{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=varenicline+tartrate",
    "query": {
      "intervention": "varenicline tartrate"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 273,
    "total_pages": 28,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=varenicline+tartrate&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T18:23:30.528Z",
  "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": "NCT06373679",
      "title": "Switch or Quit R01",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigarette Smoking",
        "Smoking Behaviors"
      ],
      "interventions": [
        {
          "name": "Switching to E-Cigarette",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Switching using Medication",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 225,
      "start_date": "2024-07-10",
      "completion_date": "2027-05-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06373679"
    },
    {
      "nct_id": "NCT06609369",
      "title": "Neural Mechanisms Connecting Deficient Sleep and Smoking Relapse",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Tobacco Use",
        "Tobacco Cessation",
        "Insomnia"
      ],
      "interventions": [
        {
          "name": "Experimental health intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Varenicline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "Yale 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": 114,
      "start_date": "2025-04-21",
      "completion_date": "2029-06",
      "has_results": false,
      "last_update_posted_date": "2026-06-05",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 2,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06609369"
    },
    {
      "nct_id": "NCT00992771",
      "title": "Study to Determine the Safety and Tolerability of Varenicline (Chantix®) in Treating Spinocerebellar Ataxia Type 3",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Spinocerebellar Ataxia Type 3"
      ],
      "interventions": [
        {
          "name": "varenicline",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 20,
      "start_date": "2009-10",
      "completion_date": "2011-04",
      "has_results": false,
      "last_update_posted_date": "2012-06-18",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 3,
      "location_summary": "Los Angeles, California • Gainesville, Florida • Tampa, Florida",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00992771"
    },
    {
      "nct_id": "NCT05514041",
      "title": "Evaluation of Tear Film Quality and Stability in Subjects With Dry Eye Disease Using OC-01 (Varenicline Solution) Nasal Spray 0.03 mg as Compared to Vehicle Control Nasal Spray",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Dry Eye Disease"
      ],
      "interventions": [
        {
          "name": "Varenicline solution",
          "type": "DRUG"
        },
        {
          "name": "Placebo nasal spray (OC-01 Vehicle Nasal Spray)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stephenson Eye Associates",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2022-10-11",
      "completion_date": "2023-12-05",
      "has_results": false,
      "last_update_posted_date": "2026-05-05",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 1,
      "location_summary": "Venice, Florida",
      "locations": [
        {
          "city": "Venice",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05514041"
    },
    {
      "nct_id": "NCT00143325",
      "title": "An Open Label Study That Compares Varenicline to Transdermal Nicotine Patch for 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": 730,
      "start_date": "2005-01",
      "completion_date": "2006-06",
      "has_results": false,
      "last_update_posted_date": "2007-06-04",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 6,
      "location_summary": "Palo Alto, California • Santa Ana, California • Farmington, Connecticut + 3 more",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Santa Ana",
          "state": "California"
        },
        {
          "city": "Farmington",
          "state": "Connecticut"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Worcester",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00143325"
    },
    {
      "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": "2026-09-29T18:23:30.528Z",
      "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": "NCT01456936",
      "title": "Study Evaluating The Safety And Efficacy Of Varenicline and Bupropion For Smoking Cessation In Subjects With And Without A History Of Psychiatric Disorders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "varenicline tartrate",
          "type": "DRUG"
        },
        {
          "name": "bupropion hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Nicotine Replacement Therapy Patch",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 8144,
      "start_date": "2011-11",
      "completion_date": "2015-01",
      "has_results": true,
      "last_update_posted_date": "2016-06-10",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 77,
      "location_summary": "Mobile, Alabama • Phoenix, Arizona • Encino, California + 61 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Encino",
          "state": "California"
        },
        {
          "city": "Escondido",
          "state": "California"
        },
        {
          "city": "Imperial",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01456936"
    },
    {
      "nct_id": "NCT01378858",
      "title": "Varenicline Smoking Cessation Treatment for Methadone Maintenance Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Disorder",
        "Medication Adherence"
      ],
      "interventions": [
        {
          "name": "Varenicline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Albert Einstein College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2011-07",
      "completion_date": "2015-07",
      "has_results": true,
      "last_update_posted_date": "2021-03-11",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01378858"
    },
    {
      "nct_id": "NCT05136924",
      "title": "IIT Assessing OC-01Nasal Spray on Symptoms of DED Following CXL",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Dry Eye Disease"
      ],
      "interventions": [
        {
          "name": "OC-01 (varenicline 1.2mg/ml) nasal spray vs Placebo",
          "type": "DRUG"
        },
        {
          "name": "Placebo (vehicle) nasal spray",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Vance Thompson Vision - MT",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2021-12-01",
      "completion_date": "2022-06-01",
      "has_results": false,
      "last_update_posted_date": "2021-11-30",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 1,
      "location_summary": "Bozeman, Montana",
      "locations": [
        {
          "city": "Bozeman",
          "state": "Montana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05136924"
    },
    {
      "nct_id": "NCT02683161",
      "title": "Pre to Postoperative Smoking Cessation",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cigarette Smoking",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Contingency Management",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavioral Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 5,
      "start_date": "2015-10",
      "completion_date": "2017-07",
      "has_results": true,
      "last_update_posted_date": "2018-07-17",
      "last_synced_at": "2026-09-29T18:23:30.528Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02683161"
    }
  ]
}