Reaction profile

The FDA adverse-event record for enlarged liver

588 FDA adverse-event reports reference enlarged liver (VeDDRA 495). See the species, breeds, and drugs most associated with it below.

588
reports citing this reaction
37.4%
death-coded share
Dog
most-affected species
Trilostane
most-associated drug
Verify with FDA CVM →
588
Total Reports
220
Deaths
37.4%
Death Rate

Species Most Affected

Dog 524
Cat 50
Cattle 4
Horse 3
Pig 3
Other Birds 2
Chicken 1
Human 1

Breeds Most Affected

Retriever - Labrador 71
Domestic Shorthair 34
Crossbred Canine/dog 31
Terrier - Yorkshire 24
Beagle 20
Chihuahua 19
Retriever - Golden 19
Maltese 17
Shih Tzu 12
Terrier (unspecified) 12

Associated Drugs

Trilostane 96
Carprofen 83
Milbemycin Oxime + Spinosad 61
Maropitant Citrate 60
Bedinvetmab 45
Oclacitinib Maleate 40
Gabapentin 37
Fluralaner Chew Tablets 35
Prednisone 30
Enrofloxacin 27
Afoxolaner 26
Tramadol 24
Grapiprant 22
Cefovecin 20
Doxycycline 18
Spinosad 17
Metronidazole 17
Moxidectin 16
Buprenorphine 16
Cyclosporine 15

Enlarged liver Reaction Insights

588 reports name Enlarged liver; 220 recorded a death outcome (37.4% of reported events, not a population-level mortality rate). VeDDRA code: 495.

By species: Dog (524 reports), Cat (50 reports), Cattle (4 reports). By breed: Retriever - Labrador (71), Domestic Shorthair (34), Crossbred Canine/dog (31).

Most co-reported drugs: Trilostane (96 reports), Carprofen (83 reports), Milbemycin Oxime + Spinosad (61 reports), Maropitant Citrate (60 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.