Reaction profile

The FDA adverse-event record for congestion of mucous membrane

101 FDA adverse-event reports reference congestion of mucous membrane (VeDDRA 1002). See the species, breeds, and drugs most associated with it below.

101
reports citing this reaction
24.8%
death-coded share
Dog
most-affected species
Spinosad
most-associated drug
Verify with FDA CVM →
101
Total Reports
25
Deaths
24.8%
Death Rate

Species Most Affected

Dog 81
Cat 10
Horse 7
Human 3

Breeds Most Affected

Crossbred Canine/dog 8
Retriever - Labrador 7
Dog (unknown) 6
Boxer (German Boxer) 5
Shepherd Dog - German 5
Terrier - Yorkshire 5
Retriever - Golden 4
Unknown 4
Domestic Shorthair 4
Dog (other) 3

Associated Drugs

Spinosad 10
Melarsomine Dihydrochloride Injection 10
Moxidectin 9
Meloxicam 5
Imidacloprid + Moxidectin 4
Afoxolaner 4
Melarsomine Dihydrochloride 4
Dexmedetomidine Hydrochloride 3
Ceftiofur 3
Cyclosporine 3
Isoflurane 3
Morphine 3
Propofol 3
Deracoxib 3
Fluralaner Chew Tablets 3
Ivermectin + Pyrantel As Pamoate Salt 3
Maropitant 2
Nitenpyram 2
Melarsomine Dihydrocloride Injectable 25Mg/Ml 2
Milbemycin Oxime 2

Congestion of mucous membrane Reaction Insights

101 reports name Congestion of mucous membrane; 25 recorded a death outcome (24.8% of reported events, not a population-level mortality rate). VeDDRA code: 1002.

By species: Dog (81 reports), Cat (10 reports), Horse (7 reports). By breed: Crossbred Canine/dog (8), Retriever - Labrador (7), Dog (unknown) (6).

Most co-reported drugs: Spinosad (10 reports), Melarsomine Dihydrochloride Injection (10 reports), Moxidectin (9 reports), Meloxicam (5 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.