Drug profile

The FDA adverse-event record for Fish Oil

1,123 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Fish Oil. See the species affected, top reactions, and outcomes below.

1,123
adverse-event reports
8.2%
death-coded share
Dog
most-reported species
206
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.
1,123
Total Reports
92
Deaths Reported
8.2%
Death Rate

Active Ingredients

Fish Oil

Administration Routes

OralUnknownOphthalmicTopical

Species Affected

Dog 1,086
Cat 25
Human 11
Cattle 1

Most Affected Breeds

Retriever - Labrador 193
Retriever - Golden 67
Crossbred Canine/dog 55
Shepherd Dog - German 52
Pit Bull 30
Shepherd Dog - Australian 26
Beagle 25
Boxer (German Boxer) 24
Chihuahua 23
Terrier - Yorkshire 21

Most Reported Reactions

Vomiting 206
Lethargy (see also Central nervous system depression in 'Neurological') 151
Emesis 146
Diarrhoea 113
Lack of efficacy - NOS 96
Other abnormal test result NOS 76
Behavioural disorder NOS 64
Anorexia 60
Death by euthanasia 60
Decreased appetite 60
Elevated alanine aminotransferase (ALT) 52
Panting 49

Outcome Breakdown

Recovered/Normal
370 (32.9%)
Ongoing
323 (28.8%)
Outcome Unknown
288 (25.6%)
Euthanized
59 (5.3%)
Recovered with Sequela
50 (4.5%)
Died
33 (2.9%)

Fish Oil Adverse Event Insights

1,123 reports name Fish Oil; 92 recorded a death outcome (8.2% of reported events, not a population-level mortality rate). Active ingredient: Fish Oil. Administration routes: Oral, Unknown, Ophthalmic, Topical.

By species: Dog (1,086 reports), Cat (25 reports), Human (11 reports). By breed: Retriever - Labrador (193), Retriever - Golden (67), Crossbred Canine/dog (55).

Leading clinical signs: Vomiting (206), Lethargy (see also Central nervous system depression in 'Neurological') (151), Emesis (146), Diarrhoea (113). Outcome, 1,123 coded reports: Recovered/Normal leads at 32.9%.

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.