Reaction profile

The FDA adverse-event record for pr-brain, lesion(s)

101 FDA adverse-event reports reference pr-brain, lesion(s) (VeDDRA 99595). See the species, breeds, and drugs most associated with it below.

101
reports citing this reaction
97.0%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
101
Total Reports
98
Deaths
97.0%
Death Rate

Species Most Affected

Dog 66
Cat 14
Cattle 9
Horse 7
Pig 2
Alpaca 1
Guinea Pig 1
Turtle 1

Breeds Most Affected

Crossbred Canine/dog 6
Domestic Shorthair 6
Boxer (German Boxer) 6
Chihuahua 6
Retriever - Labrador 5
Holstein-Friesian also known as Holstein 4
Retriever - Golden 4
Terrier - Yorkshire 4
Beagle 4
Shepherd Dog - Australian 4

Associated Drugs

Milbemycin Oxime + Spinosad 16
Maropitant Citrate 8
Moxidectin 7
Carprofen 6
Oclacitinib Maleate 6
Afoxolaner 6
Cefovecin 5
Fluralaner Chew Tablets 5
Cefovecin Sodium 4
Spinosad 3
Propofol 3
Imidacloprid + Moxidectin 3
Cefpodoxime Proxetil 3
Phenobarbital 3
Ceftiofur Crystalline Free Acid 3
Dexamethasone 3
Enrofloxacin 3
Fenbendazol Suspension 3
Tulathromycin 2
Ceftiofur 2

PR-BRAIN, LESION(S) Reaction Insights

101 reports name PR-BRAIN, LESION(S); 98 recorded a death outcome (97.0% of reported events, not a population-level mortality rate). VeDDRA code: 99595.

By species: Dog (66 reports), Cat (14 reports), Cattle (9 reports). By breed: Crossbred Canine/dog (6), Domestic Shorthair (6), Boxer (German Boxer) (6).

Most co-reported drugs: Milbemycin Oxime + Spinosad (16 reports), Maropitant Citrate (8 reports), Moxidectin (7 reports), Carprofen (6 reports).

Read these counts as reporting volume, not risk: per our methodology, co-reporting reflects temporal association captured in voluntary submissions, not proof that a drug caused this reaction. A widely-prescribed drug will rack up more raw co-reports at an identical true rate than a rarely-used one, so compare within similar-exposure products.

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.