Drug profile

The FDA adverse-event record for Enrofloxacin

5,594 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Enrofloxacin. See the species affected, top reactions, and outcomes below.

5,594
adverse-event reports
18.5%
death-coded share
Dog
most-reported species
729
Vomiting - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
5,594
Total Reports
1,033
Deaths Reported
18.5%
Death Rate

Active Ingredients

Enrofloxacin

Administration Routes

UnknownOralSubcutaneousIntravenousIntramuscularParenteralOtherAuricular (Otic)TopicalOphthalmic

Species Affected

Dog 2,921
Unknown 1,449
Cat 670
Cattle 187
Human 171
Horse 50
Pig 49
Rabbit 25
Other Birds 12
Guinea Pig 9

Most Affected Breeds

Unknown 1,683
Domestic Shorthair 377
Retriever - Labrador 304
Crossbred Canine/dog 147
Dog (unknown) 123
Retriever - Golden 105
Chihuahua 101
Shepherd Dog - German 96
Shih Tzu 93
Boxer (German Boxer) 81

Most Reported Reactions

Vomiting 729
Lethargy (see also Central nervous system depression in 'Neurological') 595
Death by euthanasia 524
Uncoded sign 481
Death 472
Anorexia 468
Other abnormal test result NOS 436
Solution/Suspension, crystals 430
Solution, Abnormal 417
Diarrhoea 330
Seizure NOS 305
Lack of efficacy - NOS 253

Outcome Breakdown

Outcome Unknown
1,155 (28.4%)
Recovered/Normal
1,102 (27.1%)
Ongoing
703 (17.3%)
Died
525 (12.9%)
Euthanized
520 (12.8%)
Recovered with Sequela
64 (1.6%)

Enrofloxacin Adverse Event Insights

5,594 reports name Enrofloxacin; 1,033 recorded a death outcome (18.5% of reported events, not a population-level mortality rate). Active ingredient: Enrofloxacin. Administration routes: Unknown, Oral, Subcutaneous, Intravenous.

By species: Dog (2,921 reports), Unknown (1,449 reports), Cat (670 reports). By breed: Unknown (1,683), Domestic Shorthair (377), Retriever - Labrador (304).

Leading clinical signs: Vomiting (729), Lethargy (see also Central nervous system depression in 'Neurological') (595), Death by euthanasia (524), Uncoded sign (481). Outcome, 4,069 coded reports: Outcome Unknown leads at 28.4%.

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.