Reaction profile

The FDA adverse-event record for faecal impaction

42 FDA reports name faecal impaction, a lower-volume reaction in the CVM extract (VeDDRA 266). Plate stamps and neighbourhood peers follow.

#1829 of 2,481
by report volume (all reactions)
42
reports citing this reaction
33.3%
death-coded share
Horse
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. Faecal impaction has 42 reports now versus 42 in that prior snapshot: 0 the same number of (0.0%).

Report change
+0
Death-coded reports
+0
Death-coded share
+0.0 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 Faecal impaction changes

FDA AER · VeDDRA plate

Code 266 VOL-TRACE

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

  • VOL-TRACE 42 reports
  • DEATH-HOT 33.3%
  • MID-PACK #1829/2481
  • PHOTO-FINISH Allergy to food
  • SPECIES-HORSE Horse · 19
  • DRUG-LEAD Milbemycin Oxime… · 6
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Allergy to food (±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 Faecal impaction

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

Vomiting · highest174348Allergy to food · near42Asystole · near42Cholecystitis · near42Cutaneous emphysema · near42Faecal impaction · this reac…42Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Faecal impaction

Faecal impaction: high death-coded share in the FDA AER plate

Signature read: Faecal impaction's 33.3% death-coded share is among the highest in the openFDA reaction corpus. Report volume is lower-third scale: 42 named reports in the openFDA extract. Death-coded share is upper-third: 14 of 42 reports (33.3% of named reports). Nearest volume peer: Allergy to food (±0 reports). Lead species Horse (19). Lead co-reported drug Milbemycin Oxime + Spinosad (6).

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

Horse 19
Dog 11
Cat 10
Pig 1
Turkey 1

Breeds Most Affected

Domestic Shorthair 6
Quarter Horse 4
Arab 3
Horse (unknown) 3
Domestic Longhair 2
Terrier - Jack Russell 2
Maltese 2
Retriever - Labrador 1
Domestic Mediumhair 1
Setter - English 1

Associated Drugs

Milbemycin Oxime + Spinosad 6
Lufenuron + Milbemycin Oxime 3
Enema 3
Pergolide Mesylate 3
Praziquantel; Moxidectin 3
Robenacoxib 3
Emodepside + Praziquantel 2
Fluralaner Chew Tablets 2
Fluralaner Spot-On Solution 2
Maropitant Citrate 2
Flunixin Meglumine Injectable 2
Yf-Wn Chimera Havl Adj Kv Gmo 2
Trimethoprim/ Sulfadimethoxine Labeled For Horses 1
Imidacloprid + Moxidectin 1
Ivermectin 1
Cephalexin 1
Levothyroxine Sodium 1
Ivermectin 1.87% Parziquantel 14.03% 1
Narasin 1
Chlortetracycline 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 Faecal impaction (#1829 of 2,481 by report volume); death-coded 33.3%. PlainBreed reaction plate · death-coded share stamp 33.3% · 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 →