{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking+Cigarette&page=21",
    "query": {
      "condition": "Smoking Cigarette",
      "page": 21
    },
    "page_size": 10
  },
  "pagination": {
    "page": 21,
    "page_size": 10,
    "total_count": 798,
    "total_pages": 80,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking+Cigarette&page=22&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking+Cigarette&page=20&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-15T18:43:18.545Z",
  "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": "NCT02870218",
      "title": "Abuse Liability of Reduced Nicotine Content Cigarettes in the Context of Concurrent E-Cigarette Use",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Nicotine Addiction",
        "Cigarette Smoking"
      ],
      "interventions": [
        {
          "name": "Smoking research cigarettes with e-cigarette",
          "type": "DRUG"
        },
        {
          "name": "Nicotine discrimination thresholds",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rose Research Center, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 150,
      "start_date": "2019-05-01",
      "completion_date": "2021-07-28",
      "has_results": false,
      "last_update_posted_date": "2022-01-14",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 2,
      "location_summary": "Charlotte, North Carolina • Raleigh, North Carolina",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Raleigh",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02870218"
    },
    {
      "nct_id": "NCT03710590",
      "title": "Effects of Electronic Cigarette Settings and Liquid Concentrations in Cigarette Smokers and Electronic Cigarette Users",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Electronic Cigarettes"
      ],
      "interventions": [
        {
          "name": "ECIG Lab Session 15 watts, 10 mg nicotine",
          "type": "OTHER"
        },
        {
          "name": "ECIG Lab Session 15 watts, 15 mg nicotine",
          "type": "OTHER"
        },
        {
          "name": "ECIG Lab Session 15 watts, 30 mg nicotine",
          "type": "OTHER"
        },
        {
          "name": "ECIG Lab Session 30 watts, 10 mg nicotine",
          "type": "OTHER"
        },
        {
          "name": "ECIG Lab Session 30 watts, 15 mg nicotine",
          "type": "OTHER"
        },
        {
          "name": "ECIG Lab Session 30 watts, 30 mg nicotine",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 45,
      "start_date": "2019-01-15",
      "completion_date": "2020-03-09",
      "has_results": true,
      "last_update_posted_date": "2022-10-06",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03710590"
    },
    {
      "nct_id": "NCT03576768",
      "title": "QuitFast: Evaluating Transcranial Magnetic Stimulation as a Tool to Reduce Smoking Directly Following a Quit Attempt",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking, Cigarette",
        "Craving",
        "Addiction",
        "Nicotine"
      ],
      "interventions": [
        {
          "name": "Real cTBS",
          "type": "DEVICE"
        },
        {
          "name": "Sham cTBS",
          "type": "DEVICE"
        },
        {
          "name": "Real iTBS",
          "type": "DEVICE"
        },
        {
          "name": "Sham iTBS",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 25,
      "start_date": "2018-09-04",
      "completion_date": "2019-10-25",
      "has_results": true,
      "last_update_posted_date": "2021-03-24",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03576768"
    },
    {
      "nct_id": "NCT02796391",
      "title": "Facilitating Smoking Cessation With Reduced Nicotine Cigarettes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Very Low Nicotine Content (VLNC) Cigarettes",
          "type": "DRUG"
        },
        {
          "name": "One on One Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 163,
      "start_date": "2017-09-07",
      "completion_date": "2021-08-24",
      "has_results": true,
      "last_update_posted_date": "2022-11-14",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02796391"
    },
    {
      "nct_id": "NCT06001840",
      "title": "Promotion and Mitigation Factors Leading to Illegal Tobacco Purchases",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigarette Smoking",
        "Nicotine Vaping"
      ],
      "interventions": [
        {
          "name": "Promotion factors",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Mitigation strategies",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Virginia Polytechnic Institute and State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 65,
      "start_date": "2024-01-04",
      "completion_date": "2025-03-31",
      "has_results": true,
      "last_update_posted_date": "2026-02-10",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06001840"
    },
    {
      "nct_id": "NCT00656500",
      "title": "Quitline Use in Surgical Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Dependence"
      ],
      "interventions": [
        {
          "name": "Standard brief advice",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Quitline intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2007-07",
      "completion_date": "2011-06",
      "has_results": false,
      "last_update_posted_date": "2012-02-03",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00656500"
    },
    {
      "nct_id": "NCT04514471",
      "title": "Feasibility of Conducting a Pilot Telehealth Study Assessing the Removal of Filter Ventilation on Smoking Behavior and Biomarkers in Menthol Smokers Switched to Non-menthol Cigarettes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Minimally Ventilated non-menthol cigarettes",
          "type": "OTHER"
        },
        {
          "name": "Ventilated non-menthol cigarettes",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Masonic Cancer Center, University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2024-03-18",
      "completion_date": "2025-06-30",
      "has_results": true,
      "last_update_posted_date": "2026-09-09",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04514471"
    },
    {
      "nct_id": "NCT04620616",
      "title": "Nicotine Uptake, Measures of Abuse Liability, and Puffing Topography With Use of RELX ENDS Products by ENDS Consumers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Electronic Cigarette Use"
      ],
      "interventions": [
        {
          "name": "RELX ENDS Tobacco Flavor",
          "type": "OTHER"
        },
        {
          "name": "RELX ENDS Menthol Flavor",
          "type": "OTHER"
        },
        {
          "name": "Subject Usual Brand ENDS",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Cheerain HK Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "59 Years",
        "sex": "ALL",
        "summary": "22 Years to 59 Years"
      },
      "enrollment_count": 29,
      "start_date": "2020-09-11",
      "completion_date": "2021-01-14",
      "has_results": false,
      "last_update_posted_date": "2021-01-19",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 2,
      "location_summary": "Cypress, California • Overland Park, Kansas",
      "locations": [
        {
          "city": "Cypress",
          "state": "California"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04620616"
    },
    {
      "nct_id": "NCT02210832",
      "title": "Financial Incentives for Smoking Cessation Among Disadvantaged Pregnant Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigarette Smoking"
      ],
      "interventions": [
        {
          "name": "Best practices",
          "type": "BEHAVIORAL"
        },
        {
          "name": "financial incentives",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 257,
      "start_date": "2014-01-31",
      "completion_date": "2020-01-31",
      "has_results": true,
      "last_update_posted_date": "2023-08-24",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 1,
      "location_summary": "Burlington, Vermont",
      "locations": [
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02210832"
    },
    {
      "nct_id": "NCT07067151",
      "title": "Using Smartwatches to Monitor Smoking in Real-life Situations",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Smoking"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute on Minority Health and Health Disparities (NIMHD)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "21 Years to 120 Years"
      },
      "enrollment_count": 30,
      "start_date": "2026-11-18",
      "completion_date": "2028-03-20",
      "has_results": false,
      "last_update_posted_date": "2026-11-13",
      "last_synced_at": "2026-11-15T18:43:18.545Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07067151"
    }
  ]
}