Kidney problems after Butorphanol in dogs

203 reports to the FDA describe kidney problems in dogs given Butorphanol. That is 4.6% of all reports for this medicine, compared with 2.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

203Reports
76%Marked serious
13%Recovered
41%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
39 25%
1–2 days
26 16%
3–7 days
34 22%
1–4 weeks
34 22%
Over a month
25 16%

How the animals did

Recovered
25 12%
Recovered with lasting effects
2 1.0%
Still unwell when reported
57 28%
Died
40 20%
Euthanised
44 22%
Not known
35 17%

Problems reported at the same time

Age of the animals

Under 1 year
16
1–3 years
32
4–7 years
58
8–11 years
71
12+ years
24

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause kidney problems in dogs?
203 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 4 days 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).

Kidney problems with similar medicines

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