Wobbliness (ataxia) after Ketamine in cats

The FDA has received 214 reports of wobbliness (ataxia) in cats after Ketamine. That is 6.6% of all reports for this medicine, compared with 4.7% across reports for all cat medicines.

214Reports
32%Marked serious
17%Recovered
17%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
54 57%
1–2 days
29 31%
3–7 days
4 4.2%
1–4 weeks
8 8.4%
Over a month
0 0.0%

How the animals did

Recovered
37 17%
Still unwell when reported
42 20%
Died
23 11%
Euthanised
14 6.5%
Not known
98 46%

Problems reported at the same time

Age of the animals

Under 1 year
72
1–3 years
32
4–7 years
26
8–11 years
25
12+ years
32

About this medicine

Type: medicine.

Questions owners ask

Can Ketamine cause wobbliness (ataxia) in cats?
214 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).

Wobbliness (ataxia) with similar medicines

All reported side effects of Ketamine in cats · Medicines most reported with wobbliness (ataxia)