{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Capsaicin+control&page=2",
    "query": {
      "intervention": "Capsaicin control",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Capsaicin+control&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-20T15:24:47.768Z",
  "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": "NCT00004316",
      "title": "Phase I/II Randomized, Placebo-Controlled Study of Capsaicin for Interstitial Cystitis and Vulvar Vestibulitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Interstitial Cystitis",
        "Vulvar Diseases"
      ],
      "interventions": [
        {
          "name": "capsaicin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 139,
      "start_date": "1995-06",
      "completion_date": "2007-08",
      "has_results": false,
      "last_update_posted_date": "2025-05-04",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004316"
    },
    {
      "nct_id": "NCT05298202",
      "title": "The Influence of Capsaicin Gel During Exercise Within the Heat",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acute Exercise",
        "Heat Exposure"
      ],
      "interventions": [
        {
          "name": "Capsaicin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Control Gel",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Exercise",
          "type": "OTHER"
        },
        {
          "name": "Hot environment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "19 Years to 45 Years"
      },
      "enrollment_count": 12,
      "start_date": "2022-05-25",
      "completion_date": "2022-10-01",
      "has_results": true,
      "last_update_posted_date": "2024-03-15",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05298202"
    },
    {
      "nct_id": "NCT00064623",
      "title": "Study of NGX-4010 for the Treatment of Painful HIV-Associated Neuropathy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV Infections",
        "Peripheral Nervous System Diseases",
        "Pain"
      ],
      "interventions": [
        {
          "name": "Capsaicin Dermal Patch",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "NeurogesX",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2003-08",
      "completion_date": "2005-11",
      "has_results": false,
      "last_update_posted_date": "2008-03-06",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 35,
      "location_summary": "Phoenix, Arizona • Berkeley, California • San Diego, California + 29 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Berkeley",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00064623"
    },
    {
      "nct_id": "NCT01533428",
      "title": "A Study to Evaluate Efficacy and Safety of a Single Application of Capsaicin 8%Transdermal Delivery System Compared to Placebo in Reducing Pain Intensity in Subjects With Painful Diabetic Peripheral Neuropathy (PDPN)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Diabetic Peripheral Neuropathy",
        "Pain"
      ],
      "interventions": [
        {
          "name": "Capsaicin 8%",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Astellas Pharma Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 369,
      "start_date": "2012-02",
      "completion_date": "2014-02",
      "has_results": true,
      "last_update_posted_date": "2015-11-04",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 29,
      "location_summary": "Anniston, Alabama • Fresno, California • Long Beach, California + 24 more",
      "locations": [
        {
          "city": "Anniston",
          "state": "Alabama"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01533428"
    },
    {
      "nct_id": "NCT01231750",
      "title": "Efficacy of Topical Capsaicin Cream for Stable Angina",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Stable Angina"
      ],
      "interventions": [
        {
          "name": "Capsaicin",
          "type": "DRUG"
        },
        {
          "name": "Placebo cream",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Neal Weintraub",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 7,
      "start_date": "2010-10",
      "completion_date": "2012-03",
      "has_results": true,
      "last_update_posted_date": "2015-06-25",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01231750"
    },
    {
      "nct_id": "NCT03429049",
      "title": "A Phase 3 Efficacy and Safety Study of Intra-articular CNTX-4975-05 (Capsaicin) vs Placebo in Subjects With OA Knee Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "CNTX-4975-05",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Centrexion Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "95 Years",
        "sex": "ALL",
        "summary": "40 Years to 95 Years"
      },
      "enrollment_count": 332,
      "start_date": "2018-01-24",
      "completion_date": "2019-11-22",
      "has_results": true,
      "last_update_posted_date": "2022-07-26",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 33,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Tucson, Arizona + 28 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03429049"
    },
    {
      "nct_id": "NCT00795106",
      "title": "Trial to Evaluate the Efficacy of Topical Capsaicin to Reduce Pain and Improve Health-related Quality of Life in Adults With Chronic Myofascial Neck Pain",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Myofascial Pain Syndrome"
      ],
      "interventions": [
        {
          "name": "Capsaicin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stamford Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2009-11",
      "completion_date": "2010-11",
      "has_results": false,
      "last_update_posted_date": "2016-12-06",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 1,
      "location_summary": "Stamford, Connecticut",
      "locations": [
        {
          "city": "Stamford",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00795106"
    },
    {
      "nct_id": "NCT00085761",
      "title": "Study of NGX-4010 for Treatment of Painful HIV-Associated Neuropathy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV Infections",
        "Peripheral Nervous System Diseases",
        "Pain"
      ],
      "interventions": [
        {
          "name": "Capsaicin Dermal Patch",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "NeurogesX",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": null,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2008-03-06",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 2,
      "location_summary": "Sarasota, Florida • Annandale, Virginia",
      "locations": [
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "Annandale",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00085761"
    },
    {
      "nct_id": "NCT03528369",
      "title": "A Phase 2 Clinical Trial Examining the Effects on Osteoarthritic Knee Pain of CGS-200-1, CGS-200-5 and Vehicle Control",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis, Knee",
        "Pain"
      ],
      "interventions": [
        {
          "name": "CGS-200-1",
          "type": "DRUG"
        },
        {
          "name": "CGS-200-5",
          "type": "DRUG"
        },
        {
          "name": "CGS-200 Vehicle",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Propella Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "35 Years to 75 Years"
      },
      "enrollment_count": 122,
      "start_date": "2018-05-14",
      "completion_date": "2018-12-30",
      "has_results": true,
      "last_update_posted_date": "2024-10-30",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 6,
      "location_summary": "Clearwater, Florida • Tampa, Florida • Cincinnati, Ohio + 2 more",
      "locations": [
        {
          "city": "Clearwater",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03528369"
    },
    {
      "nct_id": "NCT00677378",
      "title": "Transient Receptor Potential Vanilloid One (TRPV1) Receptor Expression in Children With Retrosternal Pain",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Epigastric Pain",
        "Retrosternal Pain",
        "Esophagitis",
        "Gastrointestinal Symptoms"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Medical College of Wisconsin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "5 Years to 17 Years"
      },
      "enrollment_count": 77,
      "start_date": "2006-12",
      "completion_date": "2015-10",
      "has_results": false,
      "last_update_posted_date": "2015-10-22",
      "last_synced_at": "2026-09-20T15:24:47.768Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00677378"
    }
  ]
}