Reaction profile

The FDA adverse-event record for blistering (see also application site soc)

334 FDA adverse-event reports reference blistering (see also application site soc) (VeDDRA 1347). See the species, breeds, and drugs most associated with it below.

334
reports citing this reaction
4.8%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
334
Total Reports
16
Deaths
4.8%
Death Rate

Species Most Affected

Dog 277
Human 31
Cat 18
Horse 7
Cattle 1

Breeds Most Affected

Unknown 32
Retriever - Labrador 24
Chihuahua 15
Shepherd Dog - German 14
Crossbred Canine/dog 13
Retriever - Golden 12
Pit Bull 10
Domestic Shorthair 10
Dog (unknown) 9
Dachshund (unspecified) 8

Associated Drugs

Milbemycin Oxime + Spinosad 50
Afoxolaner 29
Oclacitinib Maleate 26
Fluralaner Chew Tablets 26
Imidacloprid + Moxidectin 18
Ivermectin + Pyrantel As Pamoate Salt 16
Cefovecin 13
Anti-Il31 Mab Mcs Lot #1283563 13
Pyrantel Pamoate;Sarolaner 13
Trilostane 12
Spinosad 11
Diphenhydramine 10
Prednisone 9
Maropitant Citrate 9
Ivermectin 8
Buprenorphine 8
Milbemycin Oxime + Praziquantel 8
Sarolaner 8
Selamectin 7
Fluralaner 13.64% 12-Week Chew 7

Blistering (see also Application site SOC) Reaction Insights

334 reports name Blistering (see also Application site SOC); 16 recorded a death outcome (4.8% of reported events, not a population-level mortality rate). VeDDRA code: 1347.

By species: Dog (277 reports), Human (31 reports), Cat (18 reports). By breed: Unknown (32), Retriever - Labrador (24), Chihuahua (15).

Most co-reported drugs: Milbemycin Oxime + Spinosad (50 reports), Afoxolaner (29 reports), Oclacitinib Maleate (26 reports), Fluralaner Chew Tablets (26 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.