Anisocoria after Rabies Vaccine in cats

26 reports to the FDA describe anisocoria in cats given Rabies Vaccine. That is 1.0% of all reports for this medicine, compared with 0.4% across reports for all cat medicines, so it is reported unusually often with this medicine.

26Reports

69%Marked serious

19%Recovered

19%Died or euthanised

1 daysTypical onset

How soon it started

Same day

11 46%

1–2 days

4 17%

3–7 days

4 17%

1–4 weeks

2 8.3%

Over a month

3 13%

How the animals did

Recovered

5 19%

Still unwell when reported

11 42%

Died

1 3.8%

Euthanised

4 15%

Not known

5 19%

Problems reported at the same time

Loss of appetite

11 42%

Wobbliness (ataxia)

10 38%

Third eyelid protrusion

6 23%

6 23%

6 23%

6 23%

5 19%

4 15%

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 Rabies Vaccine cause anisocoria in cats?: 26 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 1 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).

All reported side effects of Rabies Vaccine in cats · Medicines most reported with anisocoria