Recovery prolonged after Butorphanol in dogs

104 reports to the FDA describe recovery prolonged in dogs given Butorphanol. That is 2.3% 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.

104Reports
38%Marked serious
49%Recovered
8.7%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
63 91%
1–2 days
1 1.4%
3–7 days
1 1.4%
1–4 weeks
2 2.9%
Over a month
2 2.9%

How the animals did

Recovered
50 48%
Recovered with lasting effects
1 1.0%
Still unwell when reported
20 19%
Died
7 6.7%
Euthanised
2 1.9%
Not known
24 23%

Problems reported at the same time

Age of the animals

Under 1 year
7
1–3 years
22
4–7 years
25
8–11 years
14
12+ years
9

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause recovery prolonged in dogs?
104 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).

Recovery prolonged with similar medicines

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