{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dapsone+Gel+Vehicle",
    "query": {
      "intervention": "Dapsone Gel Vehicle"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T18:26:48.296Z",
  "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": "NCT02865005",
      "title": "Trial of Dapsone 5.0% Gel in the Treatment of Acne Vulgaris",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "Dapsone 5.0% Gel (SEEGPharm)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Dapsone 5.0% Gel (Allergan)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Seegpharm S.A.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "12 Years to 40 Years"
      },
      "enrollment_count": 2361,
      "start_date": "2016-02",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2016-12-20",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 35,
      "location_summary": "Encino, California • Fullerton, California • La Mesa, California + 29 more",
      "locations": [
        {
          "city": "Encino",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02865005"
    },
    {
      "nct_id": "NCT00249782",
      "title": "A Phase II, Randomized Study of ACZONE™ (Dapsone) Gel, 5% for Papulopustular Rosacea.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Rosacea"
      ],
      "interventions": [
        {
          "name": "Vehicle control, 2x/day",
          "type": "DRUG"
        },
        {
          "name": "ACZONE (dapsone) Gel, 5%, 2x/day",
          "type": "DRUG"
        },
        {
          "name": "ACZONE (dapsone) Gel, 5%, 1x/day",
          "type": "DRUG"
        },
        {
          "name": "MetroGel® (metronidazole gel), 1.0% 1x/day",
          "type": "DRUG"
        },
        {
          "name": "ACZONE (dapsone) Gel, 5%, 1x/day (AM) + MetroGel (metronidazole gel), 1.0%, 1x/day (PM)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Allergan",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 400,
      "start_date": "2005-11",
      "completion_date": "2006-05",
      "has_results": false,
      "last_update_posted_date": "2011-05-30",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 26,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • Fremont, California + 21 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fremont",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00249782"
    },
    {
      "nct_id": "NCT02117739",
      "title": "Photoallergy Potential of Dapsone Gel in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "dapsone gel",
          "type": "DRUG"
        },
        {
          "name": "dapsone gel vehicle",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Almirall, S.A.",
      "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": 58,
      "start_date": "2014-04",
      "completion_date": "2014-07",
      "has_results": false,
      "last_update_posted_date": "2018-10-09",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 1,
      "location_summary": "Fair Lawn, New Jersey",
      "locations": [
        {
          "city": "Fair Lawn",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02117739"
    },
    {
      "nct_id": "NCT02108483",
      "title": "Phototoxicity Test of Dapsone Gel in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "dapsone gel",
          "type": "DRUG"
        },
        {
          "name": "dapsone gel vehicle",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Almirall, S.A.",
      "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": 33,
      "start_date": "2014-04",
      "completion_date": "2014-05",
      "has_results": false,
      "last_update_posted_date": "2018-10-09",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 1,
      "location_summary": "Fair Lawn, New Jersey",
      "locations": [
        {
          "city": "Fair Lawn",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02108483"
    },
    {
      "nct_id": "NCT01974323",
      "title": "Safety and Efficacy Study of Dapsone Gel in Patients With Acne Vulgaris",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "Dapsone Gel",
          "type": "DRUG"
        },
        {
          "name": "Dapsone Gel Vehicle",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Almirall, S.A.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 2238,
      "start_date": "2013-11",
      "completion_date": "2014-10",
      "has_results": true,
      "last_update_posted_date": "2018-10-09",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 2,
      "location_summary": "Beverly Hills, California • Aventura, Florida",
      "locations": [
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Aventura",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01974323"
    },
    {
      "nct_id": "NCT02117752",
      "title": "Dermal Tolerability of Dapsone Gel in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "dapsone gel",
          "type": "DRUG"
        },
        {
          "name": "dapsone gel vehicle",
          "type": "DRUG"
        },
        {
          "name": "sodium lauryl sulfate",
          "type": "DRUG"
        },
        {
          "name": "Normal saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Almirall, S.A.",
      "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": 237,
      "start_date": "2014-04",
      "completion_date": "2014-07",
      "has_results": false,
      "last_update_posted_date": "2018-10-09",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 1,
      "location_summary": "Fair Lawn, New Jersey",
      "locations": [
        {
          "city": "Fair Lawn",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02117752"
    },
    {
      "nct_id": "NCT01870050",
      "title": "Dapsone Prurigo Study",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lichen Simples Chronicus and Prurigo"
      ],
      "interventions": [
        {
          "name": "Dapsone gel - verum",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cook County Health",
      "sponsor_class": "OTHER_GOV",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2013-09",
      "completion_date": "2019-11",
      "has_results": false,
      "last_update_posted_date": "2013-06-05",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01870050"
    },
    {
      "nct_id": "NCT01974141",
      "title": "A Safety and Efficacy Study of Dapsone Gel in Patients With Acne Vulgaris",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "Dapsone Gel",
          "type": "DRUG"
        },
        {
          "name": "Dapsone Gel Vehicle",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Almirall, S.A.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 2102,
      "start_date": "2013-11",
      "completion_date": "2014-10",
      "has_results": true,
      "last_update_posted_date": "2018-10-09",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 1,
      "location_summary": "Encino, California",
      "locations": [
        {
          "city": "Encino",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01974141"
    },
    {
      "nct_id": "NCT00343187",
      "title": "A Phase II Study of ACZONE™ (Dapsone) Gel, 5% As a Treatment For Tarceva® (Erlotinib)Related Rash",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Rash",
        "Non-small-Cell Lung Cancer"
      ],
      "interventions": [
        {
          "name": "ACZONE (dapsone) Gel, 5%",
          "type": "DRUG"
        },
        {
          "name": "Vehicle Control",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Allergan",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2006-06",
      "completion_date": "2007-07",
      "has_results": false,
      "last_update_posted_date": "2011-05-30",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 3,
      "location_summary": "Chicago, Illinois • Hershey, Pennsylvania • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00343187"
    },
    {
      "nct_id": "NCT00243542",
      "title": "Phase IV Study to Gather More Information About the Safety of ACZONE Gel, 5% in Treating Subjects With Acne Who Have G6PD Deficiency",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "ACZONE Gel, 5%",
          "type": "DRUG"
        },
        {
          "name": "Vehicle",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Allergan",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 64,
      "start_date": "2005-11",
      "completion_date": "2006-10",
      "has_results": false,
      "last_update_posted_date": "2011-05-30",
      "last_synced_at": "2026-09-04T18:26:48.296Z",
      "location_count": 29,
      "location_summary": "Birmingham, Alabama • San Diego, California • San Francisco, California + 24 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00243542"
    }
  ]
}