Reaction profile

The FDA adverse-event record for spleen rupture

44 FDA adverse-event reports reference spleen rupture (VeDDRA 183). See the species, breeds, and drugs most associated with it below.

44
reports citing this reaction
84.1%
death-coded share
Dog
most-affected species
Milbemycin Oxime + Spinosad
most-associated drug
Verify with FDA CVM →
44
Total Reports
37
Deaths
84.1%
Death Rate

Species Most Affected

Dog 40
Cat 3
Cattle 1

Breeds Most Affected

Retriever - Labrador 6
Dog (unknown) 6
Domestic Shorthair 3
Crossbred Canine/dog 3
Shepherd Dog - German 3
Retriever - Golden 2
Holstein-Friesian also known as Holstein 1
Terrier - Jack Russell 1
Poodle - Standard 1
Schnauzer - Miniature 1

Associated Drugs

Milbemycin Oxime + Spinosad 9
Oclacitinib Maleate 8
Fluralaner Chew Tablets 6
Bedinvetmab 6
Ivermectin + Pyrantel As Pamoate Salt 5
Carprofen 4
Afoxolaner 3
Milbemycin Oxime 2
Monensin Sodium 1
Anesthetic 1
Melarsomine Dihydrochloride Injection 1
Cefovecin 1
Ivermectin + Pyrantel Pamoate 1
Multivitamin Supplement 1
Spinosad 1
Imidacloprid + Moxidectin 1
Cefpodoxime Proxetil 1
Immunotherapy 1
Fish Oil 1
Allergy 1

Spleen rupture Reaction Insights

44 reports name Spleen rupture; 37 recorded a death outcome (84.1% of reported events, not a population-level mortality rate). VeDDRA code: 183.

By species: Dog (40 reports), Cat (3 reports), Cattle (1 reports). By breed: Retriever - Labrador (6), Dog (unknown) (6), Domestic Shorthair (3).

Most co-reported drugs: Milbemycin Oxime + Spinosad (9 reports), Oclacitinib Maleate (8 reports), Fluralaner Chew Tablets (6 reports), Bedinvetmab (6 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.