Trimethoprim — 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. Trimethoprim is a active ingredient.
Total reports
Trimethoprim: 37
Reports by species (top entries)
- Horse 12
- Cat 2
- Dog 2
- Donkey 1
Top reported reactions (VEDDRA terms, top entries)
- Appearance, Abnormal 5
- Containers, Leaking 4
- Injection site swelling 3
- Seal, Abnormal 3
- Caps, Abnormal 2
- Colic 2
- Dehiscence 2
- Injection site alopecia 2
- Injection site mucopurulent discharge 2
- Injection site necrosis 2
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b28.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).