Reaction profile

The FDA adverse-event record for loss of voluntary movement

188 FDA adverse-event reports reference loss of voluntary movement (VeDDRA 1597). See the species, breeds, and drugs most associated with it below.

188
reports citing this reaction
23.4%
death-coded share
Dog
most-affected species
Afoxolaner
most-associated drug
Verify with FDA CVM →
188
Total Reports
44
Deaths
23.4%
Death Rate

Species Most Affected

Dog 159
Cat 20
Horse 3
Human 2
Cattle 2
Turkey 1
Goat 1

Breeds Most Affected

Retriever - Labrador 18
Retriever - Golden 13
Crossbred Canine/dog 13
Domestic Shorthair 12
Chihuahua 7
Terrier (unspecified) 5
Pug 5
Shepherd Dog - German 5
Shepherd Dog - Australian 5
Shih Tzu 5

Associated Drugs

Afoxolaner 39
Milbemycin Oxime + Spinosad 24
Bedinvetmab 19
Fluralaner 13.64% 12-Week Chew 17
Ivermectin + Pyrantel As Pamoate Salt 12
Carprofen 10
Divested Synanthic Bolus 9
Pyrantel Pamoate;Sarolaner 9
Buprenorphine 6
Sarolaner 6
Gabapentin 6
Spinosad 5
Moxidectin 5
Polysulfated Glycosaminoglycan 5
Maropitant Citrate 5
Ivermectin 4
Fluralaner Spot-On Solution 4
Prednisone 4
Frunevetmab 4
Selamectin 3

Loss of voluntary movement Reaction Insights

188 reports name Loss of voluntary movement; 44 recorded a death outcome (23.4% of reported events, not a population-level mortality rate). VeDDRA code: 1597.

By species: Dog (159 reports), Cat (20 reports), Horse (3 reports). By breed: Retriever - Labrador (18), Retriever - Golden (13), Crossbred Canine/dog (13).

Most co-reported drugs: Afoxolaner (39 reports), Milbemycin Oxime + Spinosad (24 reports), Bedinvetmab (19 reports), Fluralaner 13.64% 12-Week Chew (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.