Reaction profile

The FDA adverse-event record for brain disorder nos

229 FDA adverse-event reports reference brain disorder nos (VeDDRA 1356). See the species, breeds, and drugs most associated with it below.

229
reports citing this reaction
55.5%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
229
Total Reports
127
Deaths
55.5%
Death Rate

Species Most Affected

Dog 200
Cat 25
Ferret 1
Horse 1
Mouse 1
Cattle 1

Breeds Most Affected

Retriever - Golden 17
Domestic Shorthair 16
Retriever - Labrador 12
Chihuahua 12
Crossbred Canine/dog 12
Dog (unknown) 11
Boxer (German Boxer) 9
Terrier (unspecified) 7
Maltese 6
Pug 6

Associated Drugs

Milbemycin Oxime + Spinosad 34
Fluralaner Chew Tablets 22
Carprofen 17
Maropitant Citrate 17
Gabapentin 15
Fluralaner 13.64% 12-Week Chew 15
Bedinvetmab 15
Oclacitinib Maleate 14
Spinosad 12
Prednisone 12
Afoxolaner 12
Pyrantel Pamoate;Sarolaner 11
Clindamycin 9
Sarolaner 9
Meloxicam 7
Rabies Vaccine 6
Anti-Il31 Mab Mcs Lot #1283563 6
Phenobarbital 6
Grapiprant 6
Fluralaner Spot-On Solution 6

Brain disorder NOS Reaction Insights

229 reports name Brain disorder NOS; 127 recorded a death outcome (55.5% of reported events, not a population-level mortality rate). VeDDRA code: 1356.

By species: Dog (200 reports), Cat (25 reports), Ferret (1 reports). By breed: Retriever - Golden (17), Domestic Shorthair (16), Retriever - Labrador (12).

Most co-reported drugs: Milbemycin Oxime + Spinosad (34 reports), Fluralaner Chew Tablets (22 reports), Carprofen (17 reports), Maropitant Citrate (17 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.