Thiabendazole — 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. Thiabendazole is a active ingredient.
Total reports
Thiabendazole: 906
Reports by species (top entries)
- Cat 419
- Dog 212
- Human 62
- Cattle 4
- Ferret 3
- Sheep 2
Top reported reactions (VEDDRA terms, top entries)
- Vomiting 77
- Lethargy (see also Central nervous system depression in 'Neurological') 73
- Lethargy (see also Central nervous system depression in Neurological) 69
- Vials, Damaged 60
- Not eating 54
- Elevated alanine aminotransferase (ALT) 51
- Lack of efficacy - NOS 50
- Anorexia 41
- Containers, Leaking 40
- Closure, Abnormal 39
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b12.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).