{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+antioxidant+concentrate",
    "query": {
      "intervention": "Placebo antioxidant concentrate"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T04:21:14.310Z",
  "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": "NCT03522779",
      "title": "Antioxidant Responses to Exercise and Cherry Consumption",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dietary Modification"
      ],
      "interventions": [
        {
          "name": "Tart cherry Juice",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "High-fat meal",
          "type": "OTHER"
        },
        {
          "name": "Exercise",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University of Georgia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "MALE",
        "summary": "18 Years to 30 Years · Male only"
      },
      "enrollment_count": 13,
      "start_date": "2016-11",
      "completion_date": "2017-07-01",
      "has_results": false,
      "last_update_posted_date": "2018-05-11",
      "last_synced_at": "2026-09-25T04:21:14.310Z",
      "location_count": 1,
      "location_summary": "Athens, Georgia",
      "locations": [
        {
          "city": "Athens",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03522779"
    },
    {
      "nct_id": "NCT00842543",
      "title": "Fruit and Vegetable Juice Concentrate Effects on RBP4 and Antioxidant Capacity in Lean and Overweight 6-10 Year Old Boys",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Fruit and Vegetable Juice Concentrate (FVJC)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Nemours Children's Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "10 Years",
        "sex": "MALE",
        "summary": "6 Years to 10 Years · Male only"
      },
      "enrollment_count": 39,
      "start_date": "2008-07",
      "completion_date": "2011-08",
      "has_results": true,
      "last_update_posted_date": "2013-09-26",
      "last_synced_at": "2026-09-25T04:21:14.310Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00842543"
    },
    {
      "nct_id": "NCT03617302",
      "title": "Inorganic Nitrate Supplementation on Cerebrovascular Aging and Arterial Stiffness Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Aging",
        "Arterial Stiffness",
        "Endothelial Dysfunction",
        "Hypertension",
        "Cognitive Decline"
      ],
      "interventions": [
        {
          "name": "Experimental: Nitrate-containing",
          "type": "DRUG"
        },
        {
          "name": "Placebo: Nitrate-depleted",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gary L. Pierce, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "50 Years to 79 Years"
      },
      "enrollment_count": 16,
      "start_date": "2018-11-01",
      "completion_date": "2024-06-30",
      "has_results": true,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-09-25T04:21:14.310Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03617302"
    },
    {
      "nct_id": "NCT00954902",
      "title": "Effects of Antioxidants on Cardiovascular Risk Measures (Spice Study)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular",
        "Psychological Stress"
      ],
      "interventions": [
        {
          "name": "High Antioxidant Spice Blend",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Trier Psychological Stressor",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Placebo antioxidant concentrate",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "30 Years to 65 Years"
      },
      "enrollment_count": 32,
      "start_date": "2009-08",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2018-01-25",
      "last_synced_at": "2026-09-25T04:21:14.310Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00954902"
    },
    {
      "nct_id": "NCT00090402",
      "title": "Fish Oil and Alpha Lipoic Acid in Treating Alzheimer's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Alzheimer's Disease",
        "Oxidative Stress",
        "Dementia",
        "Hyperlipidemia",
        "Inflammation"
      ],
      "interventions": [
        {
          "name": "Fish Oil",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Lipoic Acid",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Fish Oil Placebo",
          "type": "OTHER"
        },
        {
          "name": "Lipoic Acid Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 39,
      "start_date": "2004-04",
      "completion_date": "2007-08",
      "has_results": true,
      "last_update_posted_date": "2017-07-21",
      "last_synced_at": "2026-09-25T04:21:14.310Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00090402"
    },
    {
      "nct_id": "NCT00655031",
      "title": "Trial to Evaluate the Use of Pomegranate Concentrate (POMx) for the Prevention of Experimental Rhinovirus Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Common Cold"
      ],
      "interventions": [
        {
          "name": "Pomegranate Concentrate (POMx)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "POM Wonderful LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 150,
      "start_date": "2008-04",
      "completion_date": "2008-07",
      "has_results": false,
      "last_update_posted_date": "2008-08-18",
      "last_synced_at": "2026-09-25T04:21:14.310Z",
      "location_count": 3,
      "location_summary": "Huntsville, Alabama • Melbourne, Florida • Charlottesville, Virginia",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Melbourne",
          "state": "Florida"
        },
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00655031"
    },
    {
      "nct_id": "NCT02213588",
      "title": "Effects of Plant Concentrate Blend on Oxidative Stress in Healthy Humans",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "AOX blend",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Access Business Group",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 120,
      "start_date": "2013-07",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2014-08-11",
      "last_synced_at": "2026-09-25T04:21:14.310Z",
      "location_count": 1,
      "location_summary": "Buena Park, California",
      "locations": [
        {
          "city": "Buena Park",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02213588"
    }
  ]
}