{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Health+Warning+Label",
    "query": {
      "intervention": "Health Warning Label"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 24,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Health+Warning+Label&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T08:34:52.682Z",
  "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": "NCT05714982",
      "title": "Impact of E-cigarette Device Warnings",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaping Behaviors"
      ],
      "interventions": [
        {
          "name": "Label with text health warning",
          "type": "OTHER"
        },
        {
          "name": "Label with pictorial health warning",
          "type": "OTHER"
        },
        {
          "name": "Label with neutral statements about vaping",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "UNC Lineberger Comprehensive 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": 1369,
      "start_date": "2023-02-23",
      "completion_date": "2024-07-23",
      "has_results": true,
      "last_update_posted_date": "2025-09-12",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05714982"
    },
    {
      "nct_id": "NCT04716010",
      "title": "Developing and Evaluating Product Messaging",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cancer of Colon",
        "Cancer of Rectum"
      ],
      "interventions": [
        {
          "name": "Control",
          "type": "OTHER"
        },
        {
          "name": "Warning Labels",
          "type": "OTHER"
        },
        {
          "name": "Tax",
          "type": "OTHER"
        },
        {
          "name": "Combined Warning Labels and Tax",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 4160,
      "start_date": "2021-10-18",
      "completion_date": "2021-10-28",
      "has_results": true,
      "last_update_posted_date": "2023-08-18",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04716010"
    },
    {
      "nct_id": "NCT07699198",
      "title": "Developing and Strengthening Cannabis Warnings: Warning Message Testing",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cannabis",
        "Marijuana Use"
      ],
      "interventions": [
        {
          "name": "Constituents",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cognitive Functioning",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cardiovascular Health",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Motor Vehicle Crashes",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Dependence",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Psychosis and Schizophrenia",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Mental Health",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Reproductive Health",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Respiratory Health",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Edibles",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cannabis Hyperemesis Syndrome",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1500,
      "start_date": "2026-07-13",
      "completion_date": "2026-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07699198"
    },
    {
      "nct_id": "NCT06296355",
      "title": "Impacts of Warning Labels on Ultra-Processed Foods",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Health Behavior",
        "Diet, Healthy"
      ],
      "interventions": [
        {
          "name": "Health Warning Label",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Identity Warning Label",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Barcode Label",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 4000,
      "start_date": "2024-08-09",
      "completion_date": "2024-09-11",
      "has_results": false,
      "last_update_posted_date": "2024-10-15",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06296355"
    },
    {
      "nct_id": "NCT02247908",
      "title": "Impact of Graphic Cigarette Warnings",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Surgeon General's Warning",
          "type": "OTHER"
        },
        {
          "name": "Graphic Warning",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2149,
      "start_date": "2014-10",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-09-14",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 2,
      "location_summary": "Oakland, California • Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02247908"
    },
    {
      "nct_id": "NCT02785484",
      "title": "Impact of Cigarette Pack Constituent Disclosures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigarette Smoking Behavior"
      ],
      "interventions": [
        {
          "name": "Label with constituent disclosure message",
          "type": "OTHER"
        },
        {
          "name": "Label with litter message",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 784,
      "start_date": "2016-09",
      "completion_date": "2017-03",
      "has_results": false,
      "last_update_posted_date": "2017-06-08",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02785484"
    },
    {
      "nct_id": "NCT05316584",
      "title": "A Novel Remote Patient and Medication Monitoring Solution to Improve Adherence and PerSiStence With IBD Therapy",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Inflammatory Bowel Diseases",
        "Crohn Disease",
        "Ulcerative Colitis"
      ],
      "interventions": [
        {
          "name": "Remote monitoring",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "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": 123,
      "start_date": "2022-09-06",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-20",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 5,
      "location_summary": "Baltimore, Maryland • New York, New York • Chapel Hill, North Carolina + 2 more",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05316584"
    },
    {
      "nct_id": "NCT06179043",
      "title": "Impact of Front-of-package Warning Labels on Perceived Weight Stigmatization",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Stigma"
      ],
      "interventions": [
        {
          "name": "Nutrient warning labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Text-only health warning labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Graphic health warning labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control labels",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 2522,
      "start_date": "2024-01-18",
      "completion_date": "2024-01-26",
      "has_results": false,
      "last_update_posted_date": "2024-02-13",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06179043"
    },
    {
      "nct_id": "NCT04907136",
      "title": "Developing and Testing Health Warning Labels on the ENDS Device",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Electronic Cigarette Use"
      ],
      "interventions": [
        {
          "name": "Preferred ENDS",
          "type": "OTHER"
        },
        {
          "name": "Preferred ENDS with HWL",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Florida International University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "21 Years to 35 Years"
      },
      "enrollment_count": 80,
      "start_date": "2023-12-13",
      "completion_date": "2027-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-05",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04907136"
    },
    {
      "nct_id": "NCT03511937",
      "title": "Impact of Sugar-Sweetened Beverage Health Warnings",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dietary Habits"
      ],
      "interventions": [
        {
          "name": "Sugar-Sweetened Beverage Health Warning Label",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Neutral Label",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 400,
      "start_date": "2018-05-11",
      "completion_date": "2018-09-19",
      "has_results": true,
      "last_update_posted_date": "2021-03-30",
      "last_synced_at": "2026-09-03T08:34:52.682Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03511937"
    }
  ]
}