Drug profile

The FDA adverse-event record for Atipamezole

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

#194 of 2,679
by report volume (all drugs)
926
adverse-event reports
15.7%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Atipamezole ranks #194 of 2679 by total reports (926) and #346 of 1130 by death-coded share (15.7%). 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)
#194
This drug, reports of 2679
#346
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. Atipamezole has 926 reports now versus 912 in that prior snapshot: 14 more (1.5%).

Report change
+14
Death-coded reports
+1
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 Atipamezole changes

Signature read: death-coded report count at 145 is the most distinctive stamp on Atipamezole'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.
926
Total Reports
145
Deaths Reported
15.7%
Death-coded share of reports

Active Ingredients

Atipamezole

Administration Routes

IntramuscularUnknownParenteralIntravenousSubcutaneousOther

Species Affected

Dog 591
Cat 302
Unknown 24
Turtle 3
Rabbit 1
Monkey 1
Other 1
Human 1
Camel 1
Other Mammals 1

Most Affected Breeds

Domestic Shorthair 128
Retriever - Labrador 73
Domestic (unspecified) 60
Dog (unknown) 54
Cat (unknown) 42
Crossbred Canine/dog 37
Pit Bull 36
Unknown 34
Retriever - Golden 30
Boxer (German Boxer) 21

Most Reported Reactions

Lack of efficacy - NOS 127
Death 93
Injection site swelling 91
Vomiting 79
Diarrhoea 70
INEFFECTIVE, REVERSAL 62
Not eating 57
Lethargy (see also Central nervous system depression in Neurological) 56
Behavioural disorder NOS 55
Hypersalivation 53
Anorexia 49
Weight loss 43

Outcome Breakdown

Outcome Unknown
239 (34.7%)
Recovered/Normal
196 (28.4%)
Died
117 (17.0%)
Ongoing
105 (15.2%)
Euthanized
28 (4.1%)
Recovered with Sequela
4 (0.6%)

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

Similar death-coded share

Nearest other drugs by death-coded share (15.7% 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 Atipamezole (#194 of 2,679 by report volume); death-coded 15.7%. PlainBreed drug row · death-coded report count stamp 145 · 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 →