Drug profile

The FDA adverse-event record for Fish Oil

1,161 FDA reports name Fish Oil, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#161 of 2,679
by report volume (all drugs)
1,161
adverse-event reports
8.4%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Fish Oil ranks #161 of 2679 by total reports (1,161) and #625 of 1130 by death-coded share (8.4%). National dual: Milbemycin Oxime + Spinosad is #1 of 2679 drugs by total adverse-event reports (149,624) at death-coded-share rank 965 of 1130 drugs with at least 50 reports (2.3%); separately, Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) is #1 highest death-coded share at 97.8% (report rank #821).

149,624
Milbemycin Oxime + Spinosad reports (#1)
97.8%
Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) death share (#1)
#161
This drug, reports of 2679
#625
This drug, death share of 1130

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Fish Oil has 1,161 reports now versus 1,145 in that prior snapshot: 16 more (1.4%).

Report change
+16
Death-coded reports
+1
Death-coded share
−0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Fish Oil changes

Signature read: 1,161 reports place Fish Oil in the upper third of FDA AER volume (#161 of 2,679).

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
1,161
Total Reports
97
Deaths Reported
8.4%
Death-coded share of reports

Active Ingredients

Fish Oil

Administration Routes

OralUnknownTopicalOphthalmic

Species Affected

Dog 1,122
Cat 27
Human 11
Cattle 1

Most Affected Breeds

Retriever - Labrador 205
Retriever - Golden 71
Shepherd Dog - German 56
Crossbred Canine/dog 55
Pit Bull 32
Shepherd Dog - Australian 26
Beagle 25
Boxer (German Boxer) 24
Chihuahua 23
Terrier - Yorkshire 21

Most Reported Reactions

Vomiting 210
Lethargy (see also Central nervous system depression in 'Neurological') 151
Emesis 146
Diarrhoea 118
Lack of efficacy - NOS 100
Other abnormal test result NOS 77
Behavioural disorder NOS 64
Death by euthanasia 63
Decreased appetite 62
Anorexia 61
Elevated alanine aminotransferase (ALT) 55
Lethargy (see also Central nervous system depression in Neurological) 53

Outcome Breakdown

Recovered/Normal
379 (32.6%)
Ongoing
339 (29.2%)
Outcome Unknown
295 (25.4%)
Euthanized
62 (5.3%)
Recovered with Sequela
51 (4.4%)
Died
35 (3.0%)

Fish Oil: high report volume in the FDA AER row

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.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Fish Oil, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (1,161 here).

Similar death-coded share

Nearest other drugs by death-coded share (8.4% here), distinct from the volume row.

What to do with this drug

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

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

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Fish Oil (#161 of 2,679 by report volume); death-coded 8.4%. PlainBreed drug row · report volume stamp 1,161 · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →