Drug profile

The FDA adverse-event record for Prednisolone

2,152 FDA reports name Prednisolone, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#106 of 2,679
by report volume (all drugs)
2,152
adverse-event reports
14.6%
death-coded share
Cat
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Prednisolone ranks #106 of 2679 by total reports (2,152) and #380 of 1130 by death-coded share (14.6%). 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)
#106
This drug, reports of 2679
#380
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. Prednisolone has 2,152 reports now versus 2,061 in that prior snapshot: 91 more (4.4%).

Report change
+91
Death-coded reports
+14
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 Prednisolone changes

Signature read: death-coded report count at 314 is the most distinctive stamp on Prednisolone'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.
2,152
Total Reports
314
Deaths Reported
14.6%
Death-coded share of reports

Active Ingredients

Prednisolone

Administration Routes

UnknownOralOphthalmicTopicalTransdermalSubcutaneousParenteralIntraocularOtherIntradermal

Species Affected

Cat 1,120
Dog 996
Unknown 24
Ferret 6
Horse 4
Cattle 1
Human 1

Most Affected Breeds

Domestic Shorthair 706
Domestic Longhair 101
Retriever - Labrador 96
Domestic Mediumhair 79
Terrier - Bull - American Pit 56
Chihuahua 51
Shepherd Dog - German 50
Crossbred Canine/dog 44
Unknown 40
Terrier - Yorkshire 35

Most Reported Reactions

Vomiting 350
Lethargy (see also Central nervous system depression in 'Neurological') 234
Lack of efficacy - NOS 207
Weight loss 203
Anorexia 199
Death by euthanasia 187
Lethargy (see also Central nervous system depression in Neurological) 185
Diarrhoea 183
Other abnormal test result NOS 165
Anaemia NOS 143
Decreased appetite 140
Not eating 132

Outcome Breakdown

Ongoing
895 (42.2%)
Outcome Unknown
489 (23.1%)
Recovered/Normal
391 (18.4%)
Euthanized
185 (8.7%)
Died
130 (6.1%)
Recovered with Sequela
30 (1.4%)

Prednisolone: 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 Prednisolone, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

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 Prednisolone (#106 of 2,679 by report volume); death-coded 14.6%. PlainBreed drug row · death-coded report count stamp 314 · 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 →