{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=selenium+placebo",
    "query": {
      "intervention": "selenium placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 35,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=selenium+placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T14:07:36.387Z",
  "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": "NCT02421887",
      "title": "Males, Antioxidants, and Infertility Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Male Infertility"
      ],
      "interventions": [
        {
          "name": "Antioxidant Supplement",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 171,
      "start_date": "2015-12",
      "completion_date": "2018-12",
      "has_results": true,
      "last_update_posted_date": "2019-09-04",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 10,
      "location_summary": "Los Angeles, California • San Francisco, California • Sunnyvale, California + 7 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Sunnyvale",
          "state": "California"
        },
        {
          "city": "Augusta",
          "state": "Georgia"
        },
        {
          "city": "Southfield",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02421887"
    },
    {
      "nct_id": "NCT00565214",
      "title": "Effect of Supplementary Vitamins on Oxidant Gene Expression in the Lungs of Healthy Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Obstructive Pulmonary Disease (COPD)"
      ],
      "interventions": [
        {
          "name": "Group 1",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Group 2",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 46,
      "start_date": "2007-09",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2017-05-25",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00565214"
    },
    {
      "nct_id": "NCT01289925",
      "title": "Effect of Selenium Intervention on Inflammation in Older Adults",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Inflammation"
      ],
      "interventions": [
        {
          "name": "Selenium",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Sugar Pill Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "70 Years",
        "maximum_age": "110 Years",
        "sex": "ALL",
        "summary": "70 Years to 110 Years"
      },
      "enrollment_count": 182,
      "start_date": "2006-02",
      "completion_date": "2012-01-20",
      "has_results": false,
      "last_update_posted_date": "2018-04-09",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01289925"
    },
    {
      "nct_id": "NCT03062384",
      "title": "AT-001 for Long-term Preservation of Brain Health in Aging",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Oxidative Stress"
      ],
      "interventions": [
        {
          "name": "AT-001",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Kentucky",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 95,
      "start_date": "2016-05",
      "completion_date": "2018-12-31",
      "has_results": false,
      "last_update_posted_date": "2019-08-20",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03062384"
    },
    {
      "nct_id": "NCT07271316",
      "title": "Alii Supplement Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Nutrient Deficiency",
        "Happiness",
        "Digestive Health",
        "Vulnerability to Disease",
        "Mood Swings",
        "Energy"
      ],
      "interventions": [
        {
          "name": "Alii Supplement",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Texas Christian University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "25 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 25 Years · Female only"
      },
      "enrollment_count": 16,
      "start_date": "2026-01-12",
      "completion_date": "2026-04-20",
      "has_results": true,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 1,
      "location_summary": "Fort Worth, Texas",
      "locations": [
        {
          "city": "Fort Worth",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07271316"
    },
    {
      "nct_id": "NCT00008385",
      "title": "Selenium in Preventing Tumor Growth in Patients With Previously Resected Stage I Non-small Cell Lung Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Lung Cancer"
      ],
      "interventions": [
        {
          "name": "placebo",
          "type": "OTHER"
        },
        {
          "name": "selenium",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "ECOG-ACRIN Cancer Research Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1772,
      "start_date": "2000-12-18",
      "completion_date": "2019-11",
      "has_results": true,
      "last_update_posted_date": "2023-07-05",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 515,
      "location_summary": "Mobile, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 339 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00008385"
    },
    {
      "nct_id": "NCT00736645",
      "title": "Selenomethionine and Finasteride Before Surgery or Radiation Therapy in Treating Patients With Stage I or Stage II Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "selenomethionine",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "finasteride",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Roswell Park Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 55,
      "start_date": "2008-08",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2023-10-02",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00736645"
    },
    {
      "nct_id": "NCT01112449",
      "title": "Influence of Selenium on Prostate Cancer Related Biomarkers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Effect of Selenium on Oxidative Stress in Healthy Men"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "selenomethionine",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "low dose selenized-yeast",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "high dose selenized-yeast",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Milton S. Hershey Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "79 Years",
        "sex": "MALE",
        "summary": "20 Years to 79 Years · Male only"
      },
      "enrollment_count": 130,
      "start_date": "2008-05",
      "completion_date": "2014-05",
      "has_results": false,
      "last_update_posted_date": "2015-07-10",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 1,
      "location_summary": "Hershey, Pennsylvania",
      "locations": [
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01112449"
    },
    {
      "nct_id": "NCT00572741",
      "title": "Treating Oxidative Stress and the Metabolic Pathology of Autism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Autistic Disorder"
      ],
      "interventions": [
        {
          "name": "B12",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "folate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "B complex",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "vitamin C",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "cod liver oil",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Mineral complex",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "carnitine",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Arkansas Children's Hospital Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "7 Years",
        "sex": "ALL",
        "summary": "3 Years to 7 Years"
      },
      "enrollment_count": 39,
      "start_date": "2008-06",
      "completion_date": "2016-04",
      "has_results": false,
      "last_update_posted_date": "2016-05-05",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 1,
      "location_summary": "Little Rock, Arkansas",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00572741"
    },
    {
      "nct_id": "NCT00133978",
      "title": "Trial of Glutamine and Antioxidant Supplementation in Critically Ill Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Critical Illness",
        "Sepsis",
        "Multiple Organ Failure"
      ],
      "interventions": [
        {
          "name": "Glutamine",
          "type": "OTHER"
        },
        {
          "name": "Antioxidants",
          "type": "OTHER"
        },
        {
          "name": "Glutamine + Antioxidants",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Daren K. Heyland",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1223,
      "start_date": "2005-04",
      "completion_date": "2012-05",
      "has_results": true,
      "last_update_posted_date": "2021-01-07",
      "last_synced_at": "2026-09-02T14:07:36.387Z",
      "location_count": 5,
      "location_summary": "Aurora, Colorado • Louisville, Kentucky • Dayton, Ohio + 2 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Dayton",
          "state": "Ohio"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00133978"
    }
  ]
}