Drug profile

The FDA adverse-event record for Tiletamine Hydrochloride + Zolazepam Hydrochloride

21 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Tiletamine Hydrochloride + Zolazepam Hydrochloride. See the species affected, top reactions, and outcomes below.

21
adverse-event reports
57.1%
death-coded share
Dog
most-reported species
8
Death - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
21
Total Reports
12
Deaths Reported
57.1%
Death Rate

Active Ingredients

Tiletamine HydrochlorideZolazepam Hydrochloride

Administration Routes

IntramuscularIntravenousUnknownSubcutaneous

Species Affected

Dog 10
Cat 10
Deer 1

Most Affected Breeds

Unknown 11
Domestic Shorthair 2
Retriever - Labrador 1
Boxer (German Boxer) 1
Cat (other) 1
Deer (other) 1
Spitz - American Eskimo Dog 1
Terrier - Toy Fox 1
Shepherd Dog - German 1
Siberian Husky 1

Most Reported Reactions

Death 8
Partial lack of efficacy 6
Lack of efficacy - NOS 4
Death by euthanasia 4
Cyanosis 2
Cardiac arrest 2
Unresponsive to stimuli 2
Shaking 2
Recovery prolonged 1
Drug administration error 1
Contamination, Particulate Matter 1
Head tremor 1

Outcome Breakdown

Recovered/Normal
8 (38.1%)
Died
8 (38.1%)
Euthanized
4 (19.0%)
Outcome Unknown
1 (4.8%)

Tiletamine Hydrochloride + Zolazepam Hydrochloride Adverse Event Insights

21 reports name Tiletamine Hydrochloride + Zolazepam Hydrochloride; 12 recorded a death outcome (57.1% of reported events, not a population-level mortality rate). Active ingredients: Tiletamine Hydrochloride, Zolazepam Hydrochloride. Administration routes: Intramuscular, Intravenous, Unknown, Subcutaneous.

By species: Dog (10 reports), Cat (10 reports), Deer (1 reports). By breed: Unknown (11), Domestic Shorthair (2), Retriever - Labrador (1).

Leading clinical signs: Death (8), Partial lack of efficacy (6), Lack of efficacy - NOS (4), Death by euthanasia (4). Outcome, 21 coded reports: Recovered/Normal leads at 38.1%.

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.

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

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.