Reaction profile

The FDA adverse-event record for irritability

329 FDA adverse-event reports reference irritability (VeDDRA 1559). See the species, breeds, and drugs most associated with it below.

329
reports citing this reaction
7.0%
death-coded share
Dog
most-affected species
Nitenpyram
most-associated drug
Verify with FDA CVM →
329
Total Reports
23
Deaths
7.0%
Death Rate

Species Most Affected

Dog 192
Cat 112
Horse 16
Cattle 4
Human 3
Other Cervids 1
Chicken 1

Breeds Most Affected

Domestic Shorthair 64
Retriever - Labrador 16
Chihuahua 15
Crossbred Canine/dog 15
Domestic Longhair 11
Cat (unknown) 9
Shih Tzu 9
Maltese 9
Retriever - Golden 7
Domestic Mediumhair 7

Associated Drugs

Nitenpyram 22
Buprenorphine 19
Afoxolaner 18
Milbemycin Oxime + Spinosad 17
Selamectin 15
Oclacitinib Maleate 14
Fluralaner Spot-On Solution 13
Trilostane 11
Fluralaner 13.64% 12-Week Chew 11
Imidacloprid + Moxidectin 10
Maropitant Citrate 10
Sarolaner 10
Fluralaner/Moxidectin Spot-On 10
Emodepside + Praziquantel 9
Robenacoxib 9
Frunevetmab 9
Ivermectin + Pyrantel As Pamoate Salt 8
Isoflurane 8
Fluralaner Chew Tablets 8
Ketamine 8

Irritability Reaction Insights

329 reports name Irritability; 23 recorded a death outcome (7.0% of reported events, not a population-level mortality rate). VeDDRA code: 1559.

By species: Dog (192 reports), Cat (112 reports), Horse (16 reports). By breed: Domestic Shorthair (64), Retriever - Labrador (16), Chihuahua (15).

Most co-reported drugs: Nitenpyram (22 reports), Buprenorphine (19 reports), Afoxolaner (18 reports), Milbemycin Oxime + Spinosad (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.