Diarrhea after Butorphanol in cats

76 reports to the FDA describe diarrhea in cats given Butorphanol. That is 3.4% of all reports for this medicine, compared with 5.1% across reports for all cat medicines, so it is reported less often than average with this medicine.

76Reports
54%Marked serious
39%Recovered
14%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
18 29%
1–2 days
23 37%
3–7 days
9 14%
1–4 weeks
10 16%
Over a month
3 4.8%

How the animals did

Recovered
30 39%
Still unwell when reported
23 30%
Died
7 9.2%
Euthanised
4 5.3%
Not known
12 16%

Problems reported at the same time

Age of the animals

Under 1 year
12
1–3 years
5
4–7 years
23
8–11 years
14
12+ years
19

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause diarrhea in cats?
76 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 2 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).

Diarrhea with similar medicines

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