Lethargy after Rabies Vaccine in cats

884 reports to the FDA describe lethargy in cats given Rabies Vaccine. That is 34% of all reports for this medicine, compared with 14% across reports for all cat medicines, so it is reported unusually often with this medicine.

884Reports
61%Marked serious
32%Recovered
15%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
325 39%
1–2 days
215 26%
3–7 days
101 12%
1–4 weeks
138 17%
Over a month
53 6.4%

How the animals did

Recovered
282 32%
Recovered with lasting effects
4 0.5%
Still unwell when reported
280 32%
Died
64 7.2%
Euthanised
68 7.7%
Not known
186 21%

Problems reported at the same time

Age of the animals

Under 1 year
139
1–3 years
261
4–7 years
225
8–11 years
141
12+ years
108

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 lethargy in cats?
884 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).

Lethargy with similar medicines

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