Drug profile

The FDA adverse-event record for Fluoxetine Hydrochloride

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

496
adverse-event reports
3.0%
death-coded share
Dog
most-reported species
114
Lack of efficacy - NOS - 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.
496
Total Reports
15
Deaths Reported
3.0%
Death Rate

Active Ingredients

Fluoxetine Hydrochloride

Administration Routes

OralUnknownIntraocular

Species Affected

Dog 421
Unknown 40
Cat 35

Most Affected Breeds

Unknown 40
Retriever - Labrador 28
Crossbred Canine/dog 23
Shepherd Dog - German 20
Domestic Shorthair 18
Shih Tzu 18
Dog (unknown) 17
Dog (other) 16
Terrier - Yorkshire 16
Chihuahua 15

Most Reported Reactions

Lack of efficacy - NOS 114
Vomiting 55
Behavioural disorder NOS 48
Decreased appetite 47
Lethargy (see also Central nervous system depression in Neurological) 40
Tablets, Abnormal 37
Anxiety 37
Seizure NOS 30
Anorexia 30
Diarrhoea 28
Emesis 24
Panting 24

Outcome Breakdown

Outcome Unknown
149 (32.7%)
Recovered/Normal
147 (32.2%)
Recovered with Sequela
84 (18.4%)
Ongoing
61 (13.4%)
Euthanized
9 (2.0%)
Died
6 (1.3%)

Fluoxetine Hydrochloride Adverse Event Insights

496 reports name Fluoxetine Hydrochloride; 15 recorded a death outcome (3.0% of reported events, not a population-level mortality rate). Active ingredient: Fluoxetine Hydrochloride. Administration routes: Oral, Unknown, Intraocular.

By species: Dog (421 reports), Unknown (40 reports), Cat (35 reports). By breed: Unknown (40), Retriever - Labrador (28), Crossbred Canine/dog (23).

Leading clinical signs: Lack of efficacy - NOS (114), Vomiting (55), Behavioural disorder NOS (48), Decreased appetite (47). Outcome, 456 coded reports: Outcome Unknown leads at 32.7%.

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.