Reaction profile

The FDA adverse-event record for muscle degeneration

54 FDA adverse-event reports reference muscle degeneration (VeDDRA 1119). See the species, breeds, and drugs most associated with it below.

54
reports citing this reaction
44.4%
death-coded share
Dog
most-affected species
Trilostane
most-associated drug
Verify with FDA CVM →
54
Total Reports
24
Deaths
44.4%
Death Rate

Species Most Affected

Dog 36
Cat 5
Cattle 4
Horse 3
Pig 2
Rabbit 1
Pheasant 1
Sheep 1
Human 1

Breeds Most Affected

Retriever - Labrador 7
Domestic Shorthair 3
Holstein-Friesian also known as Holstein 3
Beagle 3
Bulldog 2
Quarter Horse 2
Pig (unknown) 2
Unknown 2
Rabbit (unknown) 1
Bulldog - American 1

Associated Drugs

Trilostane 9
Monensin Sodium 6
Carprofen 5
Prednisone 5
Milbemycin Oxime + Spinosad 4
Famotidine 4
Afoxolaner 4
Tramadol 3
Buprenorphine 3
Moxidectin 3
Meloxicam 3
Fluralaner Chew Tablets 3
Butorphanol 3
Enrofloxacin 2
Canine Adenovirus Type 2, Strain Manhattan, 12-13-76; Canine Distemper Virus, St 2
Methocarbamol 2
Sucralfate 2
Narasin 2
Cefovecin 2
Ciprofloxacin 2

Muscle degeneration Reaction Insights

54 reports name Muscle degeneration; 24 recorded a death outcome (44.4% of reported events, not a population-level mortality rate). VeDDRA code: 1119.

By species: Dog (36 reports), Cat (5 reports), Cattle (4 reports). By breed: Retriever - Labrador (7), Domestic Shorthair (3), Holstein-Friesian also known as Holstein (3).

Most co-reported drugs: Trilostane (9 reports), Monensin Sodium (6 reports), Carprofen (5 reports), Prednisone (5 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.