Behaviour change after Atipamezole in cats

84 reports to the FDA describe behaviour change in cats given Atipamezole. That is 8.1% of all reports for this medicine, compared with 5.4% across reports for all cat medicines.

84Reports
37%Marked serious
32%Recovered
9.5%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
50 70%
1–2 days
11 15%
3–7 days
4 5.6%
1–4 weeks
2 2.8%
Over a month
4 5.6%

How the animals did

Recovered
26 31%
Recovered with lasting effects
1 1.2%
Still unwell when reported
29 35%
Died
6 7.1%
Euthanised
2 2.4%
Not known
20 24%

Problems reported at the same time

Age of the animals

Under 1 year
18
1–3 years
12
4–7 years
25
8–11 years
12
12+ years
10

About this medicine

Type: medicine.

Questions owners ask

Can Atipamezole cause behaviour change in cats?
84 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).

Behaviour change with similar medicines

All reported side effects of Atipamezole in cats · Medicines most reported with behaviour change