{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=FDA+Warnings+Text-Only",
    "query": {
      "intervention": "FDA Warnings Text-Only"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-10T18:46:06.796Z",
  "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": "2026-09-10T18:46:06.796Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03499340"
    },
    {
      "nct_id": "NCT05838378",
      "title": "Cigarillo Warnings Image Sorting Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking, Cigar"
      ],
      "interventions": [
        {
          "name": "Package image sorting with pictorial warnings",
          "type": "OTHER"
        },
        {
          "name": "Package image sorting with Surgeon General text-only warnings",
          "type": "OTHER"
        },
        {
          "name": "Package image sorting with FDA text-only warnings",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Boston 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": 764,
      "start_date": "2025-01-14",
      "completion_date": "2025-03-25",
      "has_results": true,
      "last_update_posted_date": "2026-04-08",
      "last_synced_at": "2026-09-10T18:46:06.796Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05838378"
    },
    {
      "nct_id": "NCT06413797",
      "title": "Little Cigar and Cigarillo Warnings for Youth",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Little Cigars and Cigarillos (LCC) Use"
      ],
      "interventions": [
        {
          "name": "FDA warnings + Image",
          "type": "BEHAVIORAL"
        },
        {
          "name": "FDA Warnings Text-Only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Surgeon General Text-Only Warnings",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "UNC Lineberger Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "15 Years to 20 Years"
      },
      "enrollment_count": 928,
      "start_date": "2024-07-18",
      "completion_date": "2024-11-25",
      "has_results": true,
      "last_update_posted_date": "2025-12-24",
      "last_synced_at": "2026-09-10T18:46:06.796Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06413797"
    },
    {
      "nct_id": "NCT05434013",
      "title": "The Impact of Cigarillo Warnings on Purchasing",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigar Smoking"
      ],
      "interventions": [
        {
          "name": "Cigarillo warnings-Surgeon General Text-Only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cigarillo warnings-FDA proposed text-only",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cigarillo warnings-Pictorial",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Boston 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": 1578,
      "start_date": "2022-06-24",
      "completion_date": "2022-07-21",
      "has_results": true,
      "last_update_posted_date": "2023-08-02",
      "last_synced_at": "2026-09-10T18:46:06.796Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05434013"
    },
    {
      "nct_id": "NCT05849051",
      "title": "Little Cigar and Cigarillo Warnings Among US Adults Who Use LCCs",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use"
      ],
      "interventions": [
        {
          "name": "Newly developed warnings with images at 30% size",
          "type": "BEHAVIORAL"
        },
        {
          "name": "FDA proposed text-only warnings at 30% size",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "UNC Lineberger Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 1029,
      "start_date": "2023-05-22",
      "completion_date": "2023-08-27",
      "has_results": true,
      "last_update_posted_date": "2025-01-08",
      "last_synced_at": "2026-09-10T18:46:06.796Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05849051"
    }
  ]
}