Drug profile

The FDA adverse-event record for Oclacitinib

755 FDA reports name Oclacitinib, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#223 of 2,679
by report volume (all drugs)
755
adverse-event reports
7.2%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Oclacitinib ranks #223 of 2679 by total reports (755) and #687 of 1130 by death-coded share (7.2%). 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)
#223
This drug, reports of 2679
#687
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. Oclacitinib has 755 reports now versus 733 in that prior snapshot: 22 more (3.0%).

Report change
+22
Death-coded reports
+2
Death-coded share
+0.1 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 Oclacitinib changes

Signature read: 755 reports place Oclacitinib in the upper third of FDA AER volume (#223 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.
755
Total Reports
54
Deaths Reported
7.2%
Death-coded share of reports

Active Ingredients

Oclacitinib

Administration Routes

OralUnknownIntragastric

Species Affected

Dog 700
Unknown 52
Cat 2
Horse 1

Most Affected Breeds

Retriever - Labrador 68
Unknown 60
Shih Tzu 42
Crossbred Canine/dog 37
Shepherd Dog - German 31
Chihuahua 30
Pit Bull 28
Retriever - Golden 24
Terrier - Yorkshire 23
Beagle 22

Most Reported Reactions

Vomiting 118
Lack of efficacy - NOS 86
Diarrhoea 83
Lethargy (see also Central nervous system depression in 'Neurological') 57
Not eating 45
Lethargy (see also Central nervous system depression in Neurological) 42
Anorexia 37
Pruritus 36
Behavioural disorder NOS 36
Elevated blood urea nitrogen (BUN) 35
Elevated serum alkaline phosphatase (SAP) 33
Decreased appetite 33

Outcome Breakdown

Outcome Unknown
303 (43.0%)
Recovered/Normal
209 (29.6%)
Ongoing
116 (16.5%)
Euthanized
30 (4.3%)
Died
24 (3.4%)
Recovered with Sequela
23 (3.3%)

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

Similar report volume

Nearest other drugs by FDA report count (755 here).

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 Oclacitinib (#223 of 2,679 by report volume); death-coded 7.2%. PlainBreed drug row · report volume stamp 755 · 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 →