Trenbolone; Estradiol; Tylosin Tartrate
85 adverse event reports submitted to the FDA
Active Ingredients
Administration Routes
Species Affected
Most Affected Breeds
Most Reported Reactions
Outcome Breakdown
Data Summary
| Metric | Value |
|---|---|
| Total adverse event reports | 85 |
| Reports involving death | 53 |
| Case-fatality rate (reported events) | 6240.0% |
| Distinct species in reports | 2 |
| Distinct breeds in reports | 9 |
| Distinct reactions reported | 20 |
| Active ingredients on file | 1 |
Source: FDA Center for Veterinary Medicine — Adverse Event Reporting (CVM AER). Counts reflect voluntary reports only.
Trenbolone; Estradiol; Tylosin Tartrate Adverse Event Insights
The FDA Center for Veterinary Medicine database currently holds 85 adverse event reports referencing Trenbolone; Estradiol; Tylosin Tartrate, including 53 reports in which the animal died — a 6240.0% case-fatality figure among reported events only, not a population-level mortality rate. Active ingredient on file: Trenbolone; Estradiol; Tylosin Tartrate. Reported administration routes include Other, Unknown, Subcutaneous, Parenteral. These numbers reflect voluntary submissions from pet owners, veterinarians, and manufacturers and therefore under-represent mild events and over-represent severe ones — a pattern the FDA has documented repeatedly for pharmacovigilance datasets.
The species most frequently named in Trenbolone; Estradiol; Tylosin Tartrate reports are Cattle (76 reports), Unknown (9 reports), with Cattle accounting for the largest share. Within those species, Cattle (unknown) (27), Crossbred Bovine/Cattle (26), Holstein-Friesian also known as Holstein (15) appear most often — though breed popularity and ownership density shape these counts as much as any drug-specific sensitivity. This distribution matters because the same active ingredient can behave very differently across body sizes, ages, and species physiology.
The most commonly reported clinical signs associated with Trenbolone; Estradiol; Tylosin Tartrate are Death (46), Behavioural disorder NOS (28), Unclassifiable adverse event (27), Respiratory tract disorder NOS (25). Of the 126 reports with a coded outcome, Outcome Unknown is the leading category at 44.4%. Because FDA adverse event data describes correlation rather than causation, these figures are best used to frame informed questions with a veterinarian and to compare reporting patterns across related products — not as a standalone safety verdict on Trenbolone; Estradiol; Tylosin Tartrate.
Source: FDA Center for Veterinary Medicine — Adverse Event Reports FDA Center for Veterinary Medicine — Adverse Event Reports Data reflects voluntary submissions and may not represent actual incidence rates
Read our methodology — how this data is sourced, computed, and verified.