{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vitamin+D+Status&page=2",
    "query": {
      "condition": "Vitamin D Status",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vitamin+D+Status&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T09:46:47.392Z",
  "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": "NCT01593501",
      "title": "How Does Magnesium Status Influence Calcium Homeostasis?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Magnesium Deficiency",
        "Calcium Metabolism Disorders"
      ],
      "interventions": [
        {
          "name": "vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "75 Years",
        "sex": "FEMALE",
        "summary": "30 Years to 75 Years · Female only"
      },
      "enrollment_count": 39,
      "start_date": "2012-05",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2016-11-01",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01593501"
    },
    {
      "nct_id": "NCT01042561",
      "title": "Vitamin D Status and Dose Response in Infants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D",
        "Prematurity"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "vitamin D3 placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Minutes",
        "maximum_age": "3 Months",
        "sex": "ALL",
        "summary": "5 Minutes to 3 Months"
      },
      "enrollment_count": 64,
      "start_date": "2009-08-07",
      "completion_date": "2010-08-01",
      "has_results": false,
      "last_update_posted_date": "2023-09-01",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01042561"
    },
    {
      "nct_id": "NCT07385144",
      "title": "A Study of a Dietary Supplement on Serum Biomarkers in Children",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nutritional Status",
        "Serum Biomarkers"
      ],
      "interventions": [
        {
          "name": "Dietary Supplement (Kids Multi & Omegas)",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "SF Research Institute, Inc.",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "4 Years to 15 Years"
      },
      "enrollment_count": 30,
      "start_date": "2026-01-30",
      "completion_date": "2026-03-05",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07385144"
    },
    {
      "nct_id": "NCT01153568",
      "title": "Vitamin D and Osteoporosis Prevention in Elderly African American Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Determine Effect of Vitamin D on Bone Health in Elderly African American Women"
      ],
      "interventions": [
        {
          "name": "Vitamin D 3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Winthrop University Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "60 Years and older · Female only"
      },
      "enrollment_count": 260,
      "start_date": "2010-08",
      "completion_date": "2016-10",
      "has_results": false,
      "last_update_posted_date": "2018-10-03",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Mineola, New York",
      "locations": [
        {
          "city": "Mineola",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01153568"
    },
    {
      "nct_id": "NCT02969850",
      "title": "A New Paradigm for Vitamin D Sufficiency",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "New Biomarkers for Measuring Vitamin D Level"
      ],
      "interventions": [
        {
          "name": "Vitamin D Supplementation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Calcium",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "90 Years",
        "sex": "FEMALE",
        "summary": "60 Years to 90 Years · Female only"
      },
      "enrollment_count": 444,
      "start_date": "2016-02",
      "completion_date": "2019-12-01",
      "has_results": false,
      "last_update_posted_date": "2021-10-22",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Mineola, New York",
      "locations": [
        {
          "city": "Mineola",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02969850"
    },
    {
      "nct_id": "NCT05165173",
      "title": "Almond Milk With Vitamin D: Impact on Vitamin D Status",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Renal Insufficiency, Chronic",
        "Kidney Failure, Chronic"
      ],
      "interventions": [
        {
          "name": "NanoD4CKD",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "MicroD4CKD",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 21,
      "start_date": "2023-05-22",
      "completion_date": "2023-11-18",
      "has_results": false,
      "last_update_posted_date": "2024-06-10",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05165173"
    },
    {
      "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": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01932788"
    },
    {
      "nct_id": "NCT04229368",
      "title": "Effect of Vitamin D Status and Repletion on Postoperative Total Joint Arthroplasty Complications",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hip Arthropathy",
        "Knee Arthropathy",
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 900,
      "start_date": "2019-09-01",
      "completion_date": "2024-07-01",
      "has_results": false,
      "last_update_posted_date": "2023-08-16",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04229368"
    },
    {
      "nct_id": "NCT00650780",
      "title": "Vitamin D Binding Protein (Gc) Allele Variation Effects Response to Vitamin D Treatment",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vitamin D Status"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "19 Years to 90 Years"
      },
      "enrollment_count": 29,
      "start_date": "2007-10",
      "completion_date": "2008-01",
      "has_results": false,
      "last_update_posted_date": "2008-04-02",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00650780"
    },
    {
      "nct_id": "NCT01410084",
      "title": "Improving Vitamin D Status in Home-bound Elders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency",
        "Accidental Falls"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin E",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 68,
      "start_date": "2010-10",
      "completion_date": "2011-08",
      "has_results": true,
      "last_update_posted_date": "2019-09-09",
      "last_synced_at": "2026-05-22T09:46:47.392Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01410084"
    }
  ]
}