Intentional misuse after Butorphanol in cats

The FDA has received 42 reports of intentional misuse in cats after Butorphanol. That is 1.9% of all reports for this medicine, compared with 0.5% across reports for all cat medicines, so it is reported unusually often with this medicine.

42Reports

86%Marked serious

17%Recovered

33%Died or euthanised

Same dayTypical onset

How soon it started

Same day

30 71%

1–2 days

5 12%

3–7 days

1 2.4%

1–4 weeks

4 9.5%

Over a month

2 4.8%

How the animals did

Recovered

7 17%

Still unwell when reported

18 43%

Died

11 26%

Euthanised

3 7.1%

Not known

3 7.1%

Problems reported at the same time

14 33%

11 26%

10 24%

9 21%

8 19%

6 14%

5 12%

Didn't work as expected

5 12%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause intentional misuse in cats?: 42 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).

Intentional misuse with similar medicines

Intentional misuse after Ketamine 46 reports · 1.4% of its reports
Intentional misuse after Isoflurane 22 reports · 1.1% of its reports
Intentional misuse after Methylprednisolone 34 reports · 2.1% of its reports
Intentional misuse after Propofol 25 reports · 2.1% of its reports
Intentional misuse after Atipamezole 27 reports · 2.6% of its reports

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