Drug profile

The FDA adverse-event record for Trazodone

1,238 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Trazodone. See the species affected, top reactions, and outcomes below.

1,238
adverse-event reports
11.4%
death-coded share
Dog
most-reported species
260
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.
1,238
Total Reports
141
Deaths Reported
11.4%
Death Rate

Active Ingredients

Trazodone

Administration Routes

OralUnknownSubcutaneousIntravenousOtherOphthalmicTopical

Species Affected

Dog 1,218
Cat 14
Human 5
Other 1

Most Affected Breeds

Retriever - Labrador 175
Crossbred Canine/dog 72
Retriever - Golden 62
Shepherd Dog - German 59
Terrier - Bull - American Pit 48
Chihuahua 37
Beagle 34
Boxer (German Boxer) 31
Terrier (unspecified) 31
Siberian Husky 30

Most Reported Reactions

Vomiting 260
Diarrhoea 161
Lethargy (see also Central nervous system depression in Neurological) 115
Death by euthanasia 90
Decreased appetite 90
Not eating 86
Lethargy (see also Central nervous system depression in 'Neurological') 84
Seizure NOS 81
Panting 72
Lack of efficacy - NOS 68
Elevated alanine aminotransferase (ALT) 67
Lack of efficacy (endoparasite) - heartworm 63

Outcome Breakdown

Ongoing
488 (39.5%)
Recovered/Normal
305 (24.7%)
Outcome Unknown
297 (24.0%)
Euthanized
92 (7.4%)
Died
49 (4.0%)
Recovered with Sequela
5 (0.4%)

Trazodone Adverse Event Insights

1,238 reports name Trazodone; 141 recorded a death outcome (11.4% of reported events, not a population-level mortality rate). Active ingredient: Trazodone. Administration routes: Oral, Unknown, Subcutaneous, Intravenous.

By species: Dog (1,218 reports), Cat (14 reports), Human (5 reports). By breed: Retriever - Labrador (175), Crossbred Canine/dog (72), Retriever - Golden (62).

Leading clinical signs: Vomiting (260), Diarrhoea (161), Lethargy (see also Central nervous system depression in Neurological) (115), Death by euthanasia (90). Outcome, 1,236 coded reports: Ongoing leads at 39.5%.

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.