{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Quercetin+500+MG",
    "query": {
      "intervention": "Quercetin 500 MG"
    },
    "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": "2026-09-21T07:13:01.715Z",
  "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": "NCT05371340",
      "title": "Quercetin's Effect on Bone Health and Inflammatory Markers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoporosis, Postmenopausal"
      ],
      "interventions": [
        {
          "name": "Quercetin (500 mg)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo (500 mg)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Kennesaw State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "75 Years",
        "sex": "FEMALE",
        "summary": "45 Years to 75 Years · Female only"
      },
      "enrollment_count": 33,
      "start_date": "2019-08-27",
      "completion_date": "2020-04-27",
      "has_results": false,
      "last_update_posted_date": "2022-05-12",
      "last_synced_at": "2026-09-21T07:13:01.715Z",
      "location_count": 1,
      "location_summary": "Kennesaw, Georgia",
      "locations": [
        {
          "city": "Kennesaw",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05371340"
    },
    {
      "nct_id": "NCT02998918",
      "title": "Effects of Short-term Curcumin and Multi-polyphenol Supplementation on the Anti-inflammatory Properties of HDL",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Inflammation",
        "Atherosclerosis",
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "PolyResveratrol Supplementation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Curcumin Supplementation",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 21,
      "start_date": "2016-09",
      "completion_date": "2020-06",
      "has_results": true,
      "last_update_posted_date": "2023-11-18",
      "last_synced_at": "2026-09-21T07:13:01.715Z",
      "location_count": 1,
      "location_summary": "Columbia, South Carolina",
      "locations": [
        {
          "city": "Columbia",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02998918"
    },
    {
      "nct_id": "NCT06003270",
      "title": "Biological Effects of Quercetin in COPD Phase II",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Obstructive Pulmonary Disease",
        "Emphysema",
        "Chronic Bronchitis With Airway Obstruction"
      ],
      "interventions": [
        {
          "name": "Quercetin 1000 mg",
          "type": "DRUG"
        },
        {
          "name": "Quercetin 500 MG",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Temple University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 30,
      "start_date": "2023-11-01",
      "completion_date": "2025-07-31",
      "has_results": false,
      "last_update_posted_date": "2024-04-08",
      "last_synced_at": "2026-09-21T07:13:01.715Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06003270"
    },
    {
      "nct_id": "NCT04733534",
      "title": "An Open-Label Intervention Trial to Reduce Senescence and Improve Frailty in Adult Survivors of Childhood Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Frailty",
        "Childhood Cancer"
      ],
      "interventions": [
        {
          "name": "Dasatinib plus Quercetin",
          "type": "DRUG"
        },
        {
          "name": "Fisetin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 110,
      "start_date": "2022-06-06",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-04-24",
      "last_synced_at": "2026-09-21T07:13:01.715Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04733534"
    },
    {
      "nct_id": "NCT07760506",
      "title": "The Effects of Quercefit® and Ubiqsome™ in Mitigating Inflammation and Promoting Metabolic Health",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy Aging",
        "Inflammaging",
        "Metabolic Health",
        "Quercetin",
        "Coenzyme Q10"
      ],
      "interventions": [
        {
          "name": "Quercetin (dietary supplement)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Coenzyme Q10",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Rice Flour",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Applied Science & Performance Institute",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "50 Years to 75 Years"
      },
      "enrollment_count": 60,
      "start_date": "2026-09-18",
      "completion_date": "2028-08",
      "has_results": false,
      "last_update_posted_date": "2026-09-17",
      "last_synced_at": "2026-09-21T07:13:01.715Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07760506"
    },
    {
      "nct_id": "NCT01708278",
      "title": "Beneficial Effects of Quercetin in Chronic Obstructive Pulmonary Disease (COPD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Obstructive Pulmonary Disease"
      ],
      "interventions": [
        {
          "name": "Quercetin",
          "type": "DRUG"
        },
        {
          "name": "Placebo - sugar chew",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 9,
      "start_date": "2014-02",
      "completion_date": "2015-10",
      "has_results": true,
      "last_update_posted_date": "2016-12-26",
      "last_synced_at": "2026-09-21T07:13:01.715Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01708278"
    },
    {
      "nct_id": "NCT00913081",
      "title": "Advancing Niacin by Inhibiting Flushing (ANTI-FLUSH)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Flushing"
      ],
      "interventions": [
        {
          "name": "Quercetin",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "21 Years to 75 Years"
      },
      "enrollment_count": 17,
      "start_date": "2009-02",
      "completion_date": "2009-12",
      "has_results": true,
      "last_update_posted_date": "2015-03-05",
      "last_synced_at": "2026-09-21T07:13:01.715Z",
      "location_count": 2,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00913081"
    }
  ]
}