      ],
      "interventions": [
        {
          "name": "Vitamin D (Cholecalciferol )",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo Group",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 20,
      "start_date": "2025-07-01",
      "completion_date": "2026-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-25",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06610968"
    },
    {
      "nct_id": "NCT01473589",
      "title": "Effect of Teriparatide on Hip Fracture Healing",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Femur Neck Fracture"
      ],
      "interventions": [
        {
          "name": "Teriparatide",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Calcium supplementation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D supplementation",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Eli Lilly and Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 122,
      "start_date": "2012-02",
      "completion_date": "2013-12",
      "has_results": true,
      "last_update_posted_date": "2015-04-16",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 24,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona • La Mesa, California + 21 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Laguna Hills",
          "state": "California"
        },
        {
          "city": "Lancaster",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01473589"
    },
    {
      "nct_id": "NCT01366885",
      "title": "Vitamin D to Prevent Autism in Newborn Siblings",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Autistic Disorder"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "44 Years",
        "sex": "FEMALE",
        "summary": "20 Years to 44 Years · Female only"
      },
      "enrollment_count": 20,
      "start_date": "2008-02",
      "completion_date": "2016-02",
      "has_results": true,
      "last_update_posted_date": "2016-06-14",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 1,
      "location_summary": "Oregon City, Oregon",
      "locations": [
        {
          "city": "Oregon City",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01366885"
    },
    {
      "nct_id": "NCT00103740",
      "title": "Safety and Efficacy Trial With Zoledronic Acid for the Treatment of Paget's Disease of Bone, Including an Extended Observation Period",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Paget's Disease of Bone"
      ],
      "interventions": [
        {
          "name": "zoledronic acid",
          "type": "DRUG"
        },
        {
          "name": "placebo to zoledronic acid",
          "type": "DRUG"
        },
        {
          "name": "Risedronate",
          "type": "DRUG"
        },
        {
          "name": "Placebo to risedronate",
          "type": "DRUG"
        },
        {
          "name": "Calcium and vitamin D supplements",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 185,
      "start_date": "2002-04",
      "completion_date": "2011-04",
      "has_results": true,
      "last_update_posted_date": "2012-06-04",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 10,
      "location_summary": "Tucson, Arizona • Colorado Springs, Colorado • Indianapolis, Indiana + 7 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00103740"
    },
    {
      "nct_id": "NCT00593996",
      "title": "Evaluation of Potential Vitamin D Effects on Muscle: a Pilot Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dysphagia",
        "Fecal Incontinence",
        "Urinary Incontinence"
      ],
      "interventions": [
        {
          "name": "Ergocalciferol (vitamin D2)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "70 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "70 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2006-07",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2015-10-05",
      "last_synced_at": "2026-10-14T21:53:35.384Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00593996"
    }
  ]
}