Breathing problems after Isoflurane in dogs

266 reports to the FDA describe breathing problems in dogs given Isoflurane. That is 9.6% of all reports for this medicine, compared with 2.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

266Reports
69%Marked serious
32%Recovered
33%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
120 61%
1–2 days
23 12%
3–7 days
18 9.1%
1–4 weeks
18 9.1%
Over a month
19 9.6%

How the animals did

Recovered
85 32%
Recovered with lasting effects
1 0.4%
Still unwell when reported
49 18%
Died
68 26%
Euthanised
20 7.5%
Not known
43 16%

Problems reported at the same time

Age of the animals

Under 1 year
28
1–3 years
60
4–7 years
68
8–11 years
66
12+ years
16

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause breathing problems in dogs?
266 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).

Breathing problems with similar medicines

All reported side effects of Isoflurane in dogs · Medicines most reported with breathing problems