{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+E+placebo&page=2",
    "query": {
      "intervention": "Vitamin E placebo",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 133,
    "total_pages": 14,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+E+placebo&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+E+placebo&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T22:59:36.236Z",
  "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": "NCT00040378",
      "title": "Prevention of Alzheimer's Disease by Vitamin E and Selenium (PREADVISE)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alzheimer Disease"
      ],
      "interventions": [
        {
          "name": "alphatocopherol",
          "type": "DRUG"
        },
        {
          "name": "Selenium",
          "type": "DRUG"
        },
        {
          "name": "Placebo replacement for vitamin E",
          "type": "DRUG"
        },
        {
          "name": "Placebo replacement for Selenium",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Frederick Schmitt",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "90 Years",
        "sex": "MALE",
        "summary": "60 Years to 90 Years · Male only"
      },
      "enrollment_count": 4246,
      "start_date": "2002-05",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2018-03-14",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 84,
      "location_summary": "Birmingham, Alabama • Anchorage, Alaska • Chula Vista, California + 70 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00040378"
    },
    {
      "nct_id": "NCT01320527",
      "title": "A Clinical Trial of a Vitamin/Nutriceutical Formulation for Alzheimer's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alzheimer's Disease",
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "Nutriceutical formulation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University of Massachusetts, Worcester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 135,
      "start_date": "2008-08",
      "completion_date": "2012-04",
      "has_results": false,
      "last_update_posted_date": "2016-03-03",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 8,
      "location_summary": "Naples, Florida • Baltimore, Maryland • Ayer, Massachusetts + 5 more",
      "locations": [
        {
          "city": "Naples",
          "state": "Florida"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Ayer",
          "state": "Massachusetts"
        },
        {
          "city": "Groton",
          "state": "Massachusetts"
        },
        {
          "city": "Lawrence",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01320527"
    },
    {
      "nct_id": "NCT00056329",
      "title": "Vitamin E in Aging Persons With Down Syndrome",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Down Syndrome",
        "Alzheimer Disease"
      ],
      "interventions": [
        {
          "name": "Vitamin E",
          "type": "DRUG"
        },
        {
          "name": "multivitamin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "New York State Institute for Basic Research",
      "sponsor_class": "OTHER_GOV",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 350,
      "start_date": "2002-04",
      "completion_date": "2012-05",
      "has_results": false,
      "last_update_posted_date": "2012-05-04",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 14,
      "location_summary": "Farmington, Connecticut • Tampa, Florida • Atlanta, Georgia + 10 more",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00056329"
    },
    {
      "nct_id": "NCT04054505",
      "title": "Effectiveness of a Nutraceutical in Raising Circulating Serum Vitamin, Mineral and Amino Acid Levels in Patients.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin Deficiency"
      ],
      "interventions": [
        {
          "name": "EZPAK",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Optimal Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "26 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "26 Years to 75 Years"
      },
      "enrollment_count": 275,
      "start_date": "2019-01-02",
      "completion_date": "2021-01-04",
      "has_results": false,
      "last_update_posted_date": "2024-07-10",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04054505"
    },
    {
      "nct_id": "NCT00117403",
      "title": "Anti-Oxidant Treatment of Alzheimer's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Alzheimer's Disease"
      ],
      "interventions": [
        {
          "name": "Vitamin E, Vitamin C, and Alpha-lipoic Acid",
          "type": "DRUG"
        },
        {
          "name": "Coenzyme Q",
          "type": "DRUG"
        },
        {
          "name": "Placebo capsules",
          "type": "DRUG"
        },
        {
          "name": "Placebo wafers",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute on Aging (NIA)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "60 Years to 85 Years"
      },
      "enrollment_count": 75,
      "start_date": "2006-01",
      "completion_date": "2007-09",
      "has_results": false,
      "last_update_posted_date": "2009-04-03",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 13,
      "location_summary": "Tucson, Arizona • Irvine, California • La Jolla, California + 10 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Miami Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00117403"
    },
    {
      "nct_id": "NCT00758914",
      "title": "Vitamin E and Infection in the Elderly",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Respiratory Infection",
        "Elderly"
      ],
      "interventions": [
        {
          "name": "Vitamin E",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Tufts University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": null,
      "start_date": "1997-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2008-09-25",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00758914"
    },
    {
      "nct_id": "NCT01002547",
      "title": "Prevalence of Non-alcoholic Fatty Liver Disease (NAFLD) in Hispanics With Diabetes Mellitus Type 2 (T2DM) and Role of Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Nonalcoholic Steatohepatitis"
      ],
      "interventions": [
        {
          "name": "pioglitazone-placebo",
          "type": "DRUG"
        },
        {
          "name": "pioglitazone",
          "type": "DRUG"
        },
        {
          "name": "Vitamin E",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin E-placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 105,
      "start_date": "2010-06-24",
      "completion_date": "2016-12-31",
      "has_results": true,
      "last_update_posted_date": "2018-09-11",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida • San Antonio, Texas",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01002547"
    },
    {
      "nct_id": "NCT01073332",
      "title": "The Effects of a Dietary Supplement on Exercise Performance in Healthy Older Adults\"",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Excessive Physical Exercise, Unspecified"
      ],
      "interventions": [
        {
          "name": "Arginine antioxidant supplements",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "50 Years to 75 Years"
      },
      "enrollment_count": 16,
      "start_date": "2004-10",
      "completion_date": "2005-02",
      "has_results": false,
      "last_update_posted_date": "2015-05-08",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01073332"
    },
    {
      "nct_id": "NCT01178892",
      "title": "MsFLASH-02: Interventions for Relief of Menopausal Symptoms: A 3-by-2 Factorial Design Examining Yoga, Exercise, and Omega-3 Supplementation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hot Flashes",
        "Menopause",
        "Vasomotor Symptoms"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Omega-3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Yoga",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual Activity",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "BEHAVIORAL"
      ],
      "sponsor": "Fred Hutchinson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "62 Years",
        "sex": "FEMALE",
        "summary": "40 Years to 62 Years · Female only"
      },
      "enrollment_count": 355,
      "start_date": "2010-11",
      "completion_date": "2012-05",
      "has_results": false,
      "last_update_posted_date": "2014-08-22",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 3,
      "location_summary": "Oakland, California • Indianapolis, Indiana • Seattle, Washington",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01178892"
    },
    {
      "nct_id": "NCT02876315",
      "title": "The Effect of Combinatorial Nutritional Supplementation on Immune Function in Healthy Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Redoxon VI",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Oregon State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "55 Years to 75 Years"
      },
      "enrollment_count": 42,
      "start_date": "2016-12",
      "completion_date": "2019-12",
      "has_results": false,
      "last_update_posted_date": "2022-12-01",
      "last_synced_at": "2026-10-06T22:59:36.236Z",
      "location_count": 1,
      "location_summary": "Corvallis, Oregon",
      "locations": [
        {
          "city": "Corvallis",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02876315"
    }
  ]
}