Reaction profile

The FDA adverse-event record for mucous stool

1,632 FDA adverse-event reports reference mucous stool (VeDDRA 1080). See the species, breeds, and drugs most associated with it below.

1,632
reports citing this reaction
6.0%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
1,632
Total Reports
98
Deaths
6.0%
Death Rate

Species Most Affected

Dog 1,544
Cat 77
Horse 3
Cattle 2
Chicken 1
Sheep 1
Alpaca 1
Goat 1
Ferret 1
Human 1

Breeds Most Affected

Crossbred Canine/dog 124
Retriever - Labrador 118
Retriever - Golden 81
Chihuahua 77
Terrier - Yorkshire 74
Shih Tzu 62
Beagle 61
Maltese 51
Shepherd Dog - German 42
Domestic Shorthair 39

Associated Drugs

Milbemycin Oxime + Spinosad 183
Ivermectin + Pyrantel As Pamoate Salt 132
Fluralaner Chew Tablets 103
Milbemycin Oxime + Praziquantel 87
Maropitant Citrate 80
Grapiprant 73
Carprofen 71
Afoxolaner 68
Moxidectin 50
Pyrantel Pamoate;Sarolaner 48
Imidacloprid + Moxidectin 47
Oclacitinib Maleate 45
Metronidazole 41
Spinosad 40
Lotilaner 39
Trilostane 36
Fluralaner 13.64% 12-Week Chew 34
Cyclosporine 33
Febantel + Praziquantel + Pyrantel Pamoate 33
Milbemycin Oxime, Lufenuron 33

Mucous stool Reaction Insights

1,632 reports name Mucous stool; 98 recorded a death outcome (6.0% of reported events, not a population-level mortality rate). VeDDRA code: 1080.

By species: Dog (1,544 reports), Cat (77 reports), Horse (3 reports). By breed: Crossbred Canine/dog (124), Retriever - Labrador (118), Retriever - Golden (81).

Most co-reported drugs: Milbemycin Oxime + Spinosad (183 reports), Ivermectin + Pyrantel As Pamoate Salt (132 reports), Fluralaner Chew Tablets (103 reports), Milbemycin Oxime + Praziquantel (87 reports).

Read these counts as reporting volume, not risk: per our methodology, co-reporting reflects temporal association captured in voluntary submissions, not proof that a drug caused this reaction. A widely-prescribed drug will rack up more raw co-reports at an identical true rate than a rarely-used one, so compare within similar-exposure products.

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

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.