{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=20",
    "query": {
      "condition": "Smoking",
      "page": 20
    },
    "page_size": 10
  },
  "pagination": {
    "page": 20,
    "page_size": 10,
    "total_count": 2331,
    "total_pages": 234,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=21&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=19&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T18:21:36.075Z",
  "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": "NCT00330187",
      "title": "Combined Pharmaco/Behavior Therapy in Adolescent Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Nicotine Dependence",
        "Nicotine Use Disorder"
      ],
      "interventions": [
        {
          "name": "Bupropion SR",
          "type": "DRUG"
        },
        {
          "name": "Contingency Management",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "12 Years to 21 Years"
      },
      "enrollment_count": 134,
      "start_date": "2004-03",
      "completion_date": "2009-07",
      "has_results": true,
      "last_update_posted_date": "2018-10-02",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00330187"
    },
    {
      "nct_id": "NCT00595868",
      "title": "Efficacy of Varenicline in Ambivalent Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Tobacco Use Disorder",
        "Tobacco Use Cessation",
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Vermont Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 220,
      "start_date": "2008-03",
      "completion_date": "2010-01",
      "has_results": true,
      "last_update_posted_date": "2011-12-02",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 2,
      "location_summary": "Omaha, Nebraska • Burlington, Vermont",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00595868"
    },
    {
      "nct_id": "NCT01250977",
      "title": "Effect of Donepezil on Smoking",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Donepezil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 30,
      "start_date": "2011-01-11",
      "completion_date": "2011-12-06",
      "has_results": true,
      "last_update_posted_date": "2019-07-11",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01250977"
    },
    {
      "nct_id": "NCT01692730",
      "title": "Web Assisted Tobacco Intervention With Community Colleges",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Dependence"
      ],
      "interventions": [
        {
          "name": "Enhanced Web Assisted Tobacco Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Basic Web Assisted Tobacco Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1452,
      "start_date": "2012-10",
      "completion_date": "2016-08",
      "has_results": true,
      "last_update_posted_date": "2017-11-20",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01692730"
    },
    {
      "nct_id": "NCT03063047",
      "title": "CSD1603: A Crossover Study to Evaluate the Exposure to \"Tar\" and Nicotine From 100s Menthol Cigarette Products",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "PD21871AA",
          "type": "OTHER"
        },
        {
          "name": "PD21872AA",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "RAI Services Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 29,
      "start_date": "2017-02-06",
      "completion_date": "2017-03-13",
      "has_results": false,
      "last_update_posted_date": "2017-03-14",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 1,
      "location_summary": "Lakewood, Colorado",
      "locations": [
        {
          "city": "Lakewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03063047"
    },
    {
      "nct_id": "NCT01736085",
      "title": "Providing Free Nicotine Patches to Quitline Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Telephone counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Voucher",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Nicotine patches",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3706,
      "start_date": "2013-04",
      "completion_date": "2014-11",
      "has_results": true,
      "last_update_posted_date": "2020-02-19",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01736085"
    },
    {
      "nct_id": "NCT03302026",
      "title": "Real Time fMRI and Quitting Smoking",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nicotine Use Disorder"
      ],
      "interventions": [
        {
          "name": "Realtime biofeedback using fMRI",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 46,
      "start_date": "2018-01-02",
      "completion_date": "2019-03-28",
      "has_results": false,
      "last_update_posted_date": "2019-04-16",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03302026"
    },
    {
      "nct_id": "NCT03233997",
      "title": "CSD170302: Study to Assess Nicotine Uptake in Smokers From Electronic Cigarettes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "FT21018",
          "type": "OTHER"
        },
        {
          "name": "FT21033",
          "type": "OTHER"
        },
        {
          "name": "FT21034",
          "type": "OTHER"
        },
        {
          "name": "FT21035",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "RAI Services Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "21 Years to 60 Years"
      },
      "enrollment_count": 121,
      "start_date": "2017-07-18",
      "completion_date": "2017-09-30",
      "has_results": false,
      "last_update_posted_date": "2017-10-20",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 1,
      "location_summary": "Lakewood, Colorado",
      "locations": [
        {
          "city": "Lakewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03233997"
    },
    {
      "nct_id": "NCT05075213",
      "title": "QuitBet Phase II: A Digital Social Game That Pays You to Stop Smoking",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "contingency management (deposit contract)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "leaderboard and social feed",
          "type": "BEHAVIORAL"
        },
        {
          "name": "smoking cessation resource list",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "WayBetter, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 245,
      "start_date": "2021-11-01",
      "completion_date": "2024-07-27",
      "has_results": true,
      "last_update_posted_date": "2026-02-27",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 1,
      "location_summary": "Wilmington, Delaware",
      "locations": [
        {
          "city": "Wilmington",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05075213"
    },
    {
      "nct_id": "NCT00828113",
      "title": "Long-term Varenicline Treatment for Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "varenicline",
          "type": "DRUG"
        },
        {
          "name": "Individual smoking cessation counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 101,
      "start_date": "2009-01",
      "completion_date": "2011-02",
      "has_results": true,
      "last_update_posted_date": "2015-11-20",
      "last_synced_at": "2026-10-20T18:21:36.075Z",
      "location_count": 2,
      "location_summary": "Madison, Wisconsin • Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        },
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00828113"
    }
  ]
}