Drug profile

The FDA adverse-event record for Estradiol Benzoate; Trenbolone Acetate

127 FDA reports name Estradiol Benzoate; Trenbolone Acetate, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#688 of 2,679
by report volume (all drugs)
127
adverse-event reports
12.6%
death-coded share
Cattle
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Estradiol Benzoate; Trenbolone Acetate ranks #687 of 2679 by total reports (127) and #437 of 1130 by death-coded share (12.6%). National dual: Milbemycin Oxime + Spinosad is #1 of 2679 drugs by total adverse-event reports (149,624) at death-coded-share rank 965 of 1130 drugs with at least 50 reports (2.3%); separately, Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) is #1 highest death-coded share at 97.8% (report rank #821).

149,624
Milbemycin Oxime + Spinosad reports (#1)
97.8%
Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) death share (#1)
#687
This drug, reports of 2679
#437
This drug, death share of 1130

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Estradiol Benzoate; Trenbolone Acetate has 127 reports now versus 127 in that prior snapshot: 0 the same number of (0.0%).

Report change
+0
Death-coded reports
+0
Death-coded share
+0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Estradiol Benzoate; Trenbolone Acetate changes

Signature read: death-coded report count at 16 is the most distinctive stamp on Estradiol Benzoate; Trenbolone Acetate's FDA AER row.

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
127
Total Reports
16
Deaths Reported
12.6%
Death-coded share of reports

Active Ingredients

Estradiol Benzoate; Trenbolone Acetate

Administration Routes

Unknown

Species Affected

Cattle 65
Unknown 62

Most Affected Breeds

Unknown 62
Holstein-Friesian also known as Holstein 32
Mixed (Cattle) 26
Aberdeen Angus 3
Cattle (other) 2
Jersey 1
Crossbred Bovine/Cattle 1

Most Reported Reactions

Increased sexual interest 30
Containers, Damaged 27
Device Defective NOS 26
Implant, Abnormal 14
Sexual disorder NOS (see 'Reproductive' for named sexual disorders) 11
Death 8
Behavioural disorder NOS 5
Death by euthanasia 5
Lack of efficacy - NOS 5
No sign 4
Recumbency 3
Dispenser, Abnormal 3

Outcome Breakdown

Outcome Unknown
54 (68.4%)
Died
12 (15.2%)
Recovered/Normal
7 (8.9%)
Euthanized
4 (5.1%)
Recovered with Sequela
2 (2.5%)

Estradiol Benzoate; Trenbolone Acetate: high report volume in the FDA AER row

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.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Estradiol Benzoate; Trenbolone Acetate, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (12.6% here), distinct from the volume row.

What to do with this drug

  • Compare Estradiol Benzoate; Trenbolone Acetate's report volume and death-coded share against similar drugs nationwide. See similar drugs
  • Read how death-coded share differs from a mortality rate before drawing conclusions. Understanding adverse events
  • Browse the full drug directory to compare report counts across products. All drugs

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

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

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Estradiol Benzoate; Trenbolone Acetate (#688 of 2,679 by report volume); death-coded 12.6%. PlainBreed drug row · death-coded report count stamp 16 · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →