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FDA ADE reports for Butorphanol

ade_butorphanol_adverse_events

ade en 2026-07-22

Butorphanol — FDA Animal & Veterinary Adverse Event (ADE) Reports

Source: openFDA animalandveterinary/event.json, the FDA Center for Veterinary Medicine (CVM) adverse event report database. Data pulled 2026-07-22. Counts are report-level: one report may list multiple reactions and multiple animals, so figures are not additive and do not imply causation. Butorphanol is a active ingredient.

Total reports

Butorphanol: 3858

Reports by species (top entries)

  • Dog 2460
  • Cat 1275
  • Horse 98
  • Other 4
  • Other Equids 3
  • Human 2

Top reported reactions (VEDDRA terms, top entries)

  • Lack of efficacy - NOS 501
  • Death 402
  • Vomiting 396
  • Lethargy (see also Central nervous system depression in 'Neurological') 297
  • Diarrhoea 266
  • Anorexia 256
  • Lethargy (see also Central nervous system depression in Neurological) 241
  • Not eating 241
  • Bradycardia 236
  • Death by euthanasia 222

Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b9.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).

Sources

FDA ADE reports for Butorphanol (active ingredient) — total reports, species & reaction breakdown
Source document: FDA FAERS / openFDA Animal & Veterinary Event Reports
US FDA Center for Veterinary Medicine (openFDA animal & veterinary event database)retrieved 2026-07-22

Verification file: pdf-raw/ade/ade_active_ingredients_2026-07-22_b9.json

Link points to the issuing authority's site; a direct document link is still being verified.

Machine access

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Raw JSON ↗ llm.txt OpenAPI