Reaction profile

The FDA adverse-event record for ileus

213 FDA adverse-event reports reference ileus (VeDDRA 1086). Plate codes and volume neighbourhood below; species, breeds, and drugs follow.

#996 of 2,481
by report volume (all reactions)
213
reports citing this reaction
21.1%
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. Ileus has 213 reports now versus 203 in that prior snapshot: 10 more (4.9%).

Report change
+10
Death-coded reports
+0
Death-coded share
−1.0 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 Ileus changes

FDA AER · VeDDRA plate

Code 1086 VOL-LOW

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

  • VOL-LOW 213 reports
  • DEATH-HOT 21.1%
  • MID-PACK #996/2481
  • PHOTO-FINISH Drug dose prescribing…
  • SPECIES-DOG Dog · 170
  • DRUG-LEAD Maropitant Citrate · 46
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Drug dose prescribing error (±0 reports)

Instrument codes from this reaction’s FDA CVM adverse-event extract: volume band, death-coded share, corpus rank, photo-finish peer, lead species, lead drug, breed desk, and book completeness. Not a clinical diagnosis.

Report-volume neighbourhood around Ileus

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

Vomiting · highest174348Drug dose prescribing… · near213Ear twitching · near213Ileus · this reaction213Injection site prurit… · near213Aspiration pneumonia · near212Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Ileus

What the FDA AER plate says about Ileus

Signature read: 45 death-coded reports is a heavy tail count for Ileus in the CVM extract. Report volume sits in the middle third of the reaction corpus. 45 of 213 reports were death-coded (21.1% of named reports, not a population mortality rate). Nearest volume peer: Drug dose prescribing error (±0 reports). Lead species Dog (170). Lead co-reported drug Maropitant Citrate (46).

Read these counts as reporting volume, not risk: per our methodology, Lead co-reported drug Maropitant Citrate appears in filings alongside this reaction; that is association, not causation. Browse the full reactions index or the about page for how PlainBreed frames FDA CVM extracts.

Species Most Affected

Dog 170
Cat 30
Horse 11
Other Rodents 1
Unknown 1

Breeds Most Affected

Retriever - Labrador 23
Domestic Shorthair 16
Crossbred Canine/dog 15
Shih Tzu 14
Quarter Horse 7
Retriever - Golden 7
Terrier - Jack Russell 7
Maltese 6
Terrier - Yorkshire 6
Dachshund - Miniature 6

Associated Drugs

Maropitant Citrate 46
Carprofen 31
Milbemycin Oxime + Spinosad 18
Metoclopramide 18
Metronidazole 17
Famotidine 16
Gabapentin 16
Ondansetron 13
Enrofloxacin 12
Buprenorphine 12
Deracoxib 11
Rabies Vaccine 11
Isoflurane 10
Sucralfate 10
Butorphanol 10
Fluralaner Chew Tablets 9
Fluid Therapy 9
Prednisone 8
Omeprazole 8
Propofol 8

Nationwide reactions with similar profiles

Two openFDA-derived peer sets for Ileus, 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 (213 here).

Similar death-coded share

Nearest other reactions by death-coded share (21.1% 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 Ileus (#996 of 2,481 by report volume); death-coded 21.1%. PlainBreed reaction plate · death-coded report count stamp 45 · 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 →