Weight loss after Hydroxyzine in dogs

31 reports to the FDA describe weight loss in dogs given Hydroxyzine. That is 3.0% of all reports for this medicine, compared with 1.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

31Reports
74%Marked serious
19%Recovered
13%Died or euthanised
30 daysTypical onset
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How soon it started

Same day
3 13%
1–2 days
2 8.7%
3–7 days
4 17%
1–4 weeks
3 13%
Over a month
11 48%

How the animals did

Recovered
3 9.7%
Recovered with lasting effects
3 9.7%
Still unwell when reported
16 52%
Died
2 6.5%
Euthanised
2 6.5%
Not known
5 16%

Problems reported at the same time

16 52%
12 39%
7 23%
Dehydration
6 19%

Age of the animals

Under 1 year
0
1–3 years
9
4–7 years
4
8–11 years
9
12+ years
9

About this medicine

Type: medicine.

Questions owners ask

Can Hydroxyzine cause weight loss in dogs?
31 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 30 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).

Weight loss with similar medicines

All reported side effects of Hydroxyzine in dogs · Medicines most reported with weight loss