Drug profile

The FDA adverse-event record for Acetylsalicylic Acid

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

170
adverse-event reports
36.5%
death-coded share
Dog
most-reported species
53
Vomiting - 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.
170
Total Reports
62
Deaths Reported
36.5%
Death Rate

Active Ingredients

Acetylsalicylic Acid

Administration Routes

OralUnknown

Species Affected

Dog 155
Cat 8
Human 6
Horse 1

Most Affected Breeds

Retriever - Labrador 35
Shepherd Dog - German 8
Dachshund (unspecified) 7
Rottweiler 7
Retriever - Golden 6
Unknown 6
Domestic Shorthair 6
Shepherd Dog - Australian 5
Terrier - Yorkshire 5
Terrier - Bull - American Pit 5

Most Reported Reactions

Vomiting 53
Lethargy (see also Central nervous system depression in 'Neurological') 53
Anorexia 35
Death 31
Death by euthanasia 27
Elevated serum alkaline phosphatase (SAP) 24
Diarrhoea 24
Other abnormal test result NOS 22
Elevated alanine aminotransferase (ALT) 21
Elevated total bilirubin 21
Elevated liver enzymes 20
Anaemia NOS 16

Outcome Breakdown

Ongoing
64 (37.4%)
Died
35 (20.5%)
Euthanized
27 (15.8%)
Recovered/Normal
26 (15.2%)
Outcome Unknown
19 (11.1%)

Acetylsalicylic Acid Adverse Event Insights

170 reports name Acetylsalicylic Acid; 62 recorded a death outcome (36.5% of reported events, not a population-level mortality rate). Active ingredient: Acetylsalicylic Acid. Administration routes: Oral, Unknown.

By species: Dog (155 reports), Cat (8 reports), Human (6 reports). By breed: Retriever - Labrador (35), Shepherd Dog - German (8), Dachshund (unspecified) (7).

Leading clinical signs: Vomiting (53), Lethargy (see also Central nervous system depression in 'Neurological') (53), Anorexia (35), Death (31). Outcome, 171 coded reports: Ongoing leads at 37.4%.

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.