{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamins+A+and+D&page=3",
    "query": {
      "intervention": "Vitamins A and D",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 505,
    "total_pages": 51,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamins+A+and+D&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamins+A+and+D&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T06:36:31.487Z",
  "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": "NCT00073073",
      "title": "Exemestane and Celecoxib in Postmenopausal Women at High Risk for Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "Exemestane",
          "type": "DRUG"
        },
        {
          "name": "Calcium carbonate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Georgetown University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 46,
      "start_date": "2003-11",
      "completion_date": "2011-12",
      "has_results": true,
      "last_update_posted_date": "2016-05-17",
      "last_synced_at": "2026-10-06T06:36:31.487Z",
      "location_count": 2,
      "location_summary": "Washington D.C., District of Columbia • Bethesda, Maryland",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00073073"
    },
    {
      "nct_id": "NCT03629717",
      "title": "RANKL Inhibition and Breast Tissue Biomarkers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Breast Cancer Prevention",
        "Mammographic Density"
      ],
      "interventions": [
        {
          "name": "Ultrasound-guided core needle biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Denosumab",
          "type": "DRUG"
        },
        {
          "name": "Blood draw",
          "type": "PROCEDURE"
        },
        {
          "name": "Calcium",
          "type": "DRUG"
        },
        {
          "name": "Vitamin D",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "35 Years and older · Female only"
      },
      "enrollment_count": 10,
      "start_date": "2018-06-01",
      "completion_date": "2018-12-03",
      "has_results": false,
      "last_update_posted_date": "2024-10-16",
      "last_synced_at": "2026-10-06T06:36:31.487Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03629717"
    },
    {
      "nct_id": "NCT01773278",
      "title": "Cholesterol and Antioxidant Treatment in Patients With Smith-Lemli-Opitz Syndrome (SLOS)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smith-Lemli-Opitz Syndrome",
        "Cone-Rod Dystrophy",
        "Hearing Loss"
      ],
      "interventions": [
        {
          "name": "Antioxidants",
          "type": "DRUG"
        },
        {
          "name": "Cholesterol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "Up to 65 Years"
      },
      "enrollment_count": 100,
      "start_date": "2008-12",
      "completion_date": "2025-12",
      "has_results": false,
      "last_update_posted_date": "2024-05-08",
      "last_synced_at": "2026-10-06T06:36:31.487Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01773278"
    },
    {
      "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": "2026-10-06T06:36:31.487Z",
      "location_count": 1,
      "location_summary": "Mineola, New York",
      "locations": [
        {
          "city": "Mineola",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01153568"
    },
    {
      "nct_id": "NCT04826133",
      "title": "Vitamin D and Cocaine Administration",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Cocaine Use Disorder"
      ],
      "interventions": [
        {
          "name": "Calcitriol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "30 Years to 55 Years"
      },
      "enrollment_count": 4,
      "start_date": "2019-03-27",
      "completion_date": "2020-01-17",
      "has_results": false,
      "last_update_posted_date": "2023-08-14",
      "last_synced_at": "2026-10-06T06:36:31.487Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04826133"
    },
    {
      "nct_id": "NCT04194840",
      "title": "Transplant Wellness Clinic for Elderly or High Risk Patients Undergoing BMT",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Stem Cell Transplant Complications",
        "Myeloma",
        "Lymphoma",
        "Allogeneic and Autologous Stem Cell Transplant"
      ],
      "interventions": [
        {
          "name": "physical therapy consult",
          "type": "OTHER"
        },
        {
          "name": "Cognitive Assessment",
          "type": "OTHER"
        },
        {
          "name": "Cancer Aging Research Group (CARG) assessment",
          "type": "OTHER"
        },
        {
          "name": "Medication Review",
          "type": "OTHER"
        },
        {
          "name": "Nutrition assessment",
          "type": "OTHER"
        },
        {
          "name": "Laboratory studies",
          "type": "OTHER"
        },
        {
          "name": "Patient satisfaction questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Physician Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Patient follow-up questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Case Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 20,
      "start_date": "2021-05-01",
      "completion_date": "2025-03-28",
      "has_results": false,
      "last_update_posted_date": "2025-08-05",
      "last_synced_at": "2026-10-06T06:36:31.487Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04194840"
    },
    {
      "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": "2026-10-06T06:36:31.487Z",
      "location_count": 1,
      "location_summary": "Peoria, Illinois",
      "locations": [
        {
          "city": "Peoria",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01994018"
    },
    {
      "nct_id": "NCT00867217",
      "title": "Vitamin D3 for Aromatase Inhibitor Induced Arthralgias",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "High Dose Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Standard Dose Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Letrozole 2.5mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "sponsor": "Qamar Khan",
      "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": 160,
      "start_date": "2009-03",
      "completion_date": "2011-01",
      "has_results": true,
      "last_update_posted_date": "2018-02-09",
      "last_synced_at": "2026-10-06T06:36:31.487Z",
      "location_count": 2,
      "location_summary": "Westwood, Kansas • Wichita, Kansas",
      "locations": [
        {
          "city": "Westwood",
          "state": "Kansas"
        },
        {
          "city": "Wichita",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00867217"
    },
    {
      "nct_id": "NCT02166333",
      "title": "Study To Understand Fall Reduction and Vitamin D in You",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency",
        "Falls"
      ],
      "interventions": [
        {
          "name": "200 IU/d cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "1000 IU/d cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "2000 IU/d cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "4000 IU/d cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "70 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "70 Years and older"
      },
      "enrollment_count": 688,
      "start_date": "2015-06-30",
      "completion_date": "2019-06-07",
      "has_results": true,
      "last_update_posted_date": "2021-05-14",
      "last_synced_at": "2026-10-06T06:36:31.487Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Hagerstown, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Hagerstown",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02166333"
    },
    {
      "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": "2026-10-06T06:36:31.487Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03594708"
    }
  ]
}