{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=green+tea+extract",
    "query": {
      "intervention": "green tea extract"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 88,
    "total_pages": 9,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=green+tea+extract&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-08T02:36:35.490Z",
  "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": "NCT03278925",
      "title": "Defined Green Tea Catechin Extract in Preventing Liver Cancer in Participants With Cirrhosis",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cirrhosis"
      ],
      "interventions": [
        {
          "name": "Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Defined Green Tea Catechin Extract",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Pharmacological Study",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Ultrasound",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2018-08-09",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-08-02",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03278925"
    },
    {
      "nct_id": "NCT00718653",
      "title": "Effects of Antioxidants on Human Macular Pigments",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Eye Health"
      ],
      "interventions": [
        {
          "name": "Lutein",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Lutein plus green tea extract",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "National Eye Institute (NEI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "50 Years to 70 Years"
      },
      "enrollment_count": 40,
      "start_date": "2004-09",
      "completion_date": "2007-12",
      "has_results": false,
      "last_update_posted_date": "2009-03-03",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00718653"
    },
    {
      "nct_id": "NCT01856868",
      "title": "Use of (-)-Epicatechin in the Treatment of Becker Muscular Dystrophy (Pilot Study)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Becker Muscular Dystrophy"
      ],
      "interventions": [
        {
          "name": "(-)-epicatechin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Craig McDonald, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "MALE",
        "summary": "18 Years to 60 Years · Male only"
      },
      "enrollment_count": 7,
      "start_date": "2013-05",
      "completion_date": "2018-09",
      "has_results": true,
      "last_update_posted_date": "2021-12-22",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 1,
      "location_summary": "Sacramento, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01856868"
    },
    {
      "nct_id": "NCT00666562",
      "title": "Green Tea Extract in Treating Patients With Nonmetastatic Bladder Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Stage I Bladder Cancer",
        "Stage II Bladder Cancer",
        "Stage III Bladder Cancer"
      ],
      "interventions": [
        {
          "name": "Defined Green Tea Catechin Extract",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Pharmacological Study",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Therapeutic Conventional Surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER",
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 31,
      "start_date": "2008-07-02",
      "completion_date": "2017-06-09",
      "has_results": true,
      "last_update_posted_date": "2017-11-17",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 6,
      "location_summary": "Birmingham, Alabama • Burlington, Massachusetts • Minneapolis, Minnesota + 3 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Burlington",
          "state": "Massachusetts"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00666562"
    },
    {
      "nct_id": "NCT00942422",
      "title": "Green Tea Extract in Treating Patients With Monoclonal Gammopathy of Undetermined Significance and/or Smoldering Multiple Myeloma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Multiple Myeloma and Plasma Cell Neoplasm",
        "Precancerous Condition"
      ],
      "interventions": [
        {
          "name": "defined green tea catechin extract",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "gene expression analysis",
          "type": "GENETIC"
        },
        {
          "name": "protein analysis",
          "type": "GENETIC"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "GENETIC",
        "OTHER"
      ],
      "sponsor": "Barbara Ann Karmanos Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 8,
      "start_date": "2009-11",
      "completion_date": "2012-03",
      "has_results": true,
      "last_update_posted_date": "2015-03-27",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00942422"
    },
    {
      "nct_id": "NCT03866005",
      "title": "Prospective Study of Adjunctive Carotenoids Plus Anti-oxidants in Anti-VEGF Treated Diabetic Macular Edema",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Center-involved Diabetic Macular Edema (CI-DME)"
      ],
      "interventions": [
        {
          "name": "Diabetes Visual Function Study (DiVFuSS) softgels",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "canola oil placebo softgels, 2 per day",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "ZeaVision, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 150,
      "start_date": "2019-11-01",
      "completion_date": "2021-11-01",
      "has_results": false,
      "last_update_posted_date": "2020-07-02",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 2,
      "location_summary": "Olympia, Washington • Tacoma, Washington",
      "locations": [
        {
          "city": "Olympia",
          "state": "Washington"
        },
        {
          "city": "Tacoma",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03866005"
    },
    {
      "nct_id": "NCT05006378",
      "title": "Effect of Chamomile Intake on Blood Coagulation Tests in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coagulation Disorder"
      ],
      "interventions": [
        {
          "name": "Chamomile Tea",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Chamomile Extract Capsule",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo Capsule",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Stony Brook University",
      "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": "2021-08-31",
      "completion_date": "2022-01-19",
      "has_results": false,
      "last_update_posted_date": "2022-02-10",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 1,
      "location_summary": "Stony Brook, New York",
      "locations": [
        {
          "city": "Stony Brook",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05006378"
    },
    {
      "nct_id": "NCT06062186",
      "title": "Acute Effects of Naturally Occurring Tea and Coffee-based Ingredients on Cognitive Performance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cognitive Change"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "AmaTea Guayusa Extract",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Lion's Mane",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "The Center for Applied Health Sciences, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 40,
      "start_date": "2023-04-05",
      "completion_date": "2023-09-15",
      "has_results": false,
      "last_update_posted_date": "2023-10-02",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 1,
      "location_summary": "Canfield, Ohio",
      "locations": [
        {
          "city": "Canfield",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06062186"
    },
    {
      "nct_id": "NCT04898023",
      "title": "Zinc and Green Tea Extract for Community Respiratory Viral Infections",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Viral Infection"
      ],
      "interventions": [
        {
          "name": "zinc-green tea extract-ascorbic acid",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Missouri-Columbia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 17,
      "start_date": "2022-09-21",
      "completion_date": "2023-12-20",
      "has_results": true,
      "last_update_posted_date": "2025-03-07",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04898023"
    },
    {
      "nct_id": "NCT03563365",
      "title": "The Functional and Emotional Benefits of Replenix Power of Three With Resveratrol",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "Replenix Power of 3 Cream with resveratrol",
          "type": "OTHER"
        },
        {
          "name": "Adapalene and Benzoyl peroxide gel, 0.1%/2.5%",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Yardley Dermatology Associates",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "12 Years to 40 Years"
      },
      "enrollment_count": 43,
      "start_date": "2018-06-04",
      "completion_date": "2021-03-02",
      "has_results": false,
      "last_update_posted_date": "2021-04-23",
      "last_synced_at": "2026-09-08T02:36:35.490Z",
      "location_count": 1,
      "location_summary": "Yardley, Pennsylvania",
      "locations": [
        {
          "city": "Yardley",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03563365"
    }
  ]
}