Clorsulon — 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. Clorsulon is a active ingredient.
Total reports
Clorsulon: 129
Reports by species (top entries)
- Cattle 46
- Human 6
- Dog 5
- Goat 3
- Sheep 3
- Cat 2
Top reported reactions (VEDDRA terms, top entries)
- Death 20
- Containers, Abnormal 19
- Lack of efficacy - NOS 9
- Accidental exposure 5
- Containers, Damaged 5
- Containers, Leaking 5
- Death by euthanasia 5
- Appearance, Abnormal 4
- Downer animal 4
- Lack of efficacy (endoparasite) - NOS 4
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b20.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).