Vomiting after Isoflurane in cats

The FDA has received 104 reports of vomiting in cats after Isoflurane. That is 5.1% of all reports for this medicine, compared with 18% across reports for all cat medicines, so it is reported less often than average with this medicine.

104Reports
64%Marked serious
23%Recovered
24%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
29 33%
1–2 days
33 38%
3–7 days
14 16%
1–4 weeks
6 6.9%
Over a month
5 5.7%

How the animals did

Recovered
24 23%
Still unwell when reported
31 30%
Died
21 20%
Euthanised
4 3.8%
Not known
24 23%

Problems reported at the same time

Age of the animals

Under 1 year
32
1–3 years
13
4–7 years
21
8–11 years
18
12+ years
19

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause vomiting in cats?
104 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 1 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).

Vomiting with similar medicines

All reported side effects of Isoflurane in cats · Medicines most reported with vomiting