{
  "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": "2026-09-03T18:02:03.562Z",
  "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": "NCT00244478",
      "title": "Soy, Bone and Health in College Females",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoporosis",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Soy Protein Dietary Supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Georgia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "19 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 19 Years · Female only"
      },
      "enrollment_count": 120,
      "start_date": "2005-10",
      "completion_date": "2006-03",
      "has_results": false,
      "last_update_posted_date": "2015-09-25",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Athens, Georgia",
      "locations": [
        {
          "city": "Athens",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00244478"
    },
    {
      "nct_id": "NCT00513916",
      "title": "Effect of Dietary Soy on Estrogens in Breast Fluid, Blood, and Urine Samples From Healthy Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer",
        "Healthy, no Evidence of Disease"
      ],
      "interventions": [
        {
          "name": "soy isoflavones",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Hawaii Cancer Research Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "30 Years to 45 Years · Female only"
      },
      "enrollment_count": 100,
      "start_date": "2006-07",
      "completion_date": "2012-02",
      "has_results": false,
      "last_update_posted_date": "2013-12-19",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Honolulu, Hawaii",
      "locations": [
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00513916"
    },
    {
      "nct_id": "NCT00279942",
      "title": "Effect of Revival Soy on Fibromyalgia Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fibromyalgia"
      ],
      "interventions": [
        {
          "name": "Soy",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "76 Years",
        "sex": "ALL",
        "summary": "18 Years to 76 Years"
      },
      "enrollment_count": 50,
      "start_date": "2006-05",
      "completion_date": "2006-09",
      "has_results": false,
      "last_update_posted_date": "2012-01-06",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00279942"
    },
    {
      "nct_id": "NCT00366860",
      "title": "Effect of Soy Bread on Markers of Bone Metabolism and Cardiovascular Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Osteoporosis",
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Soy bread",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2004-01",
      "completion_date": "2008-05",
      "has_results": false,
      "last_update_posted_date": "2014-12-02",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00366860"
    },
    {
      "nct_id": "NCT03783013",
      "title": "Tomato Juice for Health Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "High Lycopene Tomato Juice With Soy Germ Extract",
          "type": "OTHER"
        },
        {
          "name": "Low Lycopene Tomato Juice",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "USDA Beltsville Human Nutrition Research Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "30 Years to 75 Years"
      },
      "enrollment_count": 19,
      "start_date": "2019-01-08",
      "completion_date": "2021-08-25",
      "has_results": false,
      "last_update_posted_date": "2022-06-10",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Beltsville, Maryland",
      "locations": [
        {
          "city": "Beltsville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03783013"
    },
    {
      "nct_id": "NCT00345813",
      "title": "Soy Supplements in Treating Patients Undergoing Surgery for Localized Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "soy isoflavones",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "soy protein isolate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "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": 62,
      "start_date": "2003-10",
      "completion_date": "2006-07",
      "has_results": false,
      "last_update_posted_date": "2018-08-10",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00345813"
    },
    {
      "nct_id": "NCT02007200",
      "title": "Soy Isoflavones in Preventing Head and Neck Cancer Recurrence in Patients With Stage I-IV Head and Neck Cancer Undergoing Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Recurrent Hypopharyngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Verrucous Carcinoma",
        "Recurrent Lip and Oral Cavity Squamous Cell Carcinoma",
        "Recurrent Oral Cavity Verrucous Carcinoma",
        "Recurrent Oropharyngeal Squamous Cell Carcinoma",
        "Stage I Hypopharyngeal Squamous Cell Carcinoma",
        "Stage I Laryngeal Squamous Cell Carcinoma",
        "Stage I Laryngeal Verrucous Carcinoma",
        "Stage I Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage I Oral Cavity Verrucous Carcinoma",
        "Stage I Oropharyngeal Squamous Cell Carcinoma",
        "Stage II Hypopharyngeal Squamous Cell Carcinoma",
        "Stage II Laryngeal Squamous Cell Carcinoma",
        "Stage II Laryngeal Verrucous Carcinoma",
        "Stage II Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage II Oral Cavity Verrucous Carcinoma",
        "Stage II Oropharyngeal Squamous Cell Carcinoma",
        "Stage III Hypopharyngeal Squamous Cell Carcinoma",
        "Stage III Laryngeal Squamous Cell Carcinoma",
        "Stage III Laryngeal Verrucous Carcinoma",
        "Stage III Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage III Oral Cavity Verrucous Carcinoma",
        "Stage III Oropharyngeal Squamous Cell Carcinoma",
        "Stage IV Hypopharyngeal Squamous Cell Carcinoma",
        "Stage IVA Laryngeal Squamous Cell Carcinoma",
        "Stage IVA Laryngeal Verrucous Carcinoma",
        "Stage IVA Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage IVA Oral Cavity Verrucous Carcinoma",
        "Stage IVA Oropharyngeal Squamous Cell Carcinoma",
        "Tongue Carcinoma"
      ],
      "interventions": [
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Soy Isoflavones",
          "type": "DRUG"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "19 Years to 79 Years"
      },
      "enrollment_count": 55,
      "start_date": "2009-07",
      "completion_date": "2015-09",
      "has_results": true,
      "last_update_posted_date": "2016-10-24",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Ann Arbor, Michigan • Detroit, Michigan",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02007200"
    },
    {
      "nct_id": "NCT00244933",
      "title": "Gemcitabine Hydrochloride and Genistein in Treating Women With Stage IV Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "genistein",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "gemcitabine",
          "type": "DRUG"
        },
        {
          "name": "Tumor biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Barbara Ann Karmanos Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 120 Years · Female only"
      },
      "enrollment_count": 19,
      "start_date": "2004-02",
      "completion_date": "2009-10",
      "has_results": true,
      "last_update_posted_date": "2023-06-22",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00244933"
    },
    {
      "nct_id": "NCT00277446",
      "title": "Dietary Supplementation With Soy Isoflavones in Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Soy isoflavones",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 13,
      "start_date": "2006-01",
      "completion_date": "2007-04",
      "has_results": true,
      "last_update_posted_date": "2011-02-25",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00277446"
    },
    {
      "nct_id": "NCT07194590",
      "title": "Equol and Vascular Function in Women With Chronic Kidney Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Kidney Disease (Stage 3-4)",
        "Vascular Function",
        "Cognitive Functions",
        "Cerebrovascular Function",
        "Blood Pressure"
      ],
      "interventions": [
        {
          "name": "Equol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "50 Years and older · Female only"
      },
      "enrollment_count": 74,
      "start_date": "2026-02-19",
      "completion_date": "2030-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-02",
      "last_synced_at": "2026-09-03T18:02:03.562Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07194590"
    }
  ]
}