{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Polyphenol+Capsules",
    "query": {
      "intervention": "Polyphenol Capsules"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 46,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Polyphenol+Capsules&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T23:01:15.574Z",
  "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": "NCT01766180",
      "title": "Cerebrovascular and Cognitive Improvement by Resveratrol (resVida) and Fruitflow-II (CCIRF-II)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Memory Impairment"
      ],
      "interventions": [
        {
          "name": "Fruitflow-II",
          "type": "DRUG"
        },
        {
          "name": "resVida",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Neurolgy Institute for Brain Health and Fitness",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "50 Years to 80 Years"
      },
      "enrollment_count": 80,
      "start_date": "2013-01",
      "completion_date": "2016-02",
      "has_results": false,
      "last_update_posted_date": "2015-04-21",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Lutherville, Maryland",
      "locations": [
        {
          "city": "Lutherville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01766180"
    },
    {
      "nct_id": "NCT04717726",
      "title": "Exercise, Milk Thistle, and Lactobacillus to Influence Plasma Bilirubin",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Milk Thistle (MT)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Lactobacillus Gasseri (LAC)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Exercise (EX)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control (CON)",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "BEHAVIORAL"
      ],
      "sponsor": "Kyle Flack",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 42,
      "start_date": "2021-02-24",
      "completion_date": "2023-07-19",
      "has_results": false,
      "last_update_posted_date": "2023-07-28",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04717726"
    },
    {
      "nct_id": "NCT03824041",
      "title": "Effects of Aronia Berries on Vascular Endothelial Function and the Gut Microbiota in Middle-Aged/Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Endothelial Dysfunction",
        "Aging"
      ],
      "interventions": [
        {
          "name": "Aronia full spectrum - half dose",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Aronia full spectrum - full dose",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Colorado State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "45 Years to 75 Years"
      },
      "enrollment_count": 24,
      "start_date": "2019-02-11",
      "completion_date": "2021-07-26",
      "has_results": false,
      "last_update_posted_date": "2023-07-03",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Fort Collins, Colorado",
      "locations": [
        {
          "city": "Fort Collins",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03824041"
    },
    {
      "nct_id": "NCT02909686",
      "title": "Effects of Botanical Microglia Modulators in Gulf War Illness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Gulf War Illness"
      ],
      "interventions": [
        {
          "name": "Boswellia Serrata",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Curcumin",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Epimedium",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Fisetin",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Luteolin",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Nettle",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Pycnogenol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Reishi Mushroom",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Resveratrol",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "39 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "39 Years to 65 Years · Male only"
      },
      "enrollment_count": 36,
      "start_date": "2016-07",
      "completion_date": "2022-09",
      "has_results": true,
      "last_update_posted_date": "2025-01-24",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02909686"
    },
    {
      "nct_id": "NCT01983943",
      "title": "Olive Oil and Cardiovascular Health",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Disease",
        "Endothelial Function"
      ],
      "interventions": [
        {
          "name": "Hydroxytyrosol, the active ingredient in olive oil.",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Nutrition counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Endopat",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "BEHAVIORAL",
        "DEVICE"
      ],
      "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": 0,
      "start_date": "2013-08",
      "completion_date": "2014-07",
      "has_results": false,
      "last_update_posted_date": "2015-06-03",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01983943"
    },
    {
      "nct_id": "NCT06419231",
      "title": "Effectiveness of a Butyrate Formulation and Butyrate + Polyphenol Formulation on Gut Health, Permeability and Associated Symptoms",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Gut Health"
      ],
      "interventions": [
        {
          "name": "Butyrate Formulation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Butyrate + Polyphenol Formulation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Supplement Formulators, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "21 Years to 70 Years"
      },
      "enrollment_count": 143,
      "start_date": "2023-10-31",
      "completion_date": "2025-06-18",
      "has_results": false,
      "last_update_posted_date": "2026-01-13",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Fort Lauderdale, Florida",
      "locations": [
        {
          "city": "Fort Lauderdale",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06419231"
    },
    {
      "nct_id": "NCT02006394",
      "title": "Novel Dietary Interventions for Treating Insulin Resistance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Insulin Resistance",
        "Obesity",
        "Metabolic Syndrome"
      ],
      "interventions": [
        {
          "name": "Fish Oil",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Polyphenol Capsules",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Corn Oil Capsules",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Corn starch capsules",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Reduced glycemic index bread products",
          "type": "OTHER"
        },
        {
          "name": "Market variety bread products",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "21 Years to 55 Years"
      },
      "enrollment_count": 41,
      "start_date": "2012-01",
      "completion_date": "2013-11",
      "has_results": false,
      "last_update_posted_date": "2013-12-12",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02006394"
    },
    {
      "nct_id": "NCT04596722",
      "title": "Oral Pomegranate Extract on the Microbiome and Skin Biophysical Properties",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Human Microbiome"
      ],
      "interventions": [
        {
          "name": "Pomella",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Integrative Skin Science and Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "25 Years to 55 Years"
      },
      "enrollment_count": 18,
      "start_date": "2020-11-09",
      "completion_date": "2021-03-24",
      "has_results": false,
      "last_update_posted_date": "2021-04-13",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Sacramento, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04596722"
    },
    {
      "nct_id": "NCT01751750",
      "title": "Grape Polyphenol Kinetics in Humans",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Grape",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Janet Novotny",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "59 Years",
        "sex": "ALL",
        "summary": "Up to 59 Years"
      },
      "enrollment_count": 16,
      "start_date": "2011-09",
      "completion_date": "2011-09",
      "has_results": false,
      "last_update_posted_date": "2017-05-25",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Beltsville, Maryland",
      "locations": [
        {
          "city": "Beltsville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01751750"
    },
    {
      "nct_id": "NCT01185067",
      "title": "Physiological Effects of Grape Seed Extract in Diastolic Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Diastolic Heart Failure",
        "Hypertensive Heart Disease",
        "Heart Failure With Preserved Ejection Fraction",
        "Hypertension",
        "Oxidative Stress"
      ],
      "interventions": [
        {
          "name": "grape seed extract (MegaNatural BP, Polyphenolics, Inc.)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2010-10",
      "completion_date": "2014-02-24",
      "has_results": false,
      "last_update_posted_date": "2017-06-06",
      "last_synced_at": "2026-09-06T23:01:15.574Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01185067"
    }
  ]
}