Abnormal menace reflex test after Isoflurane in cats

The FDA has received 22 reports of abnormal menace reflex test in cats after Isoflurane. That is 1.1% of all reports for this medicine, compared with 0.2% across reports for all cat medicines, so it is reported unusually often with this medicine.

22Reports

91%Marked serious

36%Recovered

18%Died or euthanised

Same dayTypical onset

How soon it started

Same day

11 61%

1–2 days

4 22%

3–7 days

1 5.6%

1–4 weeks

0 0.0%

Over a month

2 11%

How the animals did

Recovered

8 36%

Still unwell when reported

9 41%

Died

3 14%

Euthanised

1 4.5%

Not known

1 4.5%

Problems reported at the same time

Eye or vision problems

14 64%

Wobbliness (ataxia)

8 36%

Restlessness or agitation

6 27%

5 23%

5 23%

4 18%

4 18%

4 18%

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 abnormal menace reflex test 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).

Abnormal menace reflex test with similar medicines

Abnormal menace reflex test after Ketamine 22 reports · 0.7% of its reports
Abnormal menace reflex test after Orbifloxacin 20 reports · 2.9% of its reports

All reported side effects of Isoflurane in cats · Medicines most reported with abnormal menace reflex test