Reaction profile

The FDA adverse-event record for hepatic necrosis

129 FDA adverse-event reports reference hepatic necrosis (VeDDRA 491). See the species, breeds, and drugs most associated with it below.

129
reports citing this reaction
81.4%
death-coded share
Dog
most-affected species
Carprofen
most-associated drug
Verify with FDA CVM →
129
Total Reports
105
Deaths
81.4%
Death Rate

Species Most Affected

Dog 93
Cattle 23
Cat 9
Bison 1
Horse 1
Sheep 1
Goat 1

Breeds Most Affected

Retriever - Labrador 19
Domestic Shorthair 8
Crossbred Canine/dog 6
Cattle (unknown) 5
Holstein-Friesian also known as Holstein 4
Retriever - Golden 4
Shepherd Dog - German 4
Havanese 4
Shepherd Dog - Australian 3
Dachshund (unspecified) 3

Associated Drugs

Carprofen 24
Monensin Sodium 14
Maropitant Citrate 14
Milbemycin Oxime + Spinosad 12
Fluralaner Chew Tablets 11
Famotidine 10
Gabapentin 9
Afoxolaner 9
Tramadol 7
Sam-E, Silybin, Vitamin E, Zinc 7
Oclacitinib Maleate 7
Imidacloprid + Moxidectin 6
Ivermectin + Pyrantel As Pamoate Salt 6
Rabies Vaccine 6
Bordetella Vaccine 5
Buprenorphine 5
Ampicillin 5
Ivermectin 5
Prednisone 5
Cyclosporine 5

Hepatic necrosis Reaction Insights

129 reports name Hepatic necrosis; 105 recorded a death outcome (81.4% of reported events, not a population-level mortality rate). VeDDRA code: 491.

By species: Dog (93 reports), Cattle (23 reports), Cat (9 reports). By breed: Retriever - Labrador (19), Domestic Shorthair (8), Crossbred Canine/dog (6).

Most co-reported drugs: Carprofen (24 reports), Monensin Sodium (14 reports), Maropitant Citrate (14 reports), Milbemycin Oxime + Spinosad (12 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.