{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D3-Placebo&page=2",
    "query": {
      "intervention": "Vitamin D3-Placebo",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 410,
    "total_pages": 41,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D3-Placebo&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D3-Placebo&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T16:59:47.820Z",
  "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": "NCT05125809",
      "title": "Setrusumab vs Placebo for Osteogenesis Imperfecta",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Osteogenesis Imperfecta"
      ],
      "interventions": [
        {
          "name": "Setrusumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Ultragenyx Pharmaceutical Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "5 Years to 25 Years"
      },
      "enrollment_count": 183,
      "start_date": "2022-02-21",
      "completion_date": "2027-04",
      "has_results": false,
      "last_update_posted_date": "2026-10-06",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 22,
      "location_summary": "Little Rock, Arkansas • Los Angeles, California • Sacramento, California + 19 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Hartford",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05125809"
    },
    {
      "nct_id": "NCT04120077",
      "title": "Combined Effects of Diabetes Self-Management Education and Nutritional Supplementation on Visual Function and Retinopathy",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes Mellitus",
        "Diabetic Retinopathy"
      ],
      "interventions": [
        {
          "name": "EyePromise DVS, EyePromise DVS plus EyePromise EZTears",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "ZeaVision, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 150,
      "start_date": "2020-01-01",
      "completion_date": "2022-01-01",
      "has_results": false,
      "last_update_posted_date": "2021-04-23",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 1,
      "location_summary": "Charlotte, North Carolina",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04120077"
    },
    {
      "nct_id": "NCT01292187",
      "title": "A Study of Oral Recombinant Salmon Calcitonin (rsCT) to Prevent Postmenopausal Osteoporosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteopenia"
      ],
      "interventions": [
        {
          "name": "Oral calcitonin at dinnertime",
          "type": "DRUG"
        },
        {
          "name": "Oral placebo at dinnertime",
          "type": "DRUG"
        },
        {
          "name": "Oral calcitonin at bedtime",
          "type": "DRUG"
        },
        {
          "name": "Oral placebo at bedtime",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tarsa Therapeutics, Inc.",
      "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": 129,
      "start_date": "2011-01",
      "completion_date": "2012-07",
      "has_results": true,
      "last_update_posted_date": "2014-09-12",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 10,
      "location_summary": "Walnut Creek, California • Clearwater, Florida • Bethesda, Maryland + 7 more",
      "locations": [
        {
          "city": "Walnut Creek",
          "state": "California"
        },
        {
          "city": "Clearwater",
          "state": "Florida"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Worcester",
          "state": "Massachusetts"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01292187"
    },
    {
      "nct_id": "NCT01248065",
      "title": "Study of the Effect of Vitamin D as an Add-on Therapy to Corticosteroids in Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        },
        {
          "name": "Ciclesonide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Milton S. Hershey Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 408,
      "start_date": "2011-04",
      "completion_date": "2014-01",
      "has_results": true,
      "last_update_posted_date": "2014-08-13",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 16,
      "location_summary": "San Francisco, California • Denver, Colorado • Atlanta, Georgia + 10 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01248065"
    },
    {
      "nct_id": "NCT04821544",
      "title": "Maternal Stress on Human Milk and Infant Outcomes",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postpartum Depression",
        "Preterm Labor"
      ],
      "interventions": [
        {
          "name": "Mindfulness-based intervention (with a focus on self-compassion; MBSC)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Idaho",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 500,
      "start_date": "2021-05-01",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-11",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 1,
      "location_summary": "Coeur d'Alene, Idaho",
      "locations": [
        {
          "city": "Coeur d'Alene",
          "state": "Idaho"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04821544"
    },
    {
      "nct_id": "NCT02881957",
      "title": "Hypovitaminosis D in Neurocritical Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Craniocerebral Trauma",
        "Intracranial Aneurysm",
        "Brain Neoplasms",
        "Spinal Cord Injuries",
        "Seizures",
        "Meningitis",
        "Stroke",
        "Intracranial Hemorrhages",
        "Critical Illness",
        "Vitamin d Deficiency"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 274,
      "start_date": "2016-10-10",
      "completion_date": "2018-10-10",
      "has_results": true,
      "last_update_posted_date": "2022-06-15",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02881957"
    },
    {
      "nct_id": "NCT01386736",
      "title": "Vitamin D and Glucose Metabolism in Pediatrics",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Insulin Resistance",
        "Obesity",
        "Vitamin D25 Insufficiency"
      ],
      "interventions": [
        {
          "name": "Vitamin D drops",
          "type": "DRUG"
        },
        {
          "name": "Placebo drops",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "7 Years to 18 Years"
      },
      "enrollment_count": 110,
      "start_date": "2011-04",
      "completion_date": "2012-03",
      "has_results": false,
      "last_update_posted_date": "2011-07-01",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01386736"
    },
    {
      "nct_id": "NCT00204919",
      "title": "Vitamin D Administration in the Nursing Home",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency",
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 96,
      "start_date": "2001-06",
      "completion_date": "2004-11",
      "has_results": false,
      "last_update_posted_date": "2023-10-04",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00204919"
    },
    {
      "nct_id": "NCT02011828",
      "title": "Ergocalciferol Therapy in Calcidiol Deficient, Hemodialysis Patients on Therapeutic Doses of Paricalcitol",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Inflammation",
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "Ergocalciferol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 58,
      "start_date": "2009-05",
      "completion_date": "2011-01",
      "has_results": false,
      "last_update_posted_date": "2016-08-11",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02011828"
    },
    {
      "nct_id": "NCT01052051",
      "title": "Clinical Trial of Vitamin D3 to Reduce Cancer Risk in Postmenopausal Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Calcium carbonate",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "55 Years and older · Female only"
      },
      "enrollment_count": 2303,
      "start_date": "2009-06",
      "completion_date": "2015-08",
      "has_results": false,
      "last_update_posted_date": "2019-07-24",
      "last_synced_at": "2026-10-06T16:59:47.820Z",
      "location_count": 1,
      "location_summary": "Fremont, Nebraska",
      "locations": [
        {
          "city": "Fremont",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01052051"
    }
  ]
}