Diarrhea after Ketamine in cats

The FDA has received 63 reports of diarrhea in cats after Ketamine. That is 1.9% of all reports for this medicine, compared with 5.1% across reports for all cat medicines, so it is reported less often than average with this medicine.

63Reports
46%Marked serious
35%Recovered
16%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
17 35%
1–2 days
15 31%
3–7 days
8 16%
1–4 weeks
8 16%
Over a month
1 2.0%

How the animals did

Recovered
22 35%
Still unwell when reported
18 29%
Died
7 11%
Euthanised
3 4.8%
Not known
13 21%

Problems reported at the same time

Age of the animals

Under 1 year
17
1–3 years
6
4–7 years
20
8–11 years
6
12+ years
13

About this medicine

Type: medicine.

Questions owners ask

Can Ketamine cause diarrhea in cats?
63 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 2 days 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).

Diarrhea with similar medicines

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