Drug profile

The FDA adverse-event record for Enrofloxacin

5,731 FDA reports name Enrofloxacin, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#41 of 2,679
by report volume (all drugs)
5,731
adverse-event reports
18.7%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Enrofloxacin ranks #41 of 2679 by total reports (5,731) and #264 of 1130 by death-coded share (18.7%). 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)
#41
This drug, reports of 2679
#264
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. Enrofloxacin has 5,731 reports now versus 5,670 in that prior snapshot: 61 more (1.1%).

Report change
+61
Death-coded reports
+20
Death-coded share
+0.2 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 Enrofloxacin changes

Signature read: death-coded report count at 1,073 is the most distinctive stamp on Enrofloxacin'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.
5,731
Total Reports
1,073
Deaths Reported
18.7%
Death-coded share of reports

Active Ingredients

Enrofloxacin

Administration Routes

UnknownOralSubcutaneousIntravenousIntramuscularParenteralOtherAuricular (Otic)TopicalOphthalmic

Species Affected

Dog 3,019
Unknown 1,462
Cat 689
Cattle 191
Human 171
Horse 51
Pig 50
Rabbit 25
Other Birds 12
Guinea Pig 9

Most Affected Breeds

Unknown 1,697
Domestic Shorthair 393
Retriever - Labrador 319
Crossbred Canine/dog 151
Dog (unknown) 123
Chihuahua 109
Retriever - Golden 109
Shepherd Dog - German 100
Shih Tzu 98
Boxer (German Boxer) 83

Most Reported Reactions

Vomiting 757
Lethargy (see also Central nervous system depression in 'Neurological') 595
Death by euthanasia 537
Death 499
Uncoded sign 481
Anorexia 478
Other abnormal test result NOS 445
Solution/Suspension, crystals 437
Solution, Abnormal 417
Diarrhoea 348
Seizure NOS 315
Lack of efficacy - NOS 273

Outcome Breakdown

Outcome Unknown
1,178 (28.1%)
Recovered/Normal
1,119 (26.7%)
Ongoing
751 (17.9%)
Died
552 (13.2%)
Euthanized
533 (12.7%)
Recovered with Sequela
64 (1.5%)

Enrofloxacin: 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.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Enrofloxacin, 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 Enrofloxacin (#41 of 2,679 by report volume); death-coded 18.7%. PlainBreed drug row · death-coded report count stamp 1,073 · 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 →