Reaction profile

The FDA adverse-event record for oral mass

228 FDA adverse-event reports reference oral mass (VeDDRA 2230). See the species, breeds, and drugs most associated with it below.

228
reports citing this reaction
23.2%
death-coded share
Dog
most-affected species
Oclacitinib Maleate
most-associated drug
Verify with FDA CVM →
228
Total Reports
53
Deaths
23.2%
Death Rate

Species Most Affected

Dog 194
Cat 30
Horse 2
Rabbit 1
Hedgehog 1

Breeds Most Affected

Retriever - Labrador 27
Domestic Shorthair 17
Retriever - Golden 13
Shepherd Dog - German 12
Boxer (German Boxer) 11
Crossbred Canine/dog 10
Terrier - Bull - American Pit 9
Beagle 8
Dog (unknown) 7
Chihuahua 6

Associated Drugs

Oclacitinib Maleate 95
Milbemycin Oxime + Spinosad 19
Unspecified 17
Cyclosporine 14
Bedinvetmab 14
Afoxolaner 13
Maropitant Citrate 11
Gabapentin 11
Carprofen 10
Frunevetmab 10
Clindamycin 9
Fluralaner Chew Tablets 9
Anti-Il31 Mab Mcs Lot #1283563 9
Grapiprant 9
Trilostane 8
Prednisone 7
Cefovecin 7
Cephalexin 7
Ivermectin + Pyrantel As Pamoate Salt 6
Ketoconazole 6

Oral mass Reaction Insights

228 reports name Oral mass; 53 recorded a death outcome (23.2% of reported events, not a population-level mortality rate). VeDDRA code: 2230.

By species: Dog (194 reports), Cat (30 reports), Horse (2 reports). By breed: Retriever - Labrador (27), Domestic Shorthair (17), Retriever - Golden (13).

Most co-reported drugs: Oclacitinib Maleate (95 reports), Milbemycin Oxime + Spinosad (19 reports), Unspecified (17 reports), Cyclosporine (14 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.