Underdose after Ketamine in cats

The FDA has received 57 reports of underdose in cats after Ketamine. That is 1.8% of all reports for this medicine, compared with 0.7% across reports for all cat medicines, so it is reported unusually often with this medicine.

57Reports

68%Marked serious

42%Recovered

32%Died or euthanised

Same dayTypical onset

How soon it started

Same day

46 90%

1–2 days

2 3.9%

3–7 days

0 0.0%

1–4 weeks

2 3.9%

Over a month

1 2.0%

How the animals did

Recovered

24 42%

Still unwell when reported

12 21%

Died

14 25%

Euthanised

4 7.0%

Not known

3 5.3%

Problems reported at the same time

Death

18 32%

Didn't work as expected

17 30%

13 23%

7 12%

7 12%

6 11%

Restlessness or agitation

5 8.8%

Loss of appetite

4 7.0%

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 underdose in cats?: 57 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 Butorphanol 44 reports · 2.0% of its reports
Underdose after Isoflurane 22 reports · 1.1% of its reports
Underdose after Tiletamine + Zolazepam 22 reports · 1.3% of its reports

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