{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Cigarettes+with+varying+nicotine+content",
    "query": {
      "intervention": "Cigarettes with varying nicotine content"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T08:12:41.671Z",
  "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": "NCT04092387",
      "title": "Low Nicotine Content Cigarettes in Vulnerable Populations: Women of Reproductive Age",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use Disorder"
      ],
      "interventions": [
        {
          "name": "Varying the nicotine content of cigarettes",
          "type": "OTHER"
        },
        {
          "name": "E-Cigarettes",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "44 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 44 Years · Female only"
      },
      "enrollment_count": 326,
      "start_date": "2020-10-18",
      "completion_date": "2023-11-27",
      "has_results": true,
      "last_update_posted_date": "2025-03-18",
      "last_synced_at": "2026-09-30T08:12:41.671Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Burlington, Vermont",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04092387"
    },
    {
      "nct_id": "NCT02870218",
      "title": "Abuse Liability of Reduced Nicotine Content Cigarettes in the Context of Concurrent E-Cigarette Use",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Nicotine Addiction",
        "Cigarette Smoking"
      ],
      "interventions": [
        {
          "name": "Smoking research cigarettes with e-cigarette",
          "type": "DRUG"
        },
        {
          "name": "Nicotine discrimination thresholds",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rose Research Center, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 150,
      "start_date": "2019-05-01",
      "completion_date": "2021-07-28",
      "has_results": false,
      "last_update_posted_date": "2022-01-14",
      "last_synced_at": "2026-09-30T08:12:41.671Z",
      "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/NCT02870218"
    },
    {
      "nct_id": "NCT04090879",
      "title": "Low Nicotine Content Cigarettes in Vulnerable Populations: Affective Disorders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Tobacco Use Disorder"
      ],
      "interventions": [
        {
          "name": "Either normal nicotine content cigarettes (15.8mg/g) or reduced nicotine content cigarettes (0.4mg/g)",
          "type": "OTHER"
        },
        {
          "name": "E-Cigarettes",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Brown University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 326,
      "start_date": "2020-10-18",
      "completion_date": "2023-11-27",
      "has_results": true,
      "last_update_posted_date": "2025-04-01",
      "last_synced_at": "2026-09-30T08:12:41.671Z",
      "location_count": 2,
      "location_summary": "Providence, Rhode Island • Burlington, Vermont",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04090879"
    },
    {
      "nct_id": "NCT06614504",
      "title": "Nicotine Regulation for Dual Users of E-cigarettes and Cigarettes",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Tobacco Use Disorder"
      ],
      "interventions": [
        {
          "name": "Varying the nicotine content of cigarettes",
          "type": "OTHER"
        },
        {
          "name": "Varying the nicotine content of e-cigarettes",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 308,
      "start_date": "2024-11-01",
      "completion_date": "2028-09-30",
      "has_results": false,
      "last_update_posted_date": "2025-06-27",
      "last_synced_at": "2026-09-30T08:12:41.671Z",
      "location_count": 2,
      "location_summary": "Providence, Rhode Island • Burlington, Vermont",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06614504"
    },
    {
      "nct_id": "NCT02951143",
      "title": "Abuse Liability of Reduced Nicotine Content Cigarettes Within a Complex Tobacco Marketplace",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance-Related Disorders"
      ],
      "interventions": [
        {
          "name": "SPECTRUM cigarettes",
          "type": "DRUG"
        },
        {
          "name": "SPECTRUM cigarettes between",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Polytechnic Institute and State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 305,
      "start_date": "2017-01",
      "completion_date": "2019-11",
      "has_results": true,
      "last_update_posted_date": "2021-09-22",
      "last_synced_at": "2026-09-30T08:12:41.671Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02951143"
    },
    {
      "nct_id": "NCT04092101",
      "title": "Low Nicotine Content Cigarettes in Vulnerable Populations: Opioid Use Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Tobacco Use Disorder"
      ],
      "interventions": [
        {
          "name": "Cigarettes with varying nicotine content",
          "type": "OTHER"
        },
        {
          "name": "E-Cigarettes",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "21 Years to 70 Years"
      },
      "enrollment_count": 326,
      "start_date": "2020-10-18",
      "completion_date": "2023-11-27",
      "has_results": true,
      "last_update_posted_date": "2025-03-30",
      "last_synced_at": "2026-09-30T08:12:41.671Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Burlington, Vermont",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04092101"
    }
  ]
}