{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=isoflavones",
    "query": {
      "intervention": "isoflavones"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 98,
    "total_pages": 10,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=isoflavones&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-11T10:52:20.156Z",
  "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": "NCT00499408",
      "title": "Vitamin D and Soy Supplements in Treating Patients With Recurrent Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "soy",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "MALE",
        "summary": "18 Years to 120 Years · Male only"
      },
      "enrollment_count": 26,
      "start_date": "2007-04",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2018-11-21",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00499408"
    },
    {
      "nct_id": "NCT00031746",
      "title": "Soy Protein Supplement in Preventing Prostate Cancer in Patients With Elevated Prostate-Specific Antigen Levels",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "soy protein isolate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "casein proteins",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "50 Years and older · Male only"
      },
      "enrollment_count": 26,
      "start_date": "2000-02",
      "completion_date": "2006-06",
      "has_results": false,
      "last_update_posted_date": "2016-07-19",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 5,
      "location_summary": "Washington D.C., District of Columbia • Syracuse, New York • Winston-Salem, North Carolina + 1 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Syracuse",
          "state": "New York"
        },
        {
          "city": "Syracuse",
          "state": "New York"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00031746"
    },
    {
      "nct_id": "NCT00665860",
      "title": "Safety and Effectiveness of Soy Phytoestrogens to Prevent Bone Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Soy isoflavones",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "40 Years to 60 Years · Female only"
      },
      "enrollment_count": 403,
      "start_date": "2001-04",
      "completion_date": "2006-06",
      "has_results": false,
      "last_update_posted_date": "2020-11-27",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 3,
      "location_summary": "Davis, California • Athens, Georgia • Houston, Texas",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        },
        {
          "city": "Athens",
          "state": "Georgia"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00665860"
    },
    {
      "nct_id": "NCT00998920",
      "title": "Multi-Dose Safety and Pharmacokinetic Study of S-Equol in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "S-equol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ausio Pharmaceuticals, LLC",
      "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": 41,
      "start_date": "2008-12",
      "completion_date": "2009-04",
      "has_results": false,
      "last_update_posted_date": "2012-07-12",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 1,
      "location_summary": "Tacoma, Washington",
      "locations": [
        {
          "city": "Tacoma",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00998920"
    },
    {
      "nct_id": "NCT00203255",
      "title": "Clinical Study Examining Use of an Over-the-Counter Supplement for the Prevention of Menstrually-Associated Migraine Headache",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Migraine Headache"
      ],
      "interventions": [
        {
          "name": "Soy Isoflavones",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 25,
      "start_date": "2003-05",
      "completion_date": "2005-03",
      "has_results": false,
      "last_update_posted_date": "2009-01-23",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00203255"
    },
    {
      "nct_id": "NCT02624388",
      "title": "Study of Genistein in Pediatric Oncology Patients (UVA-Gen001)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Lymphoma",
        "Childhood Lymphoma",
        "Solid Tumor",
        "Childhood Solid Tumor",
        "Neuroblastoma",
        "Ewing Sarcoma",
        "Hodgkin Lymphoma",
        "Non-Hodgkin Lymphoma",
        "Rhabdomyosarcoma",
        "Soft Tissue Sarcoma",
        "Medulloblastoma",
        "Germ Cell Tumor",
        "Wilms Tumor",
        "Brain Neoplasms",
        "Medulloblastoma, Childhood",
        "Neuroectodermal Tumors, Primitive"
      ],
      "interventions": [
        {
          "name": "Genistein",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Year to 21 Years"
      },
      "enrollment_count": 4,
      "start_date": "2016-08",
      "completion_date": "2021-09",
      "has_results": true,
      "last_update_posted_date": "2024-05-06",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02624388"
    },
    {
      "nct_id": "NCT00590538",
      "title": "Phenylbutyrate/Genistein Duotherapy in Delta F508-Heterozygotes (for Cystic Fibrosis)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "Sodium 4-Phenylbutyrate",
          "type": "DRUG"
        },
        {
          "name": "Genistein (Unconjugated Isoflavones 100)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2003-02",
      "completion_date": "2008-12",
      "has_results": true,
      "last_update_posted_date": "2011-06-30",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00590538"
    },
    {
      "nct_id": "NCT02375113",
      "title": "Soy as an Innovative Dietary Component in Abdominal Obesity Management Amongst Peri- and Early Menopausal Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Central Obesity"
      ],
      "interventions": [
        {
          "name": "soy supplementation",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "The University of Texas at San Antonio",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "45 Years to 60 Years · Female only"
      },
      "enrollment_count": 12,
      "start_date": "2012-09",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2024-05-10",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02375113"
    },
    {
      "nct_id": "NCT03099590",
      "title": "Alkontrol-herbal Effects on Alcohol Drinking",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alcohol Drinking",
        "Alcohol Use Disorder",
        "Alcohol Abstinence"
      ],
      "interventions": [
        {
          "name": "kudzu extract, puerarin",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo control",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Mclean Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "21 Years to 60 Years"
      },
      "enrollment_count": 28,
      "start_date": "2018-01-01",
      "completion_date": "2020-07-01",
      "has_results": false,
      "last_update_posted_date": "2020-07-29",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 1,
      "location_summary": "Belmont, Massachusetts",
      "locations": [
        {
          "city": "Belmont",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03099590"
    },
    {
      "nct_id": "NCT02766478",
      "title": "Genistein Supplementation to Mitigate Cardiometabolic Dysfunction in Patients Undergoing Androgen Deprivation Therapy for Prostate Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Genistein",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory 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": 10,
      "start_date": "2017-10-16",
      "completion_date": "2021-07-23",
      "has_results": true,
      "last_update_posted_date": "2022-09-27",
      "last_synced_at": "2026-09-11T10:52:20.156Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02766478"
    }
  ]
}