Reaction profile

The FDA adverse-event record for irregular breathing

326 FDA adverse-event reports reference irregular breathing (VeDDRA 838). Plate codes and volume neighbourhood below; species, breeds, and drugs follow.

#837 of 2,481
by report volume (all reactions)
326
reports citing this reaction
26.7%
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. Irregular breathing has 326 reports now versus 323 in that prior snapshot: 3 more (0.9%).

Report change
+3
Death-coded reports
+1
Death-coded share
+0.1 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 Irregular breathing changes

FDA AER · VeDDRA plate

Code 838 VOL-LOW

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

  • VOL-LOW 326 reports
  • DEATH-HOT 26.7%
  • MID-PACK #837/2481
  • PHOTO-FINISH MICROORGANISMS, URINE
  • SPECIES-DOG Dog · 246
  • DRUG-LEAD Milbemycin Oxime… · 53
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: MICROORGANISMS, URINE (±1 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.

Report-volume neighbourhood around Irregular breathing

Highest and lowest poles plus nearest volume peers, not a full 2,500-reaction corpus board reprint.

Vomiting · highest174348Hepatic disorder NOS · near329Ear canal erythema · near328Irregular breathing · this r…326MICROORGANISMS, URINE · near325Deafness NOS · near324Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Irregular breathing

Irregular breathing: high death-coded share in the FDA AER plate

Signature read: 87 death-coded reports is a heavy tail count for Irregular breathing in the CVM extract. Report volume sits in the middle third of the reaction corpus. Death-coded share is upper-third: 87 of 326 reports (26.7% of named reports). Nearest volume peer: MICROORGANISMS, URINE (±1 reports). Lead species Dog (246). Lead co-reported drug Milbemycin Oxime + Spinosad (53).

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 246
Cat 64
Horse 8
Cattle 3
Human 3
Rabbit 1
Other Rodents 1

Breeds Most Affected

Domestic Shorthair 35
Retriever - Labrador 21
Chihuahua 18
Crossbred Canine/dog 11
Shih Tzu 10
Beagle 9
Pit Bull 8
Dog (unknown) 8
Bulldog - French 8
Terrier (unspecified) 7

Associated Drugs

Milbemycin Oxime + Spinosad 53
Spinosad 20
Afoxolaner 20
Selamectin 15
Maropitant Citrate 13
Ivermectin + Pyrantel As Pamoate Salt 12
Dexmedetomidine Hydrochloride 11
Moxidectin 11
Cefovecin 11
Pyrantel Pamoate;Sarolaner 10
Melarsomine Dihydrochloride Injection 9
Carprofen 8
Oclacitinib Maleate 8
Butorphanol 8
Isoflurane 7
Meloxicam 7
Trilostane 7
Ketamine Hydrochloride 6
Milbemycin Oxime + Praziquantel 6
Lotilaner 6

Nationwide reactions with similar profiles

Two openFDA-derived peer sets for Irregular breathing, both floored at ≥50 reports so the neighborhoods stay in the advertised mass (the volume chart above is the unfloored photo-finish strip).

Similar report volume

Nearest other reactions by FDA report count (326 here).

Similar death-coded share

Nearest other reactions by death-coded share (26.7% here), distinct from the volume row.

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 Irregular breathing (#837 of 2,481 by report volume); death-coded 26.7%. PlainBreed reaction plate · death-coded report count stamp 87 · 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 →