Drug profile

The FDA adverse-event record for Isoflupredone Acetate

36 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Isoflupredone Acetate. See the species affected, top reactions, and outcomes below.

36
adverse-event reports
47.2%
death-coded share
Cattle
most-reported species
7
Death - top reaction
Verify with FDA CVM →
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
36
Total Reports
17
Deaths Reported
47.2%
Death Rate

Active Ingredients

Isoflupredone Acetate

Administration Routes

IntramuscularUnknownIntra-ArticularIntravenous

Species Affected

Cattle 19
Unknown 5
Horse 5
Pig 5
Cat 1
Dog 1

Most Affected Breeds

Holstein-Friesian also known as Holstein 9
Cattle (other) 9
Unknown 5
Pig (unknown) 3
Thoroughbred 2
Warmblood (unspecified) 2
Crossbred Porcine/Pig 2
Domestic Shorthair 1
Retriever - Labrador 1
Mixed (Cattle) 1

Most Reported Reactions

Death 7
Death by euthanasia 4
Recumbency 4
Anaphylaxis 3
Color, Abnormal 3
Joint effusion 3
Anaphylactic-type reaction 3
Dyspnoea 3
Abortion 3
Increased mortality rate 3
Sudden death 2
Sternoabdominal recumbency 2

Outcome Breakdown

Died
14 (35.0%)
Recovered/Normal
11 (27.5%)
Outcome Unknown
9 (22.5%)
Euthanized
4 (10.0%)
Ongoing
2 (5.0%)

Isoflupredone Acetate Adverse Event Insights

36 reports name Isoflupredone Acetate; 17 recorded a death outcome (47.2% of reported events, not a population-level mortality rate). Active ingredient: Isoflupredone Acetate. Administration routes: Intramuscular, Unknown, Intra-Articular, Intravenous.

By species: Cattle (19 reports), Unknown (5 reports), Horse (5 reports). By breed: Holstein-Friesian also known as Holstein (9), Cattle (other) (9), Unknown (5).

Leading clinical signs: Death (7), Death by euthanasia (4), Recumbency (4), Anaphylaxis (3). Outcome, 40 coded reports: Died leads at 35.0%.

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.