{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dapsone+gel",
    "query": {
      "intervention": "Dapsone gel"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 24,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dapsone+gel&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T03:40:25.059Z",
  "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": "2026-09-05T03:40:25.059Z",
      "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": "2026-09-05T03:40:25.059Z",
      "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": "2026-09-05T03:40:25.059Z",
      "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": "NCT03681470",
      "title": "Aczone Gel 7.5% in the Treatment of Acne Vulgaris in Patients With Skin of Color",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "Aczone Gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Icahn School of Medicine at Mount Sinai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2019-04-09",
      "completion_date": "2021-05-06",
      "has_results": true,
      "last_update_posted_date": "2022-07-27",
      "last_synced_at": "2026-09-05T03:40:25.059Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03681470"
    },
    {
      "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": "2026-09-05T03:40:25.059Z",
      "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": "NCT01313728",
      "title": "A Study That Evaluates the Decrease in Irritation When Using Additional Acne Treatment Products",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "Dapsone plus Tretinoin Gel",
          "type": "DRUG"
        },
        {
          "name": "Tretinoin Gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bausch Health Americas, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 26,
      "start_date": "2010-12",
      "completion_date": "2011-01",
      "has_results": true,
      "last_update_posted_date": "2012-02-15",
      "last_synced_at": "2026-09-05T03:40:25.059Z",
      "location_count": 1,
      "location_summary": "Broomall, Pennsylvania",
      "locations": [
        {
          "city": "Broomall",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01313728"
    },
    {
      "nct_id": "NCT00964366",
      "title": "Study to Determine and Compare the Tolerance and Irritation Potential of Topical Acne Medications",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "clindamycin and benzoyl peroxide",
          "type": "DRUG"
        },
        {
          "name": "Dapsone gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stiefel, a GSK Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 53,
      "start_date": "2009-07",
      "completion_date": "2009-08",
      "has_results": true,
      "last_update_posted_date": "2017-05-30",
      "last_synced_at": "2026-09-05T03:40:25.059Z",
      "location_count": 1,
      "location_summary": "Broomall, Pennsylvania",
      "locations": [
        {
          "city": "Broomall",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00964366"
    },
    {
      "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": "2026-09-05T03:40:25.059Z",
      "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": "NCT02944461",
      "title": "Efficacy and Safety of Aczone 7.5% Gel in the Treatment of Truncal Acne Vulgaris",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acne"
      ],
      "interventions": [
        {
          "name": "Dapsone 7.5 % gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Derm Research, PLLC",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2016-10",
      "completion_date": "2017-09-11",
      "has_results": true,
      "last_update_posted_date": "2019-04-03",
      "last_synced_at": "2026-09-05T03:40:25.059Z",
      "location_count": 3,
      "location_summary": "Sacramento, California • Louisville, Kentucky • Las Vegas, Nevada",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02944461"
    },
    {
      "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": "2026-09-05T03:40:25.059Z",
      "location_count": 1,
      "location_summary": "Fair Lawn, New Jersey",
      "locations": [
        {
          "city": "Fair Lawn",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02117752"
    }
  ]
}