Underdose after Isoflurane in cats

22 reports to the FDA describe underdose in cats given Isoflurane. That is 1.1% of all reports for this medicine, compared with 0.7% across reports for all cat medicines.

22Reports

50%Marked serious

32%Recovered

23%Died or euthanised

Same dayTypical onset

How soon it started

Same day

15 79%

1–2 days

1 5.3%

3–7 days

2 11%

1–4 weeks

1 5.3%

Over a month

0 0.0%

How the animals did

Recovered

7 32%

Still unwell when reported

8 36%

Died

5 23%

Not known

2 9.1%

Problems reported at the same time

Death

5 23%

Intentional misuse

4 18%

Didn't work as expected

3 14%

3 14%

2 9.1%

2 9.1%

2 9.1%

2 9.1%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause underdose in cats?: 22 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).

Underdose with similar medicines

Underdose after Ketamine 57 reports · 1.8% of its reports
Underdose after Butorphanol 44 reports · 2.0% of its reports
Underdose after Tiletamine + Zolazepam 22 reports · 1.3% of its reports

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