Reaction profile

The FDA adverse-event record for apathy

251 FDA adverse-event reports reference apathy (VeDDRA 1212). See the species, breeds, and drugs most associated with it below.

251
reports citing this reaction
12.7%
death-coded share
Dog
most-affected species
Afoxolaner 28.3 Mg Chewable Tablets
most-associated drug
Verify with FDA CVM →
251
Total Reports
32
Deaths
12.7%
Death Rate

Species Most Affected

Dog 234
Cat 6
Horse 4
Sheep 2
Human 1
Rabbit 1
Goat 1
Other Rodents 1
Pig 1

Breeds Most Affected

Crossbred Canine/dog 29
Shih Tzu 19
Retriever - Labrador 16
Terrier - Yorkshire 15
Dog (unknown) 14
Mixed (Dog) 13
Retriever - Golden 9
Maltese 8
Bulldog - French 7
Lhasa Apso 6

Associated Drugs

Afoxolaner 28.3 Mg Chewable Tablets 48
Afoxolaner 68 Mg Chewable Tablets 36
Afoxolaner 136 Mg Chewable Tablets 27
Afoxolaner 11.3 Mg Chewable Tablets 23
Firocoxib 14
Afoxolaner 2.27% Chewable Tablet (28.3 Mg) 11
Afoxolaner 2.27% Chewable Tablet (136 Mg) 10
Ivermectin/Pyrantel Pamoate Chewable 68Mcg/163Mg 7
Milbemycin Oxime + Spinosad 6
Afoxolaner 2.27% Chewable Tablet (68 Mg) 5
Spinosad 4
Firocoxib 227 Mg Chewable 4
Afoxolaner 4
Melarsomine Dihydrochloride Injection 4
Ivermectin 3
Afoxolaner 2.27% Chewable Tablet (11.3 Mg) 3
Ivermectin 10 Mg/Ml Solution For Injection 3
Isoflurane 3
Oclacitinib Maleate 3
Emodepside + Praziquantel 2

Apathy Reaction Insights

251 reports name Apathy; 32 recorded a death outcome (12.7% of reported events, not a population-level mortality rate). VeDDRA code: 1212.

By species: Dog (234 reports), Cat (6 reports), Horse (4 reports). By breed: Crossbred Canine/dog (29), Shih Tzu (19), Retriever - Labrador (16).

Most co-reported drugs: Afoxolaner 28.3 Mg Chewable Tablets (48 reports), Afoxolaner 68 Mg Chewable Tablets (36 reports), Afoxolaner 136 Mg Chewable Tablets (27 reports), Afoxolaner 11.3 Mg Chewable Tablets (23 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.