Reaction profile

The FDA adverse-event record for cognitive impairment

171 FDA adverse-event reports reference cognitive impairment (VeDDRA 1384). See the species, breeds, and drugs most associated with it below.

171
reports citing this reaction
28.7%
death-coded share
Dog
most-affected species
Trilostane
most-associated drug
Verify with FDA CVM →
171
Total Reports
49
Deaths
28.7%
Death Rate

Species Most Affected

Dog 157
Cat 12
Horse 1
Rabbit 1

Breeds Most Affected

Retriever - Labrador 23
Crossbred Canine/dog 12
Terrier - Yorkshire 10
Terrier (unspecified) 8
Dog (unknown) 6
Shepherd Dog - Australian 5
Boxer (German Boxer) 5
Terrier - Rat 5
Domestic Shorthair 4
Chihuahua 4

Associated Drugs

Trilostane 46
Bedinvetmab 46
Carprofen 18
Ivermectin + Pyrantel As Pamoate Salt 16
Gabapentin 16
Afoxolaner 12
Fluralaner 13.64% 12-Week Chew 10
Oclacitinib Maleate 9
Grapiprant 8
Milbemycin Oxime + Spinosad 6
Fluralaner Chew Tablets 6
Pyrantel Pamoate;Sarolaner 6
Selamectin 5
Maropitant Citrate 5
Prednisone 4
Buprenorphine 4
Desoxycortone Pivalate 4
Enrofloxacin 4
Sarolaner 3
Enalapril 3

Cognitive impairment Reaction Insights

171 reports name Cognitive impairment; 49 recorded a death outcome (28.7% of reported events, not a population-level mortality rate). VeDDRA code: 1384.

By species: Dog (157 reports), Cat (12 reports), Horse (1 reports). By breed: Retriever - Labrador (23), Crossbred Canine/dog (12), Terrier - Yorkshire (10).

Most co-reported drugs: Trilostane (46 reports), Bedinvetmab (46 reports), Carprofen (18 reports), Ivermectin + Pyrantel As Pamoate Salt (16 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.