Reaction profile

The FDA adverse-event record for mental impairment nos

695 FDA adverse-event reports reference mental impairment nos (VeDDRA 1612). See the species, breeds, and drugs most associated with it below.

695
reports citing this reaction
25.9%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
695
Total Reports
180
Deaths
25.9%
Death Rate

Species Most Affected

Dog 556
Cat 120
Human 9
Horse 6
Sheep 1
Cattle 1
Other 1
Donkey 1

Breeds Most Affected

Domestic Shorthair 72
Retriever - Labrador 43
Crossbred Canine/dog 33
Chihuahua 27
Terrier - Yorkshire 25
Shepherd Dog - German 19
Shih Tzu 18
Retriever - Golden 18
Dog (unknown) 17
Boxer (German Boxer) 17

Associated Drugs

Milbemycin Oxime + Spinosad 142
Bedinvetmab 52
Maropitant Citrate 47
Gabapentin 44
Pyrantel Pamoate;Sarolaner 38
Fluralaner Chew Tablets 37
Buprenorphine 35
Afoxolaner 32
Spinosad 31
Carprofen 30
Cefovecin 27
Fluralaner 13.64% 12-Week Chew 26
Trilostane 25
Sarolaner 25
Oclacitinib Maleate 23
Moxidectin 21
Ivermectin + Pyrantel As Pamoate Salt 19
Milbemycin Oxime + Praziquantel 19
Meloxicam 16
Isoflurane 16

Mental impairment NOS Reaction Insights

695 reports name Mental impairment NOS; 180 recorded a death outcome (25.9% of reported events, not a population-level mortality rate). VeDDRA code: 1612.

By species: Dog (556 reports), Cat (120 reports), Human (9 reports). By breed: Domestic Shorthair (72), Retriever - Labrador (43), Crossbred Canine/dog (33).

Most co-reported drugs: Milbemycin Oxime + Spinosad (142 reports), Bedinvetmab (52 reports), Maropitant Citrate (47 reports), Gabapentin (44 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.