Drug profile

The FDA adverse-event record for Denamarin

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

386
adverse-event reports
16.6%
death-coded share
Dog
most-reported species
65
Elevated alanine aminotransferase (ALT) - 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.
386
Total Reports
64
Deaths Reported
16.6%
Death Rate

Active Ingredients

Denamarin

Administration Routes

OralUnknownSubcutaneous

Species Affected

Dog 370
Cat 16

Most Affected Breeds

Retriever - Labrador 49
Chihuahua 22
Beagle 18
Crossbred Canine/dog 16
Retriever - Golden 15
Terrier - Bull - American Pit 13
Shepherd Dog - German 11
Domestic Shorthair 11
Terrier (unspecified) 10
Sheepdog - Shetland 9

Most Reported Reactions

Elevated alanine aminotransferase (ALT) 65
Vomiting 64
Lethargy (see also Central nervous system depression in Neurological) 62
Diarrhoea 52
Death by euthanasia 45
Polydipsia 41
Polyuria 33
Elevated serum alkaline phosphatase (SAP) 32
Elevated serum alkaline phosphatase (ALP) 30
Not eating 26
Anorexia 26
Seizure NOS 26

Outcome Breakdown

Ongoing
215 (55.7%)
Outcome Unknown
70 (18.1%)
Euthanized
45 (11.7%)
Recovered/Normal
37 (9.6%)
Died
19 (4.9%)

Denamarin Adverse Event Insights

386 reports name Denamarin; 64 recorded a death outcome (16.6% of reported events, not a population-level mortality rate). Active ingredient: Denamarin. Administration routes: Oral, Unknown, Subcutaneous.

By species: Dog (370 reports), Cat (16 reports). By breed: Retriever - Labrador (49), Chihuahua (22), Beagle (18).

Leading clinical signs: Elevated alanine aminotransferase (ALT) (65), Vomiting (64), Lethargy (see also Central nervous system depression in Neurological) (62), Diarrhoea (52). Outcome, 386 coded reports: Ongoing leads at 55.7%.

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.