Elevated temperature after Butorphanol in dogs

The FDA has received 48 reports of elevated temperature in dogs after Butorphanol. That is 1.1% of all reports for this medicine, compared with 0.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

48Reports
85%Marked serious
29%Recovered
19%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
26 65%
1–2 days
4 10%
3–7 days
5 13%
1–4 weeks
1 2.5%
Over a month
4 10%

How the animals did

Recovered
14 29%
Still unwell when reported
9 19%
Died
4 8.3%
Euthanised
5 10%
Not known
16 33%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
8
4–7 years
22
8–11 years
12
12+ years
1

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause elevated temperature in dogs?
48 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).

Elevated temperature with similar medicines

All reported side effects of Butorphanol in dogs · Medicines most reported with elevated temperature