Restlessness or agitation after Feline Core Vaccine in cats

The FDA has received 42 reports of restlessness or agitation in cats after Feline Core Vaccine. That is 2.7% of all reports for this medicine, compared with 4.9% across reports for all cat medicines, so it is reported less often than average with this medicine.

42Reports

57%Marked serious

36%Recovered

12%Died or euthanised

Same dayTypical onset

How soon it started

Same day

20 51%

1–2 days

5 13%

3–7 days

6 15%

1–4 weeks

7 18%

Over a month

1 2.6%

How the animals did

Recovered

15 36%

Still unwell when reported

10 24%

Died

4 9.5%

Euthanised

1 2.4%

Not known

12 29%

Problems reported at the same time

15 36%

14 33%

12 29%

10 24%

10 24%

7 17%

6 14%

5 12%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: vaccine.

Mild, short-lived lethargy, soreness or a small lump at the injection site are the most commonly reported vaccine reactions.

Questions owners ask

Can Feline Core Vaccine cause restlessness or agitation in cats?: 42 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).

Restlessness or agitation with similar medicines

Restlessness or agitation after Rabies Vaccine 79 reports · 3.1% of its reports
Restlessness or agitation after Feline Leukemia Vaccine 26 reports · 3.3% of its reports

All reported side effects of Feline Core Vaccine in cats · Medicines most reported with restlessness or agitation