{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Rayaldee",
    "query": {
      "intervention": "Rayaldee"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 34,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Rayaldee&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-13T08:49:45.332Z",
  "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": "NCT01633658",
      "title": "The Variability of 25-hydroxyvitamin D Response From Crystalline 25-hydroxyvitamin D3",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "25(OH)D",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "20 Years to 60 Years"
      },
      "enrollment_count": 0,
      "start_date": "2012-11",
      "completion_date": "2013-11",
      "has_results": false,
      "last_update_posted_date": "2013-05-29",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01633658"
    },
    {
      "nct_id": "NCT00473239",
      "title": "The Pharmacokinetics of a Single Large Dose of Vitamin D3",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "cholecalciferol.",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2006-10",
      "completion_date": "2007-03",
      "has_results": false,
      "last_update_posted_date": "2015-05-04",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00473239"
    },
    {
      "nct_id": "NCT07565064",
      "title": "ALPCO 25(OH) Vitamin D CLIA Kit - Fresh Versus Frozen Serum and Plasma Stability Study",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vitamin D Deficiency",
        "Vitamin D Insufficiency",
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "ALPCO 25(OH) Vitamin D CLIA Kit",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "American Laboratory Products Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2026-04-18",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-05-04",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 1,
      "location_summary": "Salem, New Hampshire",
      "locations": [
        {
          "city": "Salem",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07565064"
    },
    {
      "nct_id": "NCT01012414",
      "title": "Effect of Vitamin D Supplement on Inflammation Markers in High-Risk Cardiovascular Patients With Chronic Kidney Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Coronary Artery Disease",
        "Chronic Kidney Disease",
        "Hypovitaminosis D",
        "Secondary Hyperparathyroidism"
      ],
      "interventions": [
        {
          "name": "paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2010-01",
      "completion_date": "2011-05",
      "has_results": true,
      "last_update_posted_date": "2014-05-20",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01012414"
    },
    {
      "nct_id": "NCT00832533",
      "title": "The Response of Serum 25-Hydroxyvitamin D to Incidental Ultraviolet Light Exposure",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Melanoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "New Mexico Cancer Research Alliance",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2008-11",
      "completion_date": "2010-01",
      "has_results": false,
      "last_update_posted_date": "2015-09-28",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00832533"
    },
    {
      "nct_id": "NCT03644212",
      "title": "Vitamin D Increases Serum Levels of the Soluble Receptor for Advanced Glycation End Products in Women With PCOS",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Polycystic Ovary Syndrome",
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Maimonides Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "48 Years",
        "sex": "FEMALE",
        "summary": "16 Years to 48 Years · Female only"
      },
      "enrollment_count": 79,
      "start_date": "2012-07",
      "completion_date": "2013-10",
      "has_results": true,
      "last_update_posted_date": "2020-01-13",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 1,
      "location_summary": "Brooklyn, New York",
      "locations": [
        {
          "city": "Brooklyn",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03644212"
    },
    {
      "nct_id": "NCT04551911",
      "title": "Safety and Efficacy of Rayaldee for Treating Mild to Moderate COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19",
        "Coronavirus",
        "SARS-CoV2 Infection"
      ],
      "interventions": [
        {
          "name": "Rayaldee",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "OPKO Health, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 171,
      "start_date": "2020-11-02",
      "completion_date": "2021-10-08",
      "has_results": true,
      "last_update_posted_date": "2024-05-28",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 10,
      "location_summary": "San Francisco, California • Miami, Florida • Evanston, Illinois + 6 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Evanston",
          "state": "Illinois"
        },
        {
          "city": "Laurel",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04551911"
    },
    {
      "nct_id": "NCT04780776",
      "title": "Evaluating the Effect of SOLIUS UV Light Source in Improving Vitamin D Status",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency",
        "Vitamin D Insufficiency"
      ],
      "interventions": [
        {
          "name": "UVB treatment",
          "type": "DEVICE"
        },
        {
          "name": "Sham comparator",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 69,
      "start_date": "2022-02-23",
      "completion_date": "2023-11-02",
      "has_results": true,
      "last_update_posted_date": "2024-10-22",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04780776"
    },
    {
      "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": "2026-09-13T08:49:45.332Z",
      "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": "NCT01698840",
      "title": "Effect of Vitamin D in Diets of Preterm Infants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Premature Infants"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 39,
      "start_date": "2013-01",
      "completion_date": "2016-07-30",
      "has_results": false,
      "last_update_posted_date": "2026-01-29",
      "last_synced_at": "2026-09-13T08:49:45.332Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01698840"
    }
  ]
}