{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Varenicline&page=2",
    "query": {
      "intervention": "Varenicline",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Varenicline&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T02:36:03.369Z",
  "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": "NCT00713479",
      "title": "An Assessment of the Safety of Varenicline in Methamphetamine-dependent Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Methamphetamine Addiction",
        "Crystal Meth Addiction",
        "Amphetamine Addiction"
      ],
      "interventions": [
        {
          "name": "Varenicline, then placebo",
          "type": "DRUG"
        },
        {
          "name": "Placebo, then varenicline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Los Angeles",
      "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": 8,
      "start_date": "2008-07",
      "completion_date": "2009-09",
      "has_results": true,
      "last_update_posted_date": "2018-03-13",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00713479"
    },
    {
      "nct_id": "NCT02859142",
      "title": "Varenicline Augmentation of Patch Outcomes in Heavy Drinkers' Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Smoking Cessation",
        "Alcohol Drinking"
      ],
      "interventions": [
        {
          "name": "Chantix",
          "type": "DRUG"
        },
        {
          "name": "Behavioral Counseling Sessions",
          "type": "BEHAVIORAL"
        },
        {
          "name": "NicodermCQ",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 122,
      "start_date": "2018-03-29",
      "completion_date": "2020-10-15",
      "has_results": true,
      "last_update_posted_date": "2021-09-27",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02859142"
    },
    {
      "nct_id": "NCT00301145",
      "title": "Varenicline Tartrate With Telephone-Based Counseling and/or Internet-Based Counseling in Helping Adults Stop Smoking",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Unspecified Adult Solid Tumor, Protocol Specific"
      ],
      "interventions": [
        {
          "name": "smoking cessation intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "varenicline",
          "type": "DRUG"
        },
        {
          "name": "counseling intervention",
          "type": "OTHER"
        },
        {
          "name": "internet-based intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "SRI International",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1200,
      "start_date": "2005-10",
      "completion_date": "2008-11",
      "has_results": false,
      "last_update_posted_date": "2013-12-19",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 3,
      "location_summary": "Menlo Park, California • Seattle, Washington",
      "locations": [
        {
          "city": "Menlo Park",
          "state": "California"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00301145"
    },
    {
      "nct_id": "NCT03557294",
      "title": "Varenicline OTC Trial on Efficacy and Safety",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Tobacco Dependence",
        "Withdrawal Symptoms",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "1.0mg Varenicline b.i.d.",
          "type": "DRUG"
        },
        {
          "name": "0.5mg Varenicline b.i.d.",
          "type": "DRUG"
        },
        {
          "name": "0.0mg placebo Varenicline b.i.d.",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Arizona State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 313,
      "start_date": "2018-05-07",
      "completion_date": "2022-04-16",
      "has_results": true,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 2,
      "location_summary": "Phoenix, Arizona • Burbank, California",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Burbank",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03557294"
    },
    {
      "nct_id": "NCT05703672",
      "title": "Switching to E-cigarettes in Smokers Not Interested in Quitting",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Smoking Reduction"
      ],
      "interventions": [
        {
          "name": "Varenicline Tartrate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Electronic cigarette",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2023-07-17",
      "completion_date": "2027-02-28",
      "has_results": false,
      "last_update_posted_date": "2025-12-29",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 2,
      "location_summary": "Kansas City, Missouri",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Missouri"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05703672"
    },
    {
      "nct_id": "NCT06679374",
      "title": "Reducing Falls With Varenicline in Hypocholinergic Parkinson Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Varenicline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vikas Kotagal",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 102,
      "start_date": "2025-04-09",
      "completion_date": "2029-01",
      "has_results": false,
      "last_update_posted_date": "2026-03-31",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06679374"
    },
    {
      "nct_id": "NCT05541497",
      "title": "Varenicline for Treatment of E-cigarette Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Varenicline Tartrate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2022-11-04",
      "completion_date": "2023-09-01",
      "has_results": true,
      "last_update_posted_date": "2024-12-02",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 2,
      "location_summary": "New Haven, Connecticut • Charleston, South Carolina",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05541497"
    },
    {
      "nct_id": "NCT00934024",
      "title": "Impact of Varenicline on Blood-Oxygen-Level Dependent (BOLD) Functional Magnetic Resonance Imaging (fMRI) Activation on Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "varenicline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "21 Years to 60 Years"
      },
      "enrollment_count": 21,
      "start_date": "2009-04",
      "completion_date": "2012-01",
      "has_results": true,
      "last_update_posted_date": "2018-12-10",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00934024"
    },
    {
      "nct_id": "NCT04445662",
      "title": "Financial Incentives for Homeless Smokers: A Community-based RCT",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Smoking"
      ],
      "interventions": [
        {
          "name": "Financial incentives",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Varenicline",
          "type": "DRUG"
        },
        {
          "name": "Tobacco coaching",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 184,
      "start_date": "2021-06-10",
      "completion_date": "2024-10-24",
      "has_results": true,
      "last_update_posted_date": "2025-10-21",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04445662"
    },
    {
      "nct_id": "NCT00694044",
      "title": "Evaluation of Varenicline Safety, Tolerability, Pharmacokinetics and Pro-Cognitive Effects in Healthy Elderly Non-Smoking Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy",
        "Non-Smoking"
      ],
      "interventions": [
        {
          "name": "varenicline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "65 Years to 85 Years"
      },
      "enrollment_count": 50,
      "start_date": "2008-04",
      "completion_date": "2008-06",
      "has_results": false,
      "last_update_posted_date": "2009-06-02",
      "last_synced_at": "2026-09-29T02:36:03.369Z",
      "location_count": 2,
      "location_summary": "Miami, Florida • Orlando, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00694044"
    }
  ]
}