Liver problems after Cetirizine in dogs

The FDA has received 47 reports of liver problems in dogs after Cetirizine. That is 7.1% 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.

47Reports
49%Marked serious
13%Recovered
19%Died or euthanised
84 daysTypical onset
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How soon it started

Same day
3 8.1%
1–2 days
2 5.4%
3–7 days
3 8.1%
1–4 weeks
6 16%
Over a month
23 62%

How the animals did

Recovered
4 8.5%
Recovered with lasting effects
2 4.3%
Still unwell when reported
25 53%
Died
2 4.3%
Euthanised
7 15%
Not known
7 15%

Problems reported at the same time

17 36%
15 32%
9 19%
Blood problems
8 17%

Age of the animals

Under 1 year
1
1–3 years
5
4–7 years
13
8–11 years
22
12+ years
6

About this medicine

Type: medicine.

Questions owners ask

Can Cetirizine cause liver problems in dogs?
47 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 84 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 Cetirizine in dogs · Medicines most reported with liver problems