Reaction profile

The FDA adverse-event record for hypersensitivity to pain

50 FDA adverse-event reports reference hypersensitivity to pain (VeDDRA 703). See the species, breeds, and drugs most associated with it below.

50
reports citing this reaction
6.0%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
50
Total Reports
3
Deaths
6.0%
Death Rate

Species Most Affected

Dog 40
Cat 8
Horse 2

Breeds Most Affected

Shepherd Dog - Australian 3
Chihuahua 3
Crossbred Canine/dog 3
Retriever - Labrador 3
Dachshund (unspecified) 2
Terrier (unspecified) 2
Spitz - German Pomeranian 2
Boxer (German Boxer) 2
Schnauzer - Miniature 2
Pit Bull 2

Associated Drugs

Milbemycin Oxime + Spinosad 13
Buprenorphine 5
Carprofen 5
Afoxolaner 5
Polysulfated Glycosaminoglycan 5
Gabapentin 5
Robenacoxib 3
Famotidine 3
Ivermectin + Pyrantel As Pamoate Salt 3
Fluralaner Chew Tablets 3
Sarolaner 3
Enrofloxacin 2
Spinosad 2
Fipronil 9.8%/S-Methoprene 8.8%/Cyphenothrin 5.2% Squeeze-On 2
Fluralaner Spot-On Solution 2
Cefovecin 2
Prednisone 2
Diphenhydramine 2
Frunevetmab 2
Cefovecin Sodium 1

Hypersensitivity to pain Reaction Insights

50 reports name Hypersensitivity to pain; 3 recorded a death outcome (6.0% of reported events, not a population-level mortality rate). VeDDRA code: 703.

By species: Dog (40 reports), Cat (8 reports), Horse (2 reports). By breed: Shepherd Dog - Australian (3), Chihuahua (3), Crossbred Canine/dog (3).

Most co-reported drugs: Milbemycin Oxime + Spinosad (13 reports), Buprenorphine (5 reports), Carprofen (5 reports), Afoxolaner (5 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.