Nicarbazin — 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. Nicarbazin is a active ingredient.
Total reports
Nicarbazin: 196
Reports by species (top entries)
- Chicken 182
- Dog 2
- Human 2
Top reported reactions (VEDDRA terms, top entries)
- Death 81
- Lack of efficacy (protozoa) - Coccidia 57
- Increased mortality rate 47
- Lack of efficacy - NOS 19
- Enteritis 18
- Loss of egg quantity 17
- NT - Abnormal necropsy finding NOS 15
- Digestive tract disorder NOS 11
- Loss of egg quality 11
- Abnormal necropsy finding 9
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b18.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).