{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Echinacea+purpurea+product",
    "query": {
      "intervention": "Echinacea purpurea product"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T14:29:43.708Z",
  "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": "NCT00103012",
      "title": "Drug Interactions of Echinacea, Ginseng, and Ginkgo Biloba Taken With Lopinavir/Ritonavir in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Gingko Biloba",
          "type": "DRUG"
        },
        {
          "name": "Echinacea purpurea",
          "type": "DRUG"
        },
        {
          "name": "Panax ginseng",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institutes of Health Clinical Center (CC)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 47,
      "start_date": "2005-01",
      "completion_date": "2011-06",
      "has_results": true,
      "last_update_posted_date": "2012-04-16",
      "last_synced_at": "2026-10-06T14:29:43.708Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00103012"
    },
    {
      "nct_id": "NCT02003651",
      "title": "Echinacea and Acute Respiratory Illness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Acute Respiratory Infections"
      ],
      "interventions": [
        {
          "name": "Quick Defense",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Appalachian State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 55 Years · Female only"
      },
      "enrollment_count": 40,
      "start_date": "2013-11",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2016-12-13",
      "last_synced_at": "2026-10-06T14:29:43.708Z",
      "location_count": 1,
      "location_summary": "Kannapolis, North Carolina",
      "locations": [
        {
          "city": "Kannapolis",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02003651"
    },
    {
      "nct_id": "NCT01129128",
      "title": "Three Arm Trial of Immune Effects of Echinacea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Upper Respiratory Tract Infections"
      ],
      "interventions": [
        {
          "name": "Echinacea purpurea product",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 67,
      "start_date": "2010-05",
      "completion_date": "2011-03",
      "has_results": true,
      "last_update_posted_date": "2012-06-21",
      "last_synced_at": "2026-10-06T14:29:43.708Z",
      "location_count": 1,
      "location_summary": "Kenmore, Washington",
      "locations": [
        {
          "city": "Kenmore",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01129128"
    },
    {
      "nct_id": "NCT02313545",
      "title": "Phase I-B Study to Evaluate the Safety, Tolerability and Efficacy of IZN-6NVS for the Treatment of AV and DIV",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Atrophic Vaginitis"
      ],
      "interventions": [
        {
          "name": "IZN-6NVS Cream",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Izun Pharma Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 50,
      "start_date": "2014-12",
      "completion_date": "2017-03",
      "has_results": false,
      "last_update_posted_date": "2018-03-14",
      "last_synced_at": "2026-10-06T14:29:43.708Z",
      "location_count": 2,
      "location_summary": "The Bronx, New York • Seattle, Washington",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02313545"
    },
    {
      "nct_id": "NCT04103099",
      "title": "Impact of HLNatural Immune Supplement on Colds",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Immune System Diseases"
      ],
      "interventions": [
        {
          "name": "HLNatural Immune",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Hawthorne Effect Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2019-10-16",
      "completion_date": "2020-08-15",
      "has_results": false,
      "last_update_posted_date": "2021-11-15",
      "last_synced_at": "2026-10-06T14:29:43.708Z",
      "location_count": 1,
      "location_summary": "Lafayette, California",
      "locations": [
        {
          "city": "Lafayette",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04103099"
    }
  ]
}