{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamins+A+and+D&page=12",
    "query": {
      "intervention": "Vitamins A and D",
      "page": 12
    },
    "page_size": 10
  },
  "pagination": {
    "page": 12,
    "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=13&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamins+A+and+D&page=11&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-14T20:17:49.911Z",
  "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": "NCT00799383",
      "title": "Calcium and Vitamin D to Optimize Bone Mass in Boys With Risperidone-induced Hyperprolactinemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Risperidone-induced Hyperprolactinemia"
      ],
      "interventions": [
        {
          "name": "Calcium and Vitamin D",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Chadi A. Calarge",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "17 Years",
        "sex": "MALE",
        "summary": "5 Years to 17 Years · Male only"
      },
      "enrollment_count": 47,
      "start_date": "2008-11",
      "completion_date": "2014-03",
      "has_results": true,
      "last_update_posted_date": "2017-12-26",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00799383"
    },
    {
      "nct_id": "NCT05390736",
      "title": "Evaluating the Cost Effectiveness of STEADI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Accidental Fall"
      ],
      "interventions": [
        {
          "name": "Gait and balance assessment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Medication review",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Comorbidity review",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Fall history",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Assessment of feet/footwear",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Assessment of visual acuity",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Home safety risk assessment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Vitamin D Deficiency",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "National Opinion Research Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 780,
      "start_date": "2020-07-29",
      "completion_date": "2023-09-18",
      "has_results": false,
      "last_update_posted_date": "2023-11-09",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05390736"
    },
    {
      "nct_id": "NCT03331562",
      "title": "A SU2C Catalyst® Trial of a PD1 Inhibitor With or Without a Vitamin D Analog for the Maintenance of Pancreatic Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pancreatic Cancer",
        "Pancreas Adenocarcinoma",
        "Advanced Pancreatic Cancer",
        "Metastatic Pancreatic Cancer",
        "Metastatic Pancreatic Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Pembrolizumab",
          "type": "DRUG"
        },
        {
          "name": "paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Translational Genomics Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2017-12-27",
      "completion_date": "2020-07-10",
      "has_results": true,
      "last_update_posted_date": "2022-12-27",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 6,
      "location_summary": "Scottsdale, Arizona • Duarte, California • Westwood, Kansas + 3 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Westwood",
          "state": "Kansas"
        },
        {
          "city": "Morristown",
          "state": "New Jersey"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03331562"
    },
    {
      "nct_id": "NCT03848741",
      "title": "Independent and Combined Effects of Resistance Exercise Training and β-hydroxy β-methylbutyrate Plus Vitamin D",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aging",
        "Skeletal Muscle"
      ],
      "interventions": [
        {
          "name": "Non-Exercise Control",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Resistance Exercise Training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "HMB+VitD",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "45 Years to 60 Years · Female only"
      },
      "enrollment_count": 48,
      "start_date": "2019-04-01",
      "completion_date": "2021-04",
      "has_results": false,
      "last_update_posted_date": "2019-07-17",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03848741"
    },
    {
      "nct_id": "NCT02684487",
      "title": "Vitamin D Status in Patients With Severe Sepsis",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Sepsis",
        "Severe Sepsis",
        "End Organ Damage",
        "Multi Organ Failure"
      ],
      "interventions": [
        {
          "name": "vitamin D3",
          "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": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 0,
      "start_date": "2017-12",
      "completion_date": "2022-12",
      "has_results": false,
      "last_update_posted_date": "2021-05-05",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02684487"
    },
    {
      "nct_id": "NCT00450073",
      "title": "Improving Vitamin D Status In Cystic Fibrosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "ergocalciferol (vitamin D2)",
          "type": "DRUG"
        },
        {
          "name": "Sperti Del Sol Lamp",
          "type": "DEVICE"
        },
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Atlanta VA Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 30,
      "start_date": "2006-11",
      "completion_date": "2011-05",
      "has_results": true,
      "last_update_posted_date": "2014-02-21",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00450073"
    },
    {
      "nct_id": "NCT02603757",
      "title": "Effectiveness of High Dose Vitamin D Supplementation in Stage III Colorectal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colon Cancer",
        "Rectal Cancer"
      ],
      "interventions": [
        {
          "name": "cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Legacy Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 70,
      "start_date": "2016-03",
      "completion_date": "2020-06",
      "has_results": false,
      "last_update_posted_date": "2020-10-01",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 3,
      "location_summary": "Gresham, Oregon • Portland, Oregon • Tualatin, Oregon",
      "locations": [
        {
          "city": "Gresham",
          "state": "Oregon"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Tualatin",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02603757"
    },
    {
      "nct_id": "NCT01005381",
      "title": "Effect of Calcium Supplement Particle Size and Vitamin D Supplement on Calcium Retention in Adolescent Girls",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Small Particle Size Calcium Carbonate Supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Large Particle Size Calcium Carbonate Supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Calcium Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Purdue University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "14 Years",
        "sex": "FEMALE",
        "summary": "12 Years to 14 Years · Female only"
      },
      "enrollment_count": 55,
      "start_date": "2007-06",
      "completion_date": "2007-07",
      "has_results": false,
      "last_update_posted_date": "2018-05-09",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 1,
      "location_summary": "West Lafayette, Indiana",
      "locations": [
        {
          "city": "West Lafayette",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01005381"
    },
    {
      "nct_id": "NCT01709474",
      "title": "Vitamin D3 Treatment in Pediatric Systemic Lupus Erythematosus",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Systemic Lupus Erythematosus"
      ],
      "interventions": [
        {
          "name": "Vitamin D3 6000 IU",
          "type": "DRUG"
        },
        {
          "name": "Vitamin D3 400 IU",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "5 Years to 20 Years"
      },
      "enrollment_count": 7,
      "start_date": "2013-06",
      "completion_date": "2014-07",
      "has_results": true,
      "last_update_posted_date": "2015-12-17",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 13,
      "location_summary": "Los Angeles, California • Palo Alto, California • San Francisco, California + 9 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01709474"
    },
    {
      "nct_id": "NCT01859390",
      "title": "Effects of an Antioxidant-Enriched Multivitamin Supplement on Inflammation and Oxidative Stress in Cystic Fibrosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "AquADEKs-2",
          "type": "DRUG"
        },
        {
          "name": "control multivitamin",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "10 Years and older"
      },
      "enrollment_count": 73,
      "start_date": "2013-06",
      "completion_date": "2016-07",
      "has_results": true,
      "last_update_posted_date": "2017-07-14",
      "last_synced_at": "2026-10-14T20:17:49.911Z",
      "location_count": 15,
      "location_summary": "Tucson, Arizona • Aurora, Colorado • Orlando, Florida + 12 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01859390"
    }
  ]
}