{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=varenicline+%28Chantix%29",
    "query": {
      "intervention": "varenicline (Chantix)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 277,
    "total_pages": 28,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=varenicline+%28Chantix%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-28T22:47:33.400Z",
  "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": "NCT00749658",
      "title": "Human Laboratory Study of Varenicline and Bupropion for Nicotine Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Nicotine Dependence",
        "Nicotine Withdrawal"
      ],
      "interventions": [
        {
          "name": "Bupropion",
          "type": "DRUG"
        },
        {
          "name": "Varenicline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 121,
      "start_date": "2008-11",
      "completion_date": "2010-09",
      "has_results": true,
      "last_update_posted_date": "2020-11-23",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00749658"
    },
    {
      "nct_id": "NCT00895557",
      "title": "Assessing the Impact of Varenicline on Brain-Behavior Vulnerability",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Varenicline and the Blunting of Cocaine Cues"
      ],
      "interventions": [
        {
          "name": "chantix",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 0,
      "start_date": "2007-12",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2016-09-08",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00895557"
    },
    {
      "nct_id": "NCT01511614",
      "title": "Nicotine Withdrawal Symptoms and Smoking Relapse",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "Transcranial Direct Current Stimulation",
          "type": "DEVICE"
        },
        {
          "name": "sham",
          "type": "DEVICE"
        },
        {
          "name": "Nicotine patch",
          "type": "DRUG"
        },
        {
          "name": "Placebo patch",
          "type": "DRUG"
        },
        {
          "name": "Varenicline Pill",
          "type": "DRUG"
        },
        {
          "name": "Placebo pill",
          "type": "DRUG"
        },
        {
          "name": "Motivational Interviewing",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "National Institute on Drug Abuse (NIDA)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 112,
      "start_date": "2013-05-20",
      "completion_date": "2020-03-30",
      "has_results": true,
      "last_update_posted_date": "2024-05-31",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01511614"
    },
    {
      "nct_id": "NCT01111149",
      "title": "Varenicline and Smoking Cessation in Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Sugar Pill",
          "type": "OTHER"
        },
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Bupropion HCl",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 24,
      "start_date": "2009-12",
      "completion_date": "2012-08",
      "has_results": true,
      "last_update_posted_date": "2014-07-17",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01111149"
    },
    {
      "nct_id": "NCT00664755",
      "title": "Menstrual Cycle Effects on Smoking Cessation and Cue Reactivity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "varenicline",
          "type": "DRUG"
        },
        {
          "name": "transdermal nicotine patch",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 140,
      "start_date": "2007-07",
      "completion_date": "2013-12",
      "has_results": true,
      "last_update_posted_date": "2018-05-24",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00664755"
    },
    {
      "nct_id": "NCT07171112",
      "title": "Smoking Cessation Trial in Recurrent Acute Pancreatitis and Chronic Pancreatitis",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pancreatitis, Chronic",
        "Pancreatitis, Acute",
        "Recurrent Acute Pancreatitis",
        "Smoking (Tobacco) Addiction"
      ],
      "interventions": [
        {
          "name": "Standard Varenicline Dosing (1 mg BID)",
          "type": "DRUG"
        },
        {
          "name": "Bupropion 150 mg twice daily",
          "type": "DRUG"
        },
        {
          "name": "Increased Varenicline Dosing (1mg TID)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 0,
      "start_date": "2025-11-06",
      "completion_date": "2026-07-02",
      "has_results": false,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07171112"
    },
    {
      "nct_id": "NCT02460900",
      "title": "Optimizing Smoking Cessation for People With HIV/AIDS Who Smoke",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Smoking",
        "HIV"
      ],
      "interventions": [
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Positively Smoke Free",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Standard of Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "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": 184,
      "start_date": "2016-07",
      "completion_date": "2021-04",
      "has_results": true,
      "last_update_posted_date": "2025-03-13",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02460900"
    },
    {
      "nct_id": "NCT01560507",
      "title": "Tailored Smoking Cessation Treatment for LIVE FOR LIFE® Participants",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Cigarette Smoking",
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "varenicline (Chantix)",
          "type": "DRUG"
        },
        {
          "name": "bupropion (Zyban)",
          "type": "DRUG"
        },
        {
          "name": "nicotine patches",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Duke University",
      "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": 19,
      "start_date": "2012-05",
      "completion_date": "2013-07",
      "has_results": true,
      "last_update_posted_date": "2014-12-24",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Raleigh, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Raleigh",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01560507"
    },
    {
      "nct_id": "NCT02162849",
      "title": "Reward Sensitivity and Pharmacotherapy for Smoking Cessation",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Tobacco Use Cessation"
      ],
      "interventions": [
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Nicotine Patch",
          "type": "DRUG"
        },
        {
          "name": "Placebo Patch",
          "type": "DRUG"
        },
        {
          "name": "Placebo Tablet",
          "type": "DRUG"
        },
        {
          "name": "Questionnaires",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Counseling Sessions",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Lab Session",
          "type": "OTHER"
        },
        {
          "name": "Saliva Test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "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": 204,
      "start_date": "2015-12-14",
      "completion_date": "2028-02-28",
      "has_results": false,
      "last_update_posted_date": "2026-07-16",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02162849"
    },
    {
      "nct_id": "NCT01571167",
      "title": "Varenicline as a Treatment for Methamphetamine Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Methamphetamine Dependence",
        "Methamphetamine Abuse",
        "Substance Abuse"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Varenicline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 17,
      "start_date": "2011-01",
      "completion_date": "2012-02",
      "has_results": false,
      "last_update_posted_date": "2013-06-13",
      "last_synced_at": "2026-09-28T22:47:33.400Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01571167"
    }
  ]
}