Drug profile

The FDA adverse-event record for Amoxicillin

1,291 FDA reports name Amoxicillin, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#153 of 2,679
by report volume (all drugs)
1,291
adverse-event reports
21.3%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Amoxicillin ranks #153 of 2679 by total reports (1,291) and #218 of 1130 by death-coded share (21.3%). National dual: Milbemycin Oxime + Spinosad is #1 of 2679 drugs by total adverse-event reports (149,624) at death-coded-share rank 965 of 1130 drugs with at least 50 reports (2.3%); separately, Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) is #1 highest death-coded share at 97.8% (report rank #821).

149,624
Milbemycin Oxime + Spinosad reports (#1)
97.8%
Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) death share (#1)
#153
This drug, reports of 2679
#218
This drug, death share of 1130

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Amoxicillin has 1,291 reports now versus 1,280 in that prior snapshot: 11 more (0.9%).

Report change
+11
Death-coded reports
+3
Death-coded share
+0.1 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Amoxicillin changes

Signature read: death-coded report count at 275 is the most distinctive stamp on Amoxicillin's FDA AER row.

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
1,291
Total Reports
275
Deaths Reported
21.3%
Death-coded share of reports

Active Ingredients

Amoxicillin

Administration Routes

OralUnknownSubcutaneousTopicalIntravenousRespiratory (Inhalation)Auricular (Otic)Parenteral

Species Affected

Dog 969
Cat 261
Unknown 46
Human 6
Pig 5
Other Birds 1
Other Canids 1
Monkey 1
Ferret 1

Most Affected Breeds

Retriever - Labrador 166
Domestic Shorthair 152
Unknown 54
Crossbred Canine/dog 40
Retriever - Golden 40
Boxer (German Boxer) 39
Shepherd Dog - German 37
Chihuahua 32
Shih Tzu 28
Terrier - Yorkshire 26

Most Reported Reactions

Vomiting 291
Lethargy (see also Central nervous system depression in 'Neurological') 252
Other abnormal test result NOS 172
Anorexia 171
Diarrhoea 161
Death by euthanasia 147
Elevated alanine aminotransferase (ALT) 143
Weight loss 128
Death 127
Elevated serum alkaline phosphatase (SAP) 108
Emesis 91
Elevated total bilirubin 87

Outcome Breakdown

Ongoing
370 (30.2%)
Outcome Unknown
302 (24.6%)
Recovered/Normal
253 (20.6%)
Euthanized
149 (12.1%)
Died
130 (10.6%)
Recovered with Sequela
23 (1.9%)

Amoxicillin: high death-coded share in the FDA AER row

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.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Amoxicillin, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (21.3% here), distinct from the volume row.

What to do with this drug

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Amoxicillin (#153 of 2,679 by report volume); death-coded 21.3%. PlainBreed drug row · death-coded report count stamp 275 · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →