Trenbolone — 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. Trenbolone is a active ingredient.
Total reports
Trenbolone: 39
Reports by species (top entries)
- Cattle 18
- Human 7
- Dog 1
Top reported reactions (VEDDRA terms, top entries)
- Death 7
- Respiratory tract disorder NOS 7
- Injection site swelling 6
- Decreased appetite 5
- Unclassifiable adverse event 5
- Weight loss 4
- Appearance, Abnormal 3
- Behavioural disorder NOS 3
- Implant, Abnormal 3
- NT - chronic (broncho)pneumonia/pleuropneumonia 3
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b26.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).