Allergic reaction after Isoflurane in dogs

137 reports to the FDA describe allergic reaction in dogs given Isoflurane. That is 5.0% of all reports for this medicine, compared with 2.3% across reports for all dog medicines, so it is reported unusually often with this medicine.

137Reports
66%Marked serious
47%Recovered
11%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
92 85%
1–2 days
7 6.5%
3–7 days
3 2.8%
1–4 weeks
3 2.8%
Over a month
3 2.8%

How the animals did

Recovered
64 47%
Still unwell when reported
39 28%
Died
9 6.6%
Euthanised
6 4.4%
Not known
19 14%

Problems reported at the same time

Age of the animals

Under 1 year
35
1–3 years
40
4–7 years
29
8–11 years
22
12+ years
4

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause allergic reaction in dogs?
137 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).

Allergic reaction with similar medicines

All reported side effects of Isoflurane in dogs · Medicines most reported with allergic reaction