Drug profile

The FDA adverse-event record for Trenbolone Acet/Estrad Sr Imp

166 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Trenbolone Acet/Estrad Sr Imp. See the species affected, top reactions, and outcomes below.

166
adverse-event reports
34.9%
death-coded share
Cattle
most-reported species
47
Death - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
166
Total Reports
58
Deaths Reported
34.9%
Death Rate

Active Ingredients

Trenbolone Acet/Estrad Sr Imp

Administration Routes

UnknownSubcutaneousParenteralOther

Species Affected

Cattle 87
Unknown 78
Human 1

Most Affected Breeds

Unknown 79
Cattle (other) 47
Crossbred Bovine/Cattle 15
Cattle (unspecified) 5
Aberdeen Angus 5
Mixed (Cattle) 4
Charolais 4
Holstein-Friesian also known as Holstein 3
Red Angus 2
Cattle (unknown) 2

Most Reported Reactions

Death 47
Appearance, Abnormal 28
Color, Abnormal 26
Lack of efficacy - NOS 26
Behavioural disorder NOS 21
Product Defect, General 17
Lameness 17
Product problem 15
Difficulty of Use 9
Underfilling, Container 9
Underfilling, Package 9
Death by euthanasia 8

Outcome Breakdown

Died
50 (33.3%)
Outcome Unknown
46 (30.7%)
Ongoing
22 (14.7%)
Recovered/Normal
19 (12.7%)
Euthanized
13 (8.7%)

Trenbolone Acet/Estrad Sr Imp Adverse Event Insights

166 reports name Trenbolone Acet/Estrad Sr Imp; 58 recorded a death outcome (34.9% of reported events, not a population-level mortality rate). Active ingredient: Trenbolone Acet/Estrad Sr Imp. Administration routes: Unknown, Subcutaneous, Parenteral, Other.

By species: Cattle (87 reports), Unknown (78 reports), Human (1 reports). By breed: Unknown (79), Cattle (other) (47), Crossbred Bovine/Cattle (15).

Leading clinical signs: Death (47), Appearance, Abnormal (28), Color, Abnormal (26), Lack of efficacy - NOS (26). Outcome, 150 coded reports: Died leads at 33.3%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.