Reaction profile

The FDA adverse-event record for muscle necrosis

41 FDA adverse-event reports reference muscle necrosis (VeDDRA 1245). See the species, breeds, and drugs most associated with it below.

41
reports citing this reaction
75.6%
death-coded share
Dog
most-affected species
Monensin Sodium
most-associated drug
Verify with FDA CVM →
41
Total Reports
31
Deaths
75.6%
Death Rate

Species Most Affected

Dog 12
Cattle 9
Pig 8
Horse 6
Cat 4
Quail 1
Pheasant 1

Breeds Most Affected

Pig (unknown) 7
Holstein-Friesian also known as Holstein 6
Unknown 2
Quarter Horse 2
Retriever - Golden 2
Domestic Shorthair 2
Beagle 2
Crossbred Canine/dog 1
Aberdeen Angus 1
Deutsche Dogge, Great Dane 1

Associated Drugs

Monensin Sodium 9
Narasin 6
Melarsomine Dihydrochloride Injection 4
Dinoprost Tromethamine 4
Tiamulin 3
Butorphanol 3
Dexmedetomidine 3
Ceftiofur Crystalline Free Acid 2
Tylosin Phosphate 2
Afoxolaner 2
Melarsomine Dihydrochloride 2
Anesthetic (Unknown) 2
Ropinirole Hydrochloride 2
Atipamezole 2
Buprenorphine 2
Tiamulin Hydrogen Fumarate 1
Ractopamine Hydrochloride 1
Clodronate Disodium 1
Pegbovigrastim 1
Firocoxib 57 Mg Chewable 1

Muscle necrosis Reaction Insights

41 reports name Muscle necrosis; 31 recorded a death outcome (75.6% of reported events, not a population-level mortality rate). VeDDRA code: 1245.

By species: Dog (12 reports), Cattle (9 reports), Pig (8 reports). By breed: Pig (unknown) (7), Holstein-Friesian also known as Holstein (6), Unknown (2).

Most co-reported drugs: Monensin Sodium (9 reports), Narasin (6 reports), Melarsomine Dihydrochloride Injection (4 reports), Dinoprost Tromethamine (4 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.