{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=3",
    "query": {
      "condition": "Smoking",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 2331,
    "total_pages": 234,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Smoking&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-19T23:40:02.984Z",
  "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": "NCT00774605",
      "title": "A Study Evaluating The Absorption Of Varenicline Into The Body From A Varenicline Solution And A Varenicline Patch Applied To The Skin",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Varenicline free base solution",
          "type": "DRUG"
        },
        {
          "name": "Varenicline free base patch",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 12,
      "start_date": "2008-12",
      "completion_date": "2008-12",
      "has_results": false,
      "last_update_posted_date": "2009-01-26",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00774605"
    },
    {
      "nct_id": "NCT05994703",
      "title": "Assisting Smokers to Switch to an e-Cigarette by Accelerating Learning of Adaptive Habits Using D-cycloserine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smoking Cessation",
        "Harm Reduction"
      ],
      "interventions": [
        {
          "name": "d-cycloserine",
          "type": "DRUG"
        },
        {
          "name": "Juul e-cigarette",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Rose Research Center, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "22 Years to 65 Years"
      },
      "enrollment_count": 25,
      "start_date": "2023-10-20",
      "completion_date": "2026-01-12",
      "has_results": false,
      "last_update_posted_date": "2026-01-20",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "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/NCT05994703"
    },
    {
      "nct_id": "NCT03856515",
      "title": "Gender Differences in Switching From Smoking Regular Cigarettes to E-Cigarettes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigarette Smoking-Related Carcinoma"
      ],
      "interventions": [
        {
          "name": "Nicotine Replacement",
          "type": "DRUG"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Electronic Cigarette",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 169,
      "start_date": "2022-06-02",
      "completion_date": "2026-01-07",
      "has_results": true,
      "last_update_posted_date": "2026-01-28",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03856515"
    },
    {
      "nct_id": "NCT04803682",
      "title": "A Smoking Prevention Program (ASPIRE) and Mentoring for Preventing Smoking Among High School Youths",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Healthy Subject"
      ],
      "interventions": [
        {
          "name": "Preventive Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Questionnaire Administration",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "13 Years to 18 Years"
      },
      "enrollment_count": 94,
      "start_date": "2016-01-08",
      "completion_date": "2021-03-16",
      "has_results": false,
      "last_update_posted_date": "2021-03-18",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04803682"
    },
    {
      "nct_id": "NCT05271578",
      "title": "MRI and Biological Markers of Acute E-Cigarette Exposure in Smokers and Vapers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vascular Reactivity",
        "Serum Biomarkers"
      ],
      "interventions": [
        {
          "name": "Standardized Electronic Research Cigarette",
          "type": "DEVICE"
        },
        {
          "name": "Nicotine Research Cigarette",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 55,
      "start_date": "2022-06-07",
      "completion_date": "2025-11-28",
      "has_results": false,
      "last_update_posted_date": "2025-12-16",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05271578"
    },
    {
      "nct_id": "NCT03565497",
      "title": "Engaging Working Memory and Distress Tolerance to Aid Smoking Cessation",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Wellness Education Control Condition",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Mindfulness Training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Mindfulness Training Plus IE",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Boston University Charles River Campus",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 30,
      "start_date": "2019-04-19",
      "completion_date": "2021-08-31",
      "has_results": true,
      "last_update_posted_date": "2023-05-17",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03565497"
    },
    {
      "nct_id": "NCT02157610",
      "title": "Smoking Cessation for Cervical Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cervical Cancer",
        "Tobacco Use",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Self-Help Materials",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Nicotine Patch",
          "type": "DRUG"
        },
        {
          "name": "REDCap",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Saliva Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Telephone Counseling Sessions",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Nicotine lozenge",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "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": 202,
      "start_date": "2015-01",
      "completion_date": "2021-08",
      "has_results": true,
      "last_update_posted_date": "2023-07-20",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 3,
      "location_summary": "Tampa, Florida • Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02157610"
    },
    {
      "nct_id": "NCT00394420",
      "title": "Emergency Department Telephone Quitline",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Dependence"
      ],
      "interventions": [
        {
          "name": "Telephone Quitline",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2003-09",
      "completion_date": "2006-04",
      "has_results": false,
      "last_update_posted_date": "2010-01-20",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00394420"
    },
    {
      "nct_id": "NCT05852860",
      "title": "A Patient-Oriented Research Mentoring Program in Tobacco Dependence and Implementation Science Research",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV",
        "Smoking",
        "Tobacco Use",
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "Clinician Nudge",
          "type": "OTHER"
        },
        {
          "name": "Patient Nudge",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 500,
      "start_date": "2023-12-01",
      "completion_date": "2027-02-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-14",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05852860"
    },
    {
      "nct_id": "NCT03405220",
      "title": "Testing a Self-affirmation Intervention for Use in a Mobile Application",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking",
        "Smoking Cessation",
        "Smoking, Tobacco"
      ],
      "interventions": [
        {
          "name": "Self affirmation, 10 items, written examples",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self affirmation, 10 items, no examples",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self affirmation, 10 items, imagined examples",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self affirmation, 5 items, written examples",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self affirmation, 5 items, no examples",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self affirmation, 5 items, imagined examples",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self affirmation, 3 items, written examples",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self affirmation, 3 items, no examples",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Self affirmation, 3 items, imagined examples",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Kent State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 900,
      "start_date": "2018-01-16",
      "completion_date": "2018-09",
      "has_results": false,
      "last_update_posted_date": "2018-05-21",
      "last_synced_at": "2026-10-19T23:40:02.984Z",
      "location_count": 1,
      "location_summary": "Kent, Ohio",
      "locations": [
        {
          "city": "Kent",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03405220"
    }
  ]
}