{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=4",
    "query": {
      "condition": "Smoking",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 2331,
    "total_pages": 234,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-19T19:12:24.650Z",
  "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": "NCT00123682",
      "title": "TeleQuit Smoking Cessation Program",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Proactive outreach to counseling",
          "type": "PROCEDURE"
        },
        {
          "name": "Reactive outreach to counseling",
          "type": "PROCEDURE"
        },
        {
          "name": "Intensive counseling",
          "type": "PROCEDURE"
        },
        {
          "name": "Self-help",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "US Department of Veterans Affairs",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 3120,
      "start_date": "2005-05",
      "completion_date": "2009-09",
      "has_results": true,
      "last_update_posted_date": "2015-03-17",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 3,
      "location_summary": "Palo Alto, California • Sepulveda, California • New York, New York",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Sepulveda",
          "state": "California"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00123682"
    },
    {
      "nct_id": "NCT00143286",
      "title": "A 52-Week Multicenter Study Evaluating the Safety and Efficacy of Varenicline for the Maintenance of Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "varenicline (CP-526,555)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 2000,
      "start_date": "2003-04",
      "completion_date": "2005-03",
      "has_results": false,
      "last_update_posted_date": "2007-06-04",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 6,
      "location_summary": "Santa Ana, California • West Palm Beach, Florida • Lexington, Kentucky + 3 more",
      "locations": [
        {
          "city": "Santa Ana",
          "state": "California"
        },
        {
          "city": "West Palm Beach",
          "state": "Florida"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Mogadore",
          "state": "Ohio"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00143286"
    },
    {
      "nct_id": "NCT00413205",
      "title": "TESRA: (Treatment of Emphysema With a Gamma-Selective Retinoid Agonist)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Emphysema"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "RAR Gamma",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "44 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "44 Years and older"
      },
      "enrollment_count": 491,
      "start_date": "2007-01",
      "completion_date": "2010-05",
      "has_results": false,
      "last_update_posted_date": "2016-11-02",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 12,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • San Diego, California + 9 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00413205"
    },
    {
      "nct_id": "NCT00793468",
      "title": "Relapse Prevention Study in Newly Abstinent Smokers",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Substance Dependence"
      ],
      "interventions": [
        {
          "name": "GSK598809",
          "type": "DRUG"
        },
        {
          "name": "Nicotine Replacement Transdermal Patch",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 0,
      "start_date": "2008-12",
      "completion_date": "2008-12",
      "has_results": false,
      "last_update_posted_date": "2016-02-15",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 10,
      "location_summary": "DeLand, Florida • Pembroke Pines, Florida • Stockbridge, Georgia + 7 more",
      "locations": [
        {
          "city": "DeLand",
          "state": "Florida"
        },
        {
          "city": "Pembroke Pines",
          "state": "Florida"
        },
        {
          "city": "Stockbridge",
          "state": "Georgia"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00793468"
    },
    {
      "nct_id": "NCT02703597",
      "title": "Smoking Prevention Through Social Connections Among Adolescents - ASPIRE",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Behavior"
      ],
      "interventions": [
        {
          "name": "Surveys",
          "type": "BEHAVIORAL"
        },
        {
          "name": "ASPIRE",
          "type": "BEHAVIORAL"
        },
        {
          "name": "GSA-ASPIRE-Network",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "11 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "11 Years to 18 Years"
      },
      "enrollment_count": 393,
      "start_date": "2021-06-01",
      "completion_date": "2022-03-16",
      "has_results": true,
      "last_update_posted_date": "2024-10-23",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02703597"
    },
    {
      "nct_id": "NCT01995097",
      "title": "BABY STEPS II: SMS Scheduled Gradual Reduction Text Messages to Help Pregnant Smokers Quit",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking",
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "Scheduled Gradual Reduction Text Messages",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Support Text Messages",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Duke University",
      "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": 331,
      "start_date": "2014-03",
      "completion_date": "2018-02-20",
      "has_results": false,
      "last_update_posted_date": "2019-02-08",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01995097"
    },
    {
      "nct_id": "NCT05294497",
      "title": "CSD201301: Study to Assess Elements of Abuse Liability for Four P13 Nicotine Pouches",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking",
        "Tobacco Use",
        "Tobacco Smoking"
      ],
      "interventions": [
        {
          "name": "Product A",
          "type": "OTHER"
        },
        {
          "name": "Product B",
          "type": "OTHER"
        },
        {
          "name": "Product C",
          "type": "OTHER"
        },
        {
          "name": "Product D",
          "type": "OTHER"
        },
        {
          "name": "Product N",
          "type": "OTHER"
        },
        {
          "name": "Product E",
          "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": 42,
      "start_date": "2022-05-01",
      "completion_date": "2022-05-27",
      "has_results": false,
      "last_update_posted_date": "2022-06-29",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 2,
      "location_summary": "Lexington, Kentucky • Knoxville, Tennessee",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Knoxville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05294497"
    },
    {
      "nct_id": "NCT02183818",
      "title": "Integrative-omics of the Disordered COPD Small Airway Epithelium",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Smoking",
        "COPD"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 42,
      "start_date": "2015-04-06",
      "completion_date": "2020-10-15",
      "has_results": false,
      "last_update_posted_date": "2021-05-28",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02183818"
    },
    {
      "nct_id": "NCT05273450",
      "title": "An Intervention to Promote Use of Smoking Cessation Resources Among Adults Using Community Food Pantries",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation",
        "Food Insecurity"
      ],
      "interventions": [
        {
          "name": "Quitline Information with Reinforcement",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Case Western Reserve University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2022-02-14",
      "completion_date": "2022-08-22",
      "has_results": false,
      "last_update_posted_date": "2024-03-12",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05273450"
    },
    {
      "nct_id": "NCT06129123",
      "title": "An Online Intervention to Reduce E-cigarette Use and Susceptibility to Smoking in Young Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "E-cigarette Use"
      ],
      "interventions": [
        {
          "name": "Live Free From E-cigarettes",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "24 Years",
        "sex": "ALL",
        "summary": "18 Years to 24 Years"
      },
      "enrollment_count": 105,
      "start_date": "2025-07-01",
      "completion_date": "2026-01-23",
      "has_results": false,
      "last_update_posted_date": "2026-06-01",
      "last_synced_at": "2026-10-19T19:12:24.650Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06129123"
    }
  ]
}