Diarrhea after Butorphanol in dogs

520 reports to the FDA describe diarrhea in dogs given Butorphanol. That is 12% of all reports for this medicine, compared with 8.4% across reports for all dog medicines.

520Reports
62%Marked serious
27%Recovered
15%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
147 33%
1–2 days
153 34%
3–7 days
55 12%
1–4 weeks
44 9.8%
Over a month
49 11%

How the animals did

Recovered
142 27%
Still unwell when reported
180 35%
Died
42 8.1%
Euthanised
35 6.7%
Not known
121 23%

Problems reported at the same time

Age of the animals

Under 1 year
42
1–3 years
103
4–7 years
177
8–11 years
119
12+ years
51

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause diarrhea in dogs?
520 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).

Diarrhea with similar medicines

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