Reaction profile

The FDA adverse-event record for torticollis

85 FDA adverse-event reports reference torticollis (VeDDRA 594). See the species, breeds, and drugs most associated with it below.

85
reports citing this reaction
30.6%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
85
Total Reports
26
Deaths
30.6%
Death Rate

Species Most Affected

Dog 72
Cat 10
Cattle 2
Chicken 1

Breeds Most Affected

Chihuahua 10
Dog (unknown) 7
Retriever - Labrador 7
Terrier - Yorkshire 6
Domestic Shorthair 4
Maltese 3
Retriever - Golden 3
Crossbred Canine/dog 3
Terrier - Boston 3
Domestic (unspecified) 2

Associated Drugs

Milbemycin Oxime + Spinosad 18
Maropitant Citrate 8
Spinosad 7
Trilostane 6
Bedinvetmab 6
Selamectin 4
Meloxicam 4
Butorphanol 4
Sarolaner 4
Pyrantel Pamoate;Sarolaner 4
Milbemycin Oxime 3
Carprofen 3
Tramadol 3
Milbemycin Oxime + Praziquantel 3
Doxycycline 3
Fluralaner 13.64% 12-Week Chew 3
Cefovecin Sodium 2
Diphenhydramine 2
Flea Product (Unknown) 2
Cefovecin 2

Torticollis Reaction Insights

85 reports name Torticollis; 26 recorded a death outcome (30.6% of reported events, not a population-level mortality rate). VeDDRA code: 594.

By species: Dog (72 reports), Cat (10 reports), Cattle (2 reports). By breed: Chihuahua (10), Dog (unknown) (7), Retriever - Labrador (7).

Most co-reported drugs: Milbemycin Oxime + Spinosad (18 reports), Maropitant Citrate (8 reports), Spinosad (7 reports), Trilostane (6 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.