Drug profile

The FDA adverse-event record for Diazepam

954 FDA reports name Diazepam, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#190 of 2,679
by report volume (all drugs)
954
adverse-event reports
26.6%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Diazepam ranks #190 of 2679 by total reports (954) and #152 of 1130 by death-coded share (26.6%). 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)
#190
This drug, reports of 2679
#152
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. Diazepam has 954 reports now versus 943 in that prior snapshot: 11 more (1.2%).

Report change
+11
Death-coded reports
+0
Death-coded share
−0.3 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 Diazepam changes

Signature read: death-coded report count at 254 is the most distinctive stamp on Diazepam'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.
954
Total Reports
254
Deaths Reported
26.6%
Death-coded share of reports

Active Ingredients

Diazepam

Administration Routes

UnknownIntravenousOralParenteralRectalIntramuscularOtherSubcutaneous

Species Affected

Dog 670
Cat 257
Horse 15
Human 6
Rabbit 1
Ferret 1
Unknown 1
Other Mammals 1
Donkey 1
Monkey 1

Most Affected Breeds

Domestic Shorthair 176
Retriever - Labrador 68
Chihuahua 40
Crossbred Canine/dog 30
Shih Tzu 29
Terrier - Yorkshire 28
Terrier - Bull - American Pit 25
Retriever - Golden 25
Dog (unknown) 25
Shepherd Dog - German 19

Most Reported Reactions

Seizure NOS 245
Lethargy (see also Central nervous system depression in 'Neurological') 131
Death 125
Death by euthanasia 125
Vomiting 123
Other abnormal test result NOS 112
Anorexia 88
Ataxia 87
Behavioural disorder NOS 80
Vocalisation 75
Elevated alanine aminotransferase (ALT) 63
Lack of efficacy - NOS 59

Outcome Breakdown

Recovered/Normal
286 (29.8%)
Ongoing
260 (27.1%)
Outcome Unknown
142 (14.8%)
Died
130 (13.6%)
Euthanized
124 (12.9%)
Recovered with Sequela
17 (1.8%)

Diazepam: 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 Diazepam, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (26.6% 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 Diazepam (#190 of 2,679 by report volume); death-coded 26.6%. PlainBreed drug row · death-coded report count stamp 254 · 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 →