{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vitamin+D+Status&page=3",
    "query": {
      "condition": "Vitamin D Status",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 55,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vitamin+D+Status&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vitamin+D+Status&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-02T08:19:58.286Z",
  "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": "NCT01443897",
      "title": "Effect of Consumption of Post-harvest UV-B Treated Mushrooms on Vitamin D Status of Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "1,000 IU vitamin D2",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "placebo capsule",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "mushrooms",
          "type": "OTHER"
        },
        {
          "name": "UVB-treated mushrooms, 400 IU vitamin D2",
          "type": "OTHER"
        },
        {
          "name": "UVB-treated mushrooms, 1,000 IU vitamin D2",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "USDA, Western Human Nutrition Research Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "59 Years",
        "sex": "ALL",
        "summary": "20 Years to 59 Years"
      },
      "enrollment_count": 48,
      "start_date": "2010-05",
      "completion_date": "2011-06",
      "has_results": false,
      "last_update_posted_date": "2011-09-30",
      "last_synced_at": "2026-10-02T08:19:58.286Z",
      "location_count": 1,
      "location_summary": "Davis, California",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01443897"
    },
    {
      "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": "2026-10-02T08:19:58.286Z",
      "location_count": 1,
      "location_summary": "Mineola, New York",
      "locations": [
        {
          "city": "Mineola",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01153568"
    },
    {
      "nct_id": "NCT01689779",
      "title": "High Dose Preoperative Cholecalciferol Supplementation and Perioperative Vitamin D Status",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypovitaminosis D"
      ],
      "interventions": [
        {
          "name": "100,000 IU cholecalciferol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2013-01",
      "completion_date": "2015-05",
      "has_results": true,
      "last_update_posted_date": "2017-09-28",
      "last_synced_at": "2026-10-02T08:19:58.286Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01689779"
    },
    {
      "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": "2026-10-02T08:19:58.286Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07385144"
    },
    {
      "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": "2026-10-02T08:19:58.286Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01042561"
    },
    {
      "nct_id": "NCT00697294",
      "title": "Impact of Vitamin D Status on Bones in Breastfed Infants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Tri-Vi-Sol",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "2 Hours",
        "sex": "ALL",
        "summary": "Up to 2 Hours"
      },
      "enrollment_count": 80,
      "start_date": "2008-07",
      "completion_date": "2011-11",
      "has_results": false,
      "last_update_posted_date": "2011-12-05",
      "last_synced_at": "2026-10-02T08:19:58.286Z",
      "location_count": 3,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00697294"
    },
    {
      "nct_id": "NCT00263185",
      "title": "High Dose Vit D Musculoskeletal Symptoms & Bone Density in Anastrozole-Treated Breast Cancer With Marginal Vit D Status",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Calcium carbonate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Washington University School of Medicine",
      "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": 63,
      "start_date": "2005-11",
      "completion_date": "2009-11",
      "has_results": false,
      "last_update_posted_date": "2014-09-22",
      "last_synced_at": "2026-10-02T08:19:58.286Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00263185"
    },
    {
      "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": "2026-10-02T08:19:58.286Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01932788"
    },
    {
      "nct_id": "NCT01825616",
      "title": "Vitamin D2, Muscle Damage, NASCAR Pitcrew",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Muscle Function",
        "Muscle Soreness",
        "Vitamin D Status"
      ],
      "interventions": [
        {
          "name": "Vitamin D2 mushroom powder",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Appalachian State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "40 Years",
        "sex": "MALE",
        "summary": "20 Years to 40 Years · Male only"
      },
      "enrollment_count": 33,
      "start_date": "2012-10",
      "completion_date": "2013-01",
      "has_results": false,
      "last_update_posted_date": "2013-04-09",
      "last_synced_at": "2026-10-02T08:19:58.286Z",
      "location_count": 3,
      "location_summary": "Kannapolis, North Carolina",
      "locations": [
        {
          "city": "Kannapolis",
          "state": "North Carolina"
        },
        {
          "city": "Kannapolis",
          "state": "North Carolina"
        },
        {
          "city": "Kannapolis",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01825616"
    },
    {
      "nct_id": "NCT00412087",
      "title": "Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South Carolina",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Vitamin D Deficiency",
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "cholecalciferol (vitamin D3)",
          "type": "DRUG"
        },
        {
          "name": "cholecalciferol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "16 Years to 45 Years · Female only"
      },
      "enrollment_count": 564,
      "start_date": "2007-01",
      "completion_date": "2009-07",
      "has_results": true,
      "last_update_posted_date": "2016-07-29",
      "last_synced_at": "2026-10-02T08:19:58.286Z",
      "location_count": 1,
      "location_summary": "Columbia, South Carolina",
      "locations": [
        {
          "city": "Columbia",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00412087"
    }
  ]
}