{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Graphic+health+warning+labels",
    "query": {
      "intervention": "Graphic health warning labels"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 8,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-28T11:21:03.295Z",
  "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": "NCT03499340",
      "title": "Pictorial Warning Labels & Memory for Relative & Absolute Cigarette Health-risk Information Over Time in Adult Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation",
        "Smoking, Cigarette"
      ],
      "interventions": [
        {
          "name": "text-only PWL",
          "type": "BEHAVIORAL"
        },
        {
          "name": "low arousal graphic PWL",
          "type": "BEHAVIORAL"
        },
        {
          "name": "high arousal graphic PWL",
          "type": "BEHAVIORAL"
        },
        {
          "name": "absolute risk",
          "type": "BEHAVIORAL"
        },
        {
          "name": "relative risk",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "19 Years to 64 Years"
      },
      "enrollment_count": 3213,
      "start_date": "2017-07-10",
      "completion_date": "2017-10-03",
      "has_results": false,
      "last_update_posted_date": "2018-04-17",
      "last_synced_at": "2026-09-28T11:21:03.295Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03499340"
    },
    {
      "nct_id": "NCT05079477",
      "title": "Online Study of the Effects of Sugary Drink Warning Labels on Consumption",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Food Preferences"
      ],
      "interventions": [
        {
          "name": "Exposure to sugar-sweetened beverage warning labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exposure to calorie information",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 216,
      "start_date": "2021-10-06",
      "completion_date": "2023-01-17",
      "has_results": true,
      "last_update_posted_date": "2024-04-04",
      "last_synced_at": "2026-09-28T11:21:03.295Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05079477"
    },
    {
      "nct_id": "NCT03648138",
      "title": "Testing the Influence of Different Sugary Drink Warning Label Designs",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Weight Gain",
        "Diabetes Type 2"
      ],
      "interventions": [
        {
          "name": "Sugary drink warning labels",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1016,
      "start_date": "2020-01-17",
      "completion_date": "2020-01-28",
      "has_results": false,
      "last_update_posted_date": "2020-03-11",
      "last_synced_at": "2026-09-28T11:21:03.295Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03648138"
    },
    {
      "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": "2026-09-28T11:21:03.295Z",
      "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": "NCT05038163",
      "title": "Are Sugar-Sweetened Beverage Information Labels Well-Targeted",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Soft Drink Consumption",
        "Sugar-sweetened Beverages",
        "Information Labels"
      ],
      "interventions": [
        {
          "name": "Nutrition Facts",
          "type": "OTHER"
        },
        {
          "name": "Text Warning",
          "type": "OTHER"
        },
        {
          "name": "Graphic Warning",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "National Bureau of Economic Research, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5845,
      "start_date": "2021-10-18",
      "completion_date": "2021-12-22",
      "has_results": true,
      "last_update_posted_date": "2024-12-11",
      "last_synced_at": "2026-09-28T11:21:03.295Z",
      "location_count": 1,
      "location_summary": "Berkeley, California",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05038163"
    },
    {
      "nct_id": "NCT03723616",
      "title": "Reactions to Warnings on Hookah Ads",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Reactions to Warnings",
        "Hookah Smoking"
      ],
      "interventions": [
        {
          "name": "Ads Only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Ads with text-only health warning labels (HWLs)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Ads with text + graphic health warning labels (HWLs)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "34 Years",
        "sex": "ALL",
        "summary": "18 Years to 34 Years"
      },
      "enrollment_count": 2588,
      "start_date": "2018-10-05",
      "completion_date": "2021-03-26",
      "has_results": true,
      "last_update_posted_date": "2025-12-18",
      "last_synced_at": "2026-09-28T11:21:03.295Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03723616"
    },
    {
      "nct_id": "NCT03654586",
      "title": "Effects of Sugary Drink Warning Labels",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Diabetes",
        "Weight Gain"
      ],
      "interventions": [
        {
          "name": "Sugary drink warning labels",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 337,
      "start_date": "2018-07-30",
      "completion_date": "2020-03-12",
      "has_results": false,
      "last_update_posted_date": "2021-04-23",
      "last_synced_at": "2026-09-28T11:21:03.295Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03654586"
    },
    {
      "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": "2026-09-28T11:21:03.295Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06179043"
    }
  ]
}