Drug profile

The FDA adverse-event record for Tiletamine, Zolazepam

273 FDA reports name Tiletamine, Zolazepam, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#449 of 2,679
by report volume (all drugs)
273
adverse-event reports
29.7%
death-coded share
Cat
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Tiletamine, Zolazepam ranks #449 of 2679 by total reports (273) and #124 of 1130 by death-coded share (29.7%). 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)
#449
This drug, reports of 2679
#124
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. Tiletamine, Zolazepam has 273 reports now versus 273 in that prior snapshot: 0 the same number of (0.0%).

Report change
+0
Death-coded reports
+0
Death-coded share
+0.0 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 Tiletamine, Zolazepam changes

Signature read: death-coded report count at 81 is the most distinctive stamp on Tiletamine, Zolazepam'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.
273
Total Reports
81
Deaths Reported
29.7%
Death-coded share of reports

Active Ingredients

Tiletamine, Zolazepam

Administration Routes

IntramuscularIntravenousUnknownSubcutaneousTopicalOtherOphthalmic

Species Affected

Cat 121
Dog 118
Unknown 25
Human 4
Other Deer 2
Other 2
Chimpanzee 1

Most Affected Breeds

Domestic (unspecified) 73
Cat (unknown) 35
Unknown 34
Dog (unknown) 32
Crossbred Canine/dog 13
Mixed (Dog) 9
Retriever - Labrador 8
Boxer (German Boxer) 5
Shepherd Dog - German 4
Pug 3

Most Reported Reactions

INEFFECTIVE, ANESTHESIA 51
Death 48
Cardiac arrest 30
Apnoea 28
Death by euthanasia 25
Fever 24
Vomiting 21
Vocalisation 20
Depression 19
Solution, Abnormal 19
Anorexia 18
Ataxia 13

Outcome Breakdown

Died
75 (83.3%)
Recovered/Normal
7 (7.8%)
Euthanized
6 (6.7%)
Outcome Unknown
1 (1.1%)
Ongoing
1 (1.1%)

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

What to do with this drug

  • Compare Tiletamine, Zolazepam's report volume and death-coded share against similar drugs nationwide. See similar drugs
  • Read how death-coded share differs from a mortality rate before drawing conclusions. Understanding adverse events
  • Browse the full drug directory to compare report counts across products. All drugs

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 Tiletamine, Zolazepam (#449 of 2,679 by report volume); death-coded 29.7%. PlainBreed drug row · death-coded report count stamp 81 · 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 →