Acetaminophen — 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. Acetaminophen is a active ingredient.
Total reports
Acetaminophen: 69
Reports by species (top entries)
- Dog 55
- Human 10
- Horse 4
Top reported reactions (VEDDRA terms, top entries)
- Death by euthanasia 11
- Abnormal radiograph finding 10
- Lethargy (see also Central nervous system depression in Neurological) 10
- Lack of efficacy - NOS 8
- Lethargy (see also Central nervous system depression in 'Neurological') 8
- Weakness 8
- Ataxia 7
- Diarrhoea 7
- Hypochloraemia 7
- Vomiting 7
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b23.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).