Reaction profile

The FDA adverse-event record for muscle necrosis

43 FDA reports name muscle necrosis, a lower-volume reaction in the CVM extract (VeDDRA 1245). Plate stamps and neighbourhood peers follow.

#1817 of 2,481
by report volume (all reactions)
43
reports citing this reaction
76.7%
death-coded share
Dog
most-affected species

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Muscle necrosis has 43 reports now versus 42 in that prior snapshot: 1 more (2.4%).

Report change
+1
Death-coded reports
+1
Death-coded share
+0.6 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Muscle necrosis changes

FDA AER · VeDDRA plate

Code 1245 VOL-TRACE

VOL-TRACE · DEATH-HOT · MID-PACK · PHOTO-FINISH · SPECIES-DOG · DRUG-LEAD · DESK-WIDE · BOOK-FULL

  • VOL-TRACE 43 reports
  • DEATH-HOT 76.7%
  • MID-PACK #1817/2481
  • PHOTO-FINISH Application site numb…
  • SPECIES-DOG Dog · 12
  • DRUG-LEAD Monensin Sodium · 8
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Application site numbness (±0 reports)

Upper-third death-coded share drives the outcome stamps on this plate; volume band, corpus rank, and co-report peers follow. Not a clinical diagnosis.

Lower-volume neighbourhood around Muscle necrosis

Lower-third volume poles plus nearest peers, not a full reaction corpus board reprint.

Vomiting · highest174348Application site numb… · near43Elevated AST · near43INEFFECTIVE, PINWORMS · near43INEFFECTIVE, STOMACH… · near43Muscle necrosis · this react…43Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Muscle necrosis

Muscle necrosis: high death-coded share in the FDA AER plate

Signature read: Muscle necrosis's 76.7% death-coded share is among the highest in the openFDA reaction corpus. Report volume is lower-third scale: 43 named reports in the openFDA extract. Death-coded share is upper-third: 33 of 43 reports (76.7% of named reports). Nearest volume peer: Application site numbness (±0 reports). Lead species Dog (12). Lead co-reported drug Monensin Sodium (8).

Read these counts as reporting volume, not risk: per our methodology, A high death-coded share in FDA filings does not prove causation; co-reporting is voluntary temporal association only. Browse the full reactions index or the about page for how PlainBreed frames FDA CVM extracts.

Species Most Affected

Dog 12
Cattle 10
Pig 9
Horse 6
Cat 4
Quail 1
Pheasant 1

Breeds Most Affected

Pig (unknown) 8
Holstein-Friesian also known as Holstein 6
Unknown 2
Quarter Horse 2
Retriever - Golden 2
Crossbred Bovine/Cattle 2
Domestic Shorthair 2
Beagle 2
Aberdeen Angus 1
Crossbred Canine/dog 1

Associated Drugs

Monensin Sodium 8
Narasin 6
Melarsomine Dihydrochloride Injection 4
Tiamulin 4
Dinoprost Tromethamine 4
Butorphanol 3
Dexmedetomidine 3
Ceftiofur Crystalline Free Acid 2
Afoxolaner 2
Melarsomine Dihydrochloride 2
Anesthetic (Unknown) 2
Ropinirole Hydrochloride 2
Atipamezole 2
Buprenorphine 2
Narasin Granulated 2
Tiamulin Hydrogen Fumarate 1
Ractopamine Hydrochloride 1
Clodronate Disodium 1
Pegbovigrastim 1
Firocoxib 57 Mg Chewable 1

What to do with this reaction

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Muscle necrosis (#1817 of 2,481 by report volume); death-coded 76.7%. PlainBreed reaction plate · death-coded share stamp 76.7% · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →