Drug profile

The FDA adverse-event record for Gabapentin

10,272 FDA reports name Gabapentin, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#24 of 2,679
by report volume (all drugs)
10,272
adverse-event reports
16.5%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Gabapentin ranks #24 of 2679 by total reports (10,272) and #324 of 1130 by death-coded share (16.5%). 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)
#24
This drug, reports of 2679
#324
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. Gabapentin has 10,272 reports now versus 9,826 in that prior snapshot: 446 more (4.5%).

Report change
+446
Death-coded reports
+81
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 Gabapentin changes

Signature read: death-coded report count at 1,690 is the most distinctive stamp on Gabapentin'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.
10,272
Total Reports
1,690
Deaths Reported
16.5%
Death-coded share of reports

Active Ingredients

Gabapentin

Administration Routes

UnknownOralSubcutaneousParenteralTopicalOtherTransdermalOphthalmicIntradermalLaryngeal

Species Affected

Dog 8,452
Cat 1,788
Human 17
Unknown 4
Horse 3
Pig 2
Goat 2
Ferret 2
Other 1
Other Birds 1

Most Affected Breeds

Retriever - Labrador 1,427
Domestic Shorthair 1,158
Crossbred Canine/dog 470
Shepherd Dog - German 467
Retriever - Golden 382
Terrier - Bull - American Pit 317
Chihuahua 263
Boxer (German Boxer) 223
Beagle 199
Dog (unknown) 194

Most Reported Reactions

Vomiting 1,568
Diarrhoea 1,158
Death by euthanasia 1,141
Lethargy (see also Central nervous system depression in Neurological) 1,084
Not eating 902
Lack of efficacy - NOS 860
Decreased appetite 676
Elevated alanine aminotransferase (ALT) 666
Lethargy (see also Central nervous system depression in 'Neurological') 635
Ataxia 623
Anorexia 605
Seizure NOS 568

Outcome Breakdown

Ongoing
4,489 (43.7%)
Outcome Unknown
2,272 (22.1%)
Recovered/Normal
1,782 (17.3%)
Euthanized
1,138 (11.1%)
Died
557 (5.4%)
Recovered with Sequela
37 (0.4%)

Gabapentin: high report volume 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 Gabapentin, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (10,272 here).

Similar death-coded share

Nearest other drugs by death-coded share (16.5% 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 Gabapentin (#24 of 2,679 by report volume); death-coded 16.5%. PlainBreed drug row · death-coded report count stamp 1,690 · 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 →