Recovery prolonged after Isoflurane in cats

The FDA has received 83 reports of recovery prolonged in cats after Isoflurane. That is 4.1% of all reports for this medicine, compared with 0.4% across reports for all cat medicines, so it is reported unusually often with this medicine.

83Reports
48%Marked serious
39%Recovered
19%Died or euthanised
Same dayTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
67 94%
1–2 days
2 2.8%
3–7 days
1 1.4%
1–4 weeks
1 1.4%
Over a month
0 0.0%

How the animals did

Recovered
32 39%
Still unwell when reported
21 25%
Died
13 16%
Euthanised
3 3.6%
Not known
14 17%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
12
4–7 years
12
8–11 years
15
12+ years
20

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause recovery prolonged in cats?
83 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).

Recovery prolonged with similar medicines

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