Vomiting after Butorphanol in cats

136 reports to the FDA describe vomiting in cats given Butorphanol. That is 6.1% of all reports for this medicine, compared with 18% across reports for all cat medicines, so it is reported less often than average with this medicine.

136Reports
60%Marked serious
29%Recovered
32%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
41 37%
1–2 days
33 30%
3–7 days
15 14%
1–4 weeks
14 13%
Over a month
8 7.2%

How the animals did

Recovered
40 29%
Still unwell when reported
25 18%
Died
24 18%
Euthanised
19 14%
Not known
28 21%

Problems reported at the same time

Age of the animals

Under 1 year
28
1–3 years
18
4–7 years
26
8–11 years
37
12+ years
23

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause vomiting in cats?
136 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 1 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).

Vomiting with similar medicines

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