Reaction profile

The FDA adverse-event record for myelitis

11 FDA adverse-event reports reference myelitis (VeDDRA 1123). See the species, breeds, and drugs most associated with it below.

11
reports citing this reaction
45.5%
death-coded share
Dog
most-affected species
Gabapentin
most-associated drug
Verify with FDA CVM →
11
Total Reports
5
Deaths
45.5%
Death Rate

Species Most Affected

Dog 11

Breeds Most Affected

Bulldog - French 2
Retriever - Labrador 1
Crossbred Canine/dog 1
Dog (unknown) 1
Schnauzer - Miniature 1
Terrier - Yorkshire 1
Terrier - Bull - American Pit 1
Terrier - Bull 1
Poodle (unspecified) 1
Chihuahua 1

Associated Drugs

Gabapentin 3
Bedinvetmab 3
Prednisone 2
Glycosaminoglycan Polysulfate 1
Isoflurane Gas 1
Intravenous Fluids, Not Specified 1
Glucosamine, Msm, Creatine, Antioxidants 1
Carporfen 1
Acepromazine 1
Glycopyrrolate 1
Propofol 1
Morphine 1
Sarolaner 1
Melarsomine Dihydrochloride 1
Doxycycline 1
Tramadol 1
Levothyroxine Sodium 1
Lufenuron + Milbemycin Oxime + Praziquantel 1
Milbemycin Oxime + Praziquantel 1
Rabies Vaccine, Killed Virus 1

Myelitis Reaction Insights

11 reports name Myelitis; 5 recorded a death outcome (45.5% of reported events, not a population-level mortality rate). VeDDRA code: 1123.

By species: Dog (11 reports). By breed: Bulldog - French (2), Retriever - Labrador (1), Crossbred Canine/dog (1).

Most co-reported drugs: Gabapentin (3 reports), Bedinvetmab (3 reports), Prednisone (2 reports), Glycosaminoglycan Polysulfate (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.