Diarrhea after Isoflurane in cats

The FDA has received 60 reports of diarrhea in cats after Isoflurane. That is 3.0% of all reports for this medicine, compared with 5.1% across reports for all cat medicines, so it is reported less often than average with this medicine.

60Reports
58%Marked serious
25%Recovered
13%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
22 42%
1–2 days
14 27%
3–7 days
12 23%
1–4 weeks
3 5.8%
Over a month
1 1.9%

How the animals did

Recovered
15 25%
Still unwell when reported
26 43%
Died
6 10%
Euthanised
2 3.3%
Not known
11 18%

Problems reported at the same time

Age of the animals

Under 1 year
16
1–3 years
3
4–7 years
11
8–11 years
10
12+ years
18

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause diarrhea in cats?
60 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).

Diarrhea with similar medicines

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