Drug profile

The FDA adverse-event record for Amoxicillin

1,250 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Amoxicillin. See the species affected, top reactions, and outcomes below.

1,250
adverse-event reports
21.4%
death-coded share
Dog
most-reported species
284
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.
1,250
Total Reports
268
Deaths Reported
21.4%
Death Rate

Active Ingredients

Amoxicillin

Administration Routes

OralUnknownSubcutaneousTopicalIntravenousRespiratory (Inhalation)Auricular (Otic)Parenteral

Species Affected

Dog 935
Cat 255
Unknown 45
Human 6
Pig 5
Other Birds 1
Other Canids 1
Monkey 1
Ferret 1

Most Affected Breeds

Retriever - Labrador 165
Domestic Shorthair 148
Unknown 53
Retriever - Golden 39
Boxer (German Boxer) 39
Crossbred Canine/dog 38
Shepherd Dog - German 36
Chihuahua 28
Shih Tzu 27
Terrier - Yorkshire 26

Most Reported Reactions

Vomiting 284
Lethargy (see also Central nervous system depression in 'Neurological') 252
Anorexia 169
Other abnormal test result NOS 167
Diarrhoea 154
Death by euthanasia 144
Elevated alanine aminotransferase (ALT) 134
Death 123
Weight loss 123
Elevated serum alkaline phosphatase (SAP) 108
Emesis 91
Elevated total bilirubin 85

Outcome Breakdown

Ongoing
353 (29.8%)
Outcome Unknown
289 (24.4%)
Recovered/Normal
250 (21.1%)
Euthanized
146 (12.3%)
Died
126 (10.6%)
Recovered with Sequela
22 (1.9%)

Amoxicillin Adverse Event Insights

1,250 reports name Amoxicillin; 268 recorded a death outcome (21.4% of reported events, not a population-level mortality rate). Active ingredient: Amoxicillin. Administration routes: Oral, Unknown, Subcutaneous, Topical.

By species: Dog (935 reports), Cat (255 reports), Unknown (45 reports). By breed: Retriever - Labrador (165), Domestic Shorthair (148), Unknown (53).

Leading clinical signs: Vomiting (284), Lethargy (see also Central nervous system depression in 'Neurological') (252), Anorexia (169), Other abnormal test result NOS (167). Outcome, 1,186 coded reports: Ongoing leads at 29.8%.

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.