Behaviour change after Tiletamine + Zolazepam in cats

The FDA has received 73 reports of behaviour change in cats after Tiletamine + Zolazepam. That is 4.4% of all reports for this medicine, compared with 5.4% across reports for all cat medicines.

73Reports
19%Marked serious
19%Recovered
11%Died or euthanised
Same dayTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
28 67%
1–2 days
10 24%
3–7 days
3 7.1%
1–4 weeks
0 0.0%
Over a month
1 2.4%

How the animals did

Recovered
14 19%
Still unwell when reported
16 22%
Died
3 4.1%
Euthanised
5 6.8%
Not known
35 48%

Problems reported at the same time

Age of the animals

Under 1 year
22
1–3 years
12
4–7 years
10
8–11 years
12
12+ years
5

About this medicine

Type: medicine.

Questions owners ask

Can Tiletamine + Zolazepam cause behaviour change in cats?
73 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).

Behaviour change with similar medicines

All reported side effects of Tiletamine + Zolazepam in cats · Medicines most reported with behaviour change