Liver problems after Fish Oil in dogs

159 reports to the FDA describe liver problems in dogs given Fish Oil. That is 11% of all reports for this medicine, compared with 4.6% across reports for all dog medicines, so it is reported unusually often with this medicine.

159Reports
68%Marked serious
12%Recovered
21%Died or euthanised
36 daysTypical onset
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How soon it started

Same day
8 7.8%
1–2 days
9 8.7%
3–7 days
10 9.7%
1–4 weeks
23 22%
Over a month
53 51%

How the animals did

Recovered
11 6.9%
Recovered with lasting effects
8 5.0%
Still unwell when reported
68 43%
Died
7 4.4%
Euthanised
26 16%
Not known
39 25%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
9
4–7 years
32
8–11 years
72
12+ years
45

About this medicine

Type: medicine.

Questions owners ask

Can Fish Oil cause liver problems in dogs?
159 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?
In half of the reports with dates, it started within 36 days of the first dose.
What should I do?
Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Liver problems with similar medicines

All reported side effects of Fish Oil in dogs · Medicines most reported with liver problems