Regurgitation after Butorphanol in dogs

The FDA has received 66 reports of regurgitation in dogs after Butorphanol. That is 1.5% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

66Reports
70%Marked serious
21%Recovered
18%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
24 43%
1–2 days
8 14%
3–7 days
12 21%
1–4 weeks
6 11%
Over a month
6 11%

How the animals did

Recovered
14 21%
Still unwell when reported
23 35%
Died
4 6.1%
Euthanised
8 12%
Not known
17 26%

Problems reported at the same time

Age of the animals

Under 1 year
5
1–3 years
17
4–7 years
25
8–11 years
15
12+ years
4

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause regurgitation in dogs?
66 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).

Regurgitation with similar medicines

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