Drug profile

The FDA adverse-event record for Trazodone Hcl

158 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Trazodone Hcl. See the species affected, top reactions, and outcomes below.

158
adverse-event reports
10.1%
death-coded share
Dog
most-reported species
43
Vomiting - 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.
158
Total Reports
16
Deaths Reported
10.1%
Death Rate

Active Ingredients

Trazodone Hcl

Administration Routes

UnknownOralOphthalmic

Species Affected

Dog 157
Cat 1

Most Affected Breeds

Retriever - Labrador 23
Terrier - Bull - American Pit 12
Shepherd Dog - German 9
Shepherd Dog - Australian 7
Retriever - Golden 6
Terrier (unspecified) 5
Boxer (German Boxer) 4
Shepherd (unspecified) 4
Deutsche Dogge, Great Dane 3
Bichon Frise 3

Most Reported Reactions

Vomiting 43
Lethargy (see also Central nervous system depression in 'Neurological') 24
Behavioural disorder NOS 16
Diarrhoea 16
Anorexia 14
Lack of efficacy - NOS 14
Other abnormal test result NOS 14
Seizure NOS 14
Tremor 10
Ataxia 10
Elevated serum alkaline phosphatase (SAP) 10
Elevated alanine aminotransferase (ALT) 9

Outcome Breakdown

Ongoing
100 (63.3%)
Recovered/Normal
33 (20.9%)
Died
11 (7.0%)
Outcome Unknown
9 (5.7%)
Euthanized
5 (3.2%)

Trazodone Hcl Adverse Event Insights

158 reports name Trazodone Hcl; 16 recorded a death outcome (10.1% of reported events, not a population-level mortality rate). Active ingredient: Trazodone Hcl. Administration routes: Unknown, Oral, Ophthalmic.

By species: Dog (157 reports), Cat (1 reports). By breed: Retriever - Labrador (23), Terrier - Bull - American Pit (12), Shepherd Dog - German (9).

Leading clinical signs: Vomiting (43), Lethargy (see also Central nervous system depression in 'Neurological') (24), Behavioural disorder NOS (16), Diarrhoea (16). Outcome, 158 coded reports: Ongoing leads at 63.3%.

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.