Tremors after Cetirizine in dogs

38 reports to the FDA describe tremors in dogs given Cetirizine. That is 5.7% of all reports for this medicine, compared with 3.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

38Reports
42%Marked serious
37%Recovered
11%Died or euthanised
28 daysTypical onset
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How soon it started

Same day
7 23%
1–2 days
2 6.7%
3–7 days
2 6.7%
1–4 weeks
6 20%
Over a month
13 43%

How the animals did

Recovered
12 32%
Recovered with lasting effects
2 5.3%
Still unwell when reported
10 26%
Died
1 2.6%
Euthanised
3 7.9%
Not known
10 26%

Problems reported at the same time

11 29%
6 16%
Disorientation
4 11%

Age of the animals

Under 1 year
1
1–3 years
12
4–7 years
9
8–11 years
11
12+ years
5

About this medicine

Type: medicine.

Questions owners ask

Can Cetirizine cause tremors in dogs?
38 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 28 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).

Tremors with similar medicines

All reported side effects of Cetirizine in dogs · Medicines most reported with tremors