Dilated pupils after Atipamezole in cats

67 reports to the FDA describe dilated pupils in cats given Atipamezole. That is 6.5% of all reports for this medicine, compared with 1.4% across reports for all cat medicines, so it is reported unusually often with this medicine.

67Reports
63%Marked serious
27%Recovered
15%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
49 74%
1–2 days
11 17%
3–7 days
3 4.5%
1–4 weeks
0 0.0%
Over a month
3 4.5%

How the animals did

Recovered
17 25%
Recovered with lasting effects
1 1.5%
Still unwell when reported
34 51%
Died
8 12%
Euthanised
2 3.0%
Not known
5 7.5%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
10
4–7 years
18
8–11 years
13
12+ years
9

About this medicine

Type: medicine.

Questions owners ask

Can Atipamezole cause dilated pupils in cats?
67 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 the same day 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).

Dilated pupils with similar medicines

All reported side effects of Atipamezole in cats · Medicines most reported with dilated pupils