Reaction profile

The FDA adverse-event record for thyroidititis

12 FDA adverse-event reports reference thyroidititis (VeDDRA 1839). See the species, breeds, and drugs most associated with it below.

12
reports citing this reaction
75.0%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
12
Total Reports
9
Deaths
75.0%
Death Rate

Species Most Affected

Dog 10
Tiger 1
Human 1

Breeds Most Affected

Boxer (German Boxer) 4
Retriever - Golden 2
Unknown 2
Crossbred Canine/dog 1
Schnauzer - Giant 1
Dog (other) 1
Deutsche Dogge, Great Dane 1

Associated Drugs

Milbemycin Oxime + Spinosad 4
Milbemycin Oxime 3
Ivermectin 2
Recombinant Human Insulin 1
Carprofen 1
Tris-Edta, Otic 1
Gentamicin Sulfate, Topical 1
Deracoxib 1
Butorphanol Tartrate 1
Dexmedetomidine 1
Grapiprant 1
Zonisamide 1
Oclacitinib Maleate 1
Fluralaner Chew Tablets 1
Moxidectin 1
Mirtazapine 1
Cefovecin Sodium 1
Enrofloxacin 1
Penicillin G 1
Thiamazole 1

Thyroidititis Reaction Insights

12 reports name Thyroidititis; 9 recorded a death outcome (75.0% of reported events, not a population-level mortality rate). VeDDRA code: 1839.

By species: Dog (10 reports), Tiger (1 reports), Human (1 reports). By breed: Boxer (German Boxer) (4), Retriever - Golden (2), Unknown (2).

Most co-reported drugs: Milbemycin Oxime + Spinosad (4 reports), Milbemycin Oxime (3 reports), Ivermectin (2 reports), Recombinant Human Insulin (1 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.