Reaction profile

The FDA adverse-event record for hyperadrenocorticism

207 FDA adverse-event reports reference hyperadrenocorticism (VeDDRA 379). See the species, breeds, and drugs most associated with it below.

207
reports citing this reaction
13.5%
death-coded share
Dog
most-affected species
Trilostane
most-associated drug
Verify with FDA CVM →
207
Total Reports
28
Deaths
13.5%
Death Rate

Species Most Affected

Dog 206
Cat 1

Breeds Most Affected

Crossbred Canine/dog 23
Retriever - Labrador 16
Maltese 11
Dog (unknown) 11
Dachshund (unspecified) 9
Chihuahua 8
Shih Tzu 8
Bichon Frise 8
Pinscher - Miniature 7
American Pit Bull Terrier 7

Associated Drugs

Trilostane 60
Carprofen 28
Insulin Injectable Vial 25
Pimobendan 21
Oclacitinib Maleate 20
Fluralaner 13.64% 12-Week Chew 12
Spinosad 11
Cyclosporine 11
Gabapentin 9
Enalapril 8
Milbemycin Oxime + Spinosad 7
Afoxolaner 7
Fluralaner Chew Tablets 7
Firocoxib 6
Grapiprant 6
Levothyroxine 6
Meloxicam 5
Tramadol 5
Cefpodoxime Proxetil 4
Ivermectin + Pyrantel As Pamoate Salt 4

Hyperadrenocorticism Reaction Insights

207 reports name Hyperadrenocorticism; 28 recorded a death outcome (13.5% of reported events, not a population-level mortality rate). VeDDRA code: 379.

By species: Dog (206 reports), Cat (1 reports). By breed: Crossbred Canine/dog (23), Retriever - Labrador (16), Maltese (11).

Most co-reported drugs: Trilostane (60 reports), Carprofen (28 reports), Insulin Injectable Vial (25 reports), Pimobendan (21 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.