Reaction profile

The FDA adverse-event record for itching

10,357 FDA adverse-event reports reference itching (VeDDRA 958). See the species, breeds, and drugs most associated with it below.

10,357
reports citing this reaction
0.7%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
10,357
Total Reports
76
Deaths
0.7%
Death Rate

Species Most Affected

Dog 8,815
Cat 1,285
Cattle 111
Human 103
Horse 32
Unknown 4
Ferret 3
Other Canids 2
Rabbit 1
Donkey 1

Breeds Most Affected

Retriever - Labrador 796
Domestic Shorthair 716
Crossbred Canine/dog 575
Dog (unknown) 550
Chihuahua 518
Shepherd Dog - German 434
Shih Tzu 386
Terrier - Yorkshire 368
Retriever - Golden 348
Pit Bull 201

Associated Drugs

Milbemycin Oxime + Spinosad 2,373
Afoxolaner 1,722
Spinosad 1,143
Nitenpyram 754
Ivermectin + Pyrantel As Pamoate Salt 477
Pyrantel Pamoate;Sarolaner 447
Moxidectin 304
Milbemycin Oxime + Praziquantel 271
Lotilaner 267
Fluralaner 13.64% 12-Week Chew 252
Fluralaner Chew Tablets 247
Selamectin 234
Oclacitinib Maleate 214
Frunevetmab 209
Sarolaner 184
Fluralaner Spot-On Solution 131
Selamectin;Sarolaner 128
Ivermectin 107
Diphenhydramine 102
Bedinvetmab 99

Itching Reaction Insights

10,357 reports name Itching; 76 recorded a death outcome (0.7% of reported events, not a population-level mortality rate). VeDDRA code: 958.

By species: Dog (8,815 reports), Cat (1,285 reports), Cattle (111 reports). By breed: Retriever - Labrador (796), Domestic Shorthair (716), Crossbred Canine/dog (575).

Most co-reported drugs: Milbemycin Oxime + Spinosad (2,373 reports), Afoxolaner (1,722 reports), Spinosad (1,143 reports), Nitenpyram (754 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.