Drug profile

The FDA adverse-event record for Budesonide

174 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Budesonide. See the species affected, top reactions, and outcomes below.

174
adverse-event reports
10.9%
death-coded share
Cat
most-reported species
38
Diarrhoea - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
174
Total Reports
19
Deaths Reported
10.9%
Death Rate

Active Ingredients

Budesonide

Administration Routes

UnknownOralRespiratory (Inhalation)

Species Affected

Cat 88
Dog 84
Horse 1
Human 1

Most Affected Breeds

Domestic Shorthair 53
Retriever - Labrador 13
Shih Tzu 7
Cat (unknown) 6
Domestic Mediumhair 6
Siamese 5
Dog (unknown) 4
Domestic Longhair 4
Persian 4
Crossbred Canine/dog 3

Most Reported Reactions

Diarrhoea 38
Vomiting 33
Not eating 20
Lack of efficacy - NOS 19
Weight loss 18
Death by euthanasia 17
Lethargy (see also Central nervous system depression in 'Neurological') 15
Lethargy (see also Central nervous system depression in Neurological) 14
Decreased appetite 13
Behavioural disorder NOS 12
Elevated blood urea nitrogen (BUN) 12
Polyuria 12

Outcome Breakdown

Ongoing
73 (42.0%)
Outcome Unknown
53 (30.5%)
Recovered/Normal
28 (16.1%)
Euthanized
18 (10.3%)
Recovered with Sequela
1 (0.6%)
Died
1 (0.6%)

Budesonide Adverse Event Insights

174 reports name Budesonide; 19 recorded a death outcome (10.9% of reported events, not a population-level mortality rate). Active ingredient: Budesonide. Administration routes: Unknown, Oral, Respiratory (Inhalation).

By species: Cat (88 reports), Dog (84 reports), Horse (1 reports). By breed: Domestic Shorthair (53), Retriever - Labrador (13), Shih Tzu (7).

Leading clinical signs: Diarrhoea (38), Vomiting (33), Not eating (20), Lack of efficacy - NOS (19). Outcome, 174 coded reports: Ongoing leads at 42.0%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

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.