Reaction profile

The FDA adverse-event record for muscle shaking

721 FDA adverse-event reports reference muscle shaking (VeDDRA 1745). See the species, breeds, and drugs most associated with it below.

721
reports citing this reaction
7.5%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
721
Total Reports
54
Deaths
7.5%
Death Rate

Species Most Affected

Dog 665
Cat 27
Horse 13
Cattle 7
Human 4
Pig 3
Goat 1
Sheep 1

Breeds Most Affected

Crossbred Canine/dog 90
Retriever - Labrador 45
Terrier - Yorkshire 41
Chihuahua 36
Shih Tzu 27
Maltese 23
Boxer (German Boxer) 17
Schnauzer - Miniature 15
Retriever - Golden 15
Terrier (unspecified) 15

Associated Drugs

Milbemycin Oxime + Spinosad 182
Fluralaner Chew Tablets 125
Fluralaner 13.64% 12-Week Chew 52
Pyrantel Pamoate;Sarolaner 49
Spinosad 36
Sarolaner 34
Trilostane 31
Afoxolaner 28
Bedinvetmab 17
Moxidectin 16
Ivermectin + Pyrantel As Pamoate Salt 15
Ivermectin + Pyrantel 14
Oclacitinib Maleate 13
Carprofen 12
Milbemycin Oxime + Praziquantel 11
Lotilaner 11
Nitenpyram 10
Imidacloprid + Moxidectin 10
Selamectin 9
Prednisone 9

Muscle shaking Reaction Insights

721 reports name Muscle shaking; 54 recorded a death outcome (7.5% of reported events, not a population-level mortality rate). VeDDRA code: 1745.

By species: Dog (665 reports), Cat (27 reports), Horse (13 reports). By breed: Crossbred Canine/dog (90), Retriever - Labrador (45), Terrier - Yorkshire (41).

Most co-reported drugs: Milbemycin Oxime + Spinosad (182 reports), Fluralaner Chew Tablets (125 reports), Fluralaner 13.64% 12-Week Chew (52 reports), Pyrantel Pamoate;Sarolaner (49 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.