{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+in+arm+A+and+Vitamin+D+in+arm+B",
    "query": {
      "intervention": "Placebo in arm A and Vitamin D in arm B"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-11T05:34:19.445Z",
  "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": "NCT01744821",
      "title": "Vitamin D for Women at Increased Risk of Developing Ovarian, Fallopian, or Primary Peritoneal Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Ovarian Cancer",
        "Fallopian Tube Cancer",
        "Primary Peritoneal Cancer"
      ],
      "interventions": [
        {
          "name": "Arm A: Vitamin D3 Group",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Northwestern University",
      "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": 7,
      "start_date": "2012-10",
      "completion_date": "2015-04",
      "has_results": true,
      "last_update_posted_date": "2015-07-23",
      "last_synced_at": "2026-10-11T05:34:19.445Z",
      "location_count": 2,
      "location_summary": "Chicago, Illinois • Evanston, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Evanston",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01744821"
    },
    {
      "nct_id": "NCT00279461",
      "title": "Vitamin D Deficiency Causes Immune Dysfunction and Enables or Perpetuates the Development of Rheumatoid Arthritis",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Arthritis, Rheumatoid",
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Placebo in arm A and Vitamin D in arm B",
          "type": "DRUG"
        },
        {
          "name": "vitamin D 3 for arm A ,and matching placebo for arm B",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2009-05",
      "completion_date": "2011-05",
      "has_results": false,
      "last_update_posted_date": "2015-08-04",
      "last_synced_at": "2026-10-11T05:34:19.445Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00279461"
    },
    {
      "nct_id": "NCT03418038",
      "title": "Ascorbic Acid and Chemotherapy for the Treatment of Relapsed or Refractory Lymphoma, CCUS, and Chronic Myelomonocytic Leukemia",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Clonal Cytopenia of Undetermined Significance",
        "High Grade B-Cell Lymphoma With MYC and BCL2 or BCL6 Rearrangements",
        "Recurrent Diffuse Large B-Cell Lymphoma",
        "Recurrent Hodgkin Lymphoma",
        "Recurrent Lymphoma",
        "Refractory Diffuse Large B-Cell Lymphoma",
        "Refractory Lymphoma",
        "Chronic Myelomonocytic Leukemia"
      ],
      "interventions": [
        {
          "name": "Ascorbic Acid",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Cisplatin",
          "type": "DRUG"
        },
        {
          "name": "Cytarabine",
          "type": "DRUG"
        },
        {
          "name": "Dexamethasone",
          "type": "DRUG"
        },
        {
          "name": "Etoposide",
          "type": "DRUG"
        },
        {
          "name": "Gemcitabine Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Ifosfamide",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Oxaliplatin",
          "type": "DRUG"
        },
        {
          "name": "Placebo Administration",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Rituximab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Decitabine",
          "type": "DRUG"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Core Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Aspiration",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiography",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Central Venous Cannula Insertion",
          "type": "PROCEDURE"
        },
        {
          "name": "Portacath Placement",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Decitabine and Cedazuridine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG",
        "OTHER",
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2018-03-23",
      "completion_date": "2033-11-02",
      "has_results": false,
      "last_update_posted_date": "2026-09-28",
      "last_synced_at": "2026-10-11T05:34:19.445Z",
      "location_count": 4,
      "location_summary": "Mankato, Minnesota • Rochester, Minnesota • Eau Claire, Wisconsin + 1 more",
      "locations": [
        {
          "city": "Mankato",
          "state": "Minnesota"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Eau Claire",
          "state": "Wisconsin"
        },
        {
          "city": "La Crosse",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03418038"
    },
    {
      "nct_id": "NCT04877366",
      "title": "Evaluate Effects of Sprinkled Format REDUCOSE in a Carbohydrate-rich, Mixed Meal on Post-prandial Glycemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dietary Supplement"
      ],
      "interventions": [
        {
          "name": "Dietary Supplement: Sprinkled Format REDUCOSE.",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Reference control",
          "type": "OTHER"
        },
        {
          "name": "Active comparator",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Société des Produits Nestlé (SPN)",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2021-07-21",
      "completion_date": "2021-12-01",
      "has_results": false,
      "last_update_posted_date": "2024-10-15",
      "last_synced_at": "2026-10-11T05:34:19.445Z",
      "location_count": 1,
      "location_summary": "Tustin, California",
      "locations": [
        {
          "city": "Tustin",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04877366"
    },
    {
      "nct_id": "NCT00362518",
      "title": "Vitamins C and Vitamin E and Cardiovascular Risk",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Diabetes"
      ],
      "interventions": [
        {
          "name": "Study Arm A",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Study Arm B",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Study Arm C",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Study Arm D",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of New Mexico",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 12,
      "start_date": "2004-07",
      "completion_date": "2008-03",
      "has_results": false,
      "last_update_posted_date": "2024-03-12",
      "last_synced_at": "2026-10-11T05:34:19.445Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00362518"
    },
    {
      "nct_id": "NCT01403051",
      "title": "High Dose Vitamin D and Calcium for Bone Health in Individuals Initiating HAART",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HIV-1 Infection"
      ],
      "interventions": [
        {
          "name": "EFV/FTC/TDF",
          "type": "DRUG"
        },
        {
          "name": "Calcium Carbonate",
          "type": "DRUG"
        },
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        },
        {
          "name": "Placebo for calcium carbonate",
          "type": "DRUG"
        },
        {
          "name": "Placebo for vitamin D3",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 167,
      "start_date": "2011-09",
      "completion_date": "2013-02",
      "has_results": true,
      "last_update_posted_date": "2018-10-12",
      "last_synced_at": "2026-10-11T05:34:19.445Z",
      "location_count": 38,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 27 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01403051"
    }
  ]
}