Breathing problems after Butorphanol in dogs

404 reports to the FDA describe breathing problems in dogs given Butorphanol. That is 9.1% of all reports for this medicine, compared with 2.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

404Reports
76%Marked serious
27%Recovered
34%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
182 53%
1–2 days
47 14%
3–7 days
34 9.9%
1–4 weeks
31 9.0%
Over a month
51 15%

How the animals did

Recovered
107 26%
Recovered with lasting effects
2 0.5%
Still unwell when reported
95 24%
Died
86 21%
Euthanised
53 13%
Not known
61 15%

Problems reported at the same time

Age of the animals

Under 1 year
30
1–3 years
86
4–7 years
110
8–11 years
111
12+ years
46

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause breathing problems in dogs?
404 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).

Breathing problems with similar medicines

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