Reaction profile

The FDA adverse-event record for mucous stool

1,681 FDA reports name mucous stool, a high-volume reaction in the CVM extract (VeDDRA 1080). Plate stamps and neighbourhood peers follow.

#265 of 2,481
by report volume (all reactions)
1,681
reports citing this reaction
6.1%
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. Mucous stool has 1,681 reports now versus 1,659 in that prior snapshot: 22 more (1.3%).

Report change
+22
Death-coded reports
+4
Death-coded share
+0.2 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 Mucous stool changes

FDA AER · VeDDRA plate

Code 1080 VOL-MID

VOL-MID · DEATH-PAR · UPPER-Q · PHOTO-FINISH · SPECIES-DOG · DRUG-LEAD · DESK-WIDE · BOOK-FULL

  • VOL-MID 1,681 reports
  • DEATH-PAR 6.1%
  • UPPER-Q #265/2481
  • PHOTO-FINISH Renal disorder NOS
  • SPECIES-DOG Dog · 1,586
  • DRUG-LEAD Milbemycin Oxime… · 183
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Renal disorder NOS (±3 reports)

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

High-volume neighbourhood around Mucous stool

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

Vomiting · highest174348Unresponsive to stimu… · near1696Application site lesi… · near1693Renal disorder NOS · near1684Mucous stool · this reaction1681Hypotension · near1676Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Mucous stool

Mucous stool: low death-coded share in the FDA AER plate

Signature read: 1,681 reports place Mucous stool in the upper third of FDA AER volume (#265 of 2,481). Report volume is upper-third scale: 1,681 named reports in the openFDA extract. Death-coded share is lower-third: 103 of 1,681 reports (6.1% of named reports). Nearest volume peer: Renal disorder NOS (±3 reports). Lead species Dog (1,586). Lead co-reported drug Milbemycin Oxime + Spinosad (183).

Read these counts as reporting volume, not risk: per our methodology, Lead co-reported drug Milbemycin Oxime + Spinosad 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 1,586
Cat 83
Cattle 3
Horse 3
Chicken 1
Sheep 1
Alpaca 1
Goat 1
Ferret 1
Human 1

Breeds Most Affected

Crossbred Canine/dog 126
Retriever - Labrador 123
Retriever - Golden 85
Chihuahua 78
Terrier - Yorkshire 75
Shih Tzu 64
Beagle 63
Maltese 51
Domestic Shorthair 43
Shepherd Dog - German 43

Associated Drugs

Milbemycin Oxime + Spinosad 183
Ivermectin + Pyrantel As Pamoate Salt 133
Fluralaner Chew Tablets 103
Maropitant Citrate 91
Milbemycin Oxime + Praziquantel 90
Carprofen 75
Grapiprant 75
Afoxolaner 71
Pyrantel Pamoate;Sarolaner 52
Moxidectin 51
Metronidazole 48
Imidacloprid + Moxidectin 47
Oclacitinib Maleate 47
Spinosad 40
Lotilaner 40
Trilostane 39
Fluralaner 13.64% 12-Week Chew 36
Febantel + Praziquantel + Pyrantel Pamoate 34
Gabapentin 34
Cyclosporine 33

Nationwide reactions with similar profiles

Two openFDA-derived peer sets for Mucous stool, 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 (1,681 here).

Similar death-coded share

Nearest other reactions by death-coded share (6.1% 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 Mucous stool (#265 of 2,481 by report volume); death-coded 6.1%. PlainBreed reaction plate · report volume stamp 1,681 · 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 →