Monensin — 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. Monensin is a active ingredient.
Total reports
Monensin: 2605
Reports by species (top entries)
- Cattle 1964
- Turkey 193
- Horse 117
- Chicken 95
- Goat 42
- Sheep 33
Top reported reactions (VEDDRA terms, top entries)
- Death 1187
- Diarrhoea 250
- Milk production decrease 209
- Decreased appetite 203
- Lack of efficacy (protozoa) - Coccidia 197
- Not eating 187
- Lack of efficacy - NOS 175
- NT - Abnormal necropsy finding NOS 155
- Anorexia 150
- Recumbency 132
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b9.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).