Drug profile

The FDA adverse-event record for Ursodeoxycholic Acid

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

54
adverse-event reports
27.8%
death-coded share
Dog
most-reported species
12
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.
54
Total Reports
15
Deaths Reported
27.8%
Death Rate

Active Ingredients

Ursodeoxycholic Acid

Administration Routes

OralUnknown

Species Affected

Dog 49
Cat 5

Most Affected Breeds

Crossbred Canine/dog 5
Domestic Shorthair 5
Pointing Dog - Hungarian Short-haired (Vizsla) 4
Retriever - Labrador 3
Schnauzer - Miniature 3
Spitz - German Pomeranian 3
Terrier - Rat 3
Poodle - Miniature 2
Doberman Pinscher 2
Chihuahua 2

Most Reported Reactions

Diarrhoea 12
Elevated alanine aminotransferase (ALT) 12
Vomiting 11
Death by euthanasia 10
Elevated serum alkaline phosphatase (SAP) 8
Anorexia 7
Elevated gamma-glutamyl transferase (GGT) 7
Lethargy (see also Central nervous system depression in 'Neurological') 6
Other abnormal test result NOS 6
Decreased appetite 6
Behavioural disorder NOS 6
Gall bladder & bile duct disorder NOS 5

Outcome Breakdown

Outcome Unknown
15 (27.8%)
Recovered/Normal
13 (24.1%)
Ongoing
11 (20.4%)
Euthanized
10 (18.5%)
Died
5 (9.3%)

Ursodeoxycholic Acid Adverse Event Insights

54 reports name Ursodeoxycholic Acid; 15 recorded a death outcome (27.8% of reported events, not a population-level mortality rate). Active ingredient: Ursodeoxycholic Acid. Administration routes: Oral, Unknown.

By species: Dog (49 reports), Cat (5 reports). By breed: Crossbred Canine/dog (5), Domestic Shorthair (5), Pointing Dog - Hungarian Short-haired (Vizsla) (4).

Leading clinical signs: Diarrhoea (12), Elevated alanine aminotransferase (ALT) (12), Vomiting (11), Death by euthanasia (10). Outcome, 54 coded reports: Outcome Unknown leads at 27.8%.

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.