Reaction profile

The FDA adverse-event record for hypoadrenocorticism

767 FDA adverse-event reports reference hypoadrenocorticism (VeDDRA 383). See the species, breeds, and drugs most associated with it below.

767
reports citing this reaction
7.2%
death-coded share
Dog
most-affected species
Trilostane
most-associated drug
Verify with FDA CVM →
767
Total Reports
55
Deaths
7.2%
Death Rate

Species Most Affected

Dog 765
Human 1
Cat 1

Breeds Most Affected

Retriever - Labrador 72
Terrier - Boston 44
Crossbred Canine/dog 40
Maltese 36
Boxer (German Boxer) 35
Spaniel (unspecified) 27
Shih Tzu 24
American Pit Bull Terrier 24
Dog (unknown) 21
Chihuahua 21

Associated Drugs

Trilostane 1,089
Carprofen 32
Milbemycin Oxime + Spinosad 19
Levothyroxine 19
Oclacitinib Maleate 19
Gabapentin 16
Insulin 14
Ursodiol 11
Prednisone 10
Grapiprant 10
Amlodipine 9
Metronidazole 8
Maropitant Citrate 8
Compounded Trilostane 7
Polysulfated Glycosaminoglycan 7
Pimobendan 7
Cyclosporine 6
Benazapril 6
Mitotane 6
Benazepril 6

Hypoadrenocorticism Reaction Insights

767 reports name Hypoadrenocorticism; 55 recorded a death outcome (7.2% of reported events, not a population-level mortality rate). VeDDRA code: 383.

By species: Dog (765 reports), Human (1 reports), Cat (1 reports). By breed: Retriever - Labrador (72), Terrier - Boston (44), Crossbred Canine/dog (40).

Most co-reported drugs: Trilostane (1,089 reports), Carprofen (32 reports), Milbemycin Oxime + Spinosad (19 reports), Levothyroxine (19 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.