Anisocoria after Ketamine in cats

28 reports to the FDA describe anisocoria in cats given Ketamine. That is 0.9% 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.

28Reports

32%Marked serious

18%Recovered

14%Died or euthanised

Same dayTypical onset

How soon it started

Same day

11 79%

1–2 days

0 0.0%

3–7 days

0 0.0%

1–4 weeks

3 21%

Over a month

0 0.0%

How the animals did

Recovered

5 18%

Still unwell when reported

8 29%

Died

3 11%

Euthanised

1 3.6%

Not known

11 39%

Problems reported at the same time

10 36%

9 32%

8 29%

5 18%

5 18%

4 14%

Third eyelid protrusion

4 14%

Lethargy

3 11%

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 Ketamine cause anisocoria in cats?: 28 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).

Anisocoria with similar medicines

Anisocoria after Butorphanol 20 reports · 0.9% of its reports
Anisocoria after Florfenicol + Mometasone + Terbinafine 106 reports · 15% of its reports
Anisocoria after Betamethasone + Florfenicol + Terbinafine 39 reports · 15% of its reports

All reported side effects of Ketamine in cats · Medicines most reported with anisocoria