Dehydration after Butorphanol in dogs

103 reports to the FDA describe dehydration in dogs given Butorphanol. That is 2.3% of all reports for this medicine, compared with 0.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

103Reports
73%Marked serious
17%Recovered
35%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
25 27%
1–2 days
27 30%
3–7 days
11 12%
1–4 weeks
17 19%
Over a month
11 12%

How the animals did

Recovered
16 16%
Recovered with lasting effects
1 1.0%
Still unwell when reported
32 31%
Died
16 16%
Euthanised
20 19%
Not known
18 17%

Problems reported at the same time

Age of the animals

Under 1 year
6
1–3 years
19
4–7 years
41
8–11 years
32
12+ years
5

About this medicine

Type: medicine.

Questions owners ask

Can Butorphanol cause dehydration in dogs?
103 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).

Dehydration with similar medicines

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