{
  "format": "healthspanledger-research-codebook",
  "schemaVersion": 1,
  "dataset": {
    "id": "fda-warning-letters",
    "name": "FDA warning letters naming GLP-1 and peptide sellers",
    "canonicalUrl": "https://healthspanledger.com/access/enforcement",
    "edition": "2026.08",
    "version": "f72779015267"
  },
  "columns": [
    {
      "name": "company",
      "type": "string",
      "nullable": false,
      "description": "Company name printed by FDA on the warning letter."
    },
    {
      "name": "issue_date",
      "type": "string",
      "nullable": false,
      "description": "ISO date FDA says the warning letter was issued."
    },
    {
      "name": "posted_date",
      "type": "string",
      "nullable": false,
      "description": "ISO date FDA says the warning letter was posted."
    },
    {
      "name": "issuing_office",
      "type": "string",
      "nullable": false,
      "description": "FDA office named as the issuer of the letter."
    },
    {
      "name": "subject",
      "type": "string",
      "nullable": false,
      "description": "Subject classification printed by FDA for the letter."
    },
    {
      "name": "response_date",
      "type": "string",
      "nullable": true,
      "description": "Response date published by FDA for the letter.",
      "missingMeaning": "FDA publishes no response date for this record."
    },
    {
      "name": "closeout_date",
      "type": "string",
      "nullable": true,
      "description": "Close-out date published by FDA for the letter.",
      "missingMeaning": "FDA publishes no close-out date; this does not prove the matter remains open."
    },
    {
      "name": "matched_search_terms",
      "type": "string",
      "nullable": false,
      "description": "Tracked query terms that matched the letter, separated by semicolons."
    },
    {
      "name": "letter_url",
      "type": "string",
      "nullable": false,
      "description": "Canonical FDA page for the exact warning letter."
    }
  ]
}