Hiding after Butorphanol in cats

The FDA has received 58 reports of hiding in cats after Butorphanol. That is 2.6% of all reports for this medicine, compared with 2.4% across reports for all cat medicines.

58Reports
47%Marked serious
28%Recovered
16%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
31 58%
1–2 days
11 21%
3–7 days
4 7.5%
1–4 weeks
7 13%
Over a month
0 0.0%

How the animals did

Recovered
15 26%
Recovered with lasting effects
1 1.7%
Still unwell when reported
23 40%
Died
4 6.9%
Euthanised
5 8.6%
Not known
10 17%

Problems reported at the same time

Age of the animals

Under 1 year
9
1–3 years
9
4–7 years
10
8–11 years
17
12+ years
11

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause hiding in cats?
58 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).

Hiding with similar medicines

All reported side effects of Butorphanol in cats · Medicines most reported with hiding