Drug profile

The FDA adverse-event record for Poloxalene

10 FDA reports name Poloxalene, a lower-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#2632 of 2,679
by report volume (all drugs)
10
adverse-event reports
20.0%
death-coded share
Cattle
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Poloxalene ranks #2536 of 2679 by total reports (10). Death-coded-share rank requires at least 50 reports. 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)
#2536
This drug, reports of 2679

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.

Signature read: 10 reports place Poloxalene in the lower third of FDA AER volume (#2632 of 2,679).

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
10
Total Reports
2
Deaths Reported
20.0%
Death-coded share of reports

Active Ingredients

Poloxalene

Administration Routes

UnknownOral

Species Affected

Cattle 5
Unknown 4
Sheep 1

Most Affected Breeds

Unknown 4
Aberdeen Angus 3
Sheep (other) 1
Holstein-Friesian also known as Holstein 1
Mixed (Cattle) 1

Most Reported Reactions

Color, Abnormal 2
Vials, Leaking 1
Caps, Abnormal 1
Solution, Abnormal 1
Oral ulceration 1
Death by euthanasia 1
Death 1
Inappropriate preparation of medication 1
INEFFECTIVE, OTHER DRUG(S) 1
Lack of efficacy - NOS 1
Bloated 1
Lameness 1

Outcome Breakdown

Recovered/Normal
2 (40.0%)
Euthanized
1 (20.0%)
Died
1 (20.0%)
Outcome Unknown
1 (20.0%)

Poloxalene: high death-coded share 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.

What to do with this drug

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 Poloxalene (#2632 of 2,679 by report volume); death-coded 20.0%. PlainBreed drug row · report volume stamp 10 · 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 →