Seizures after Lyme Vaccine in dogs

The FDA has received 115 reports of seizures in dogs after Lyme Vaccine. That is 1.6% of all reports for this medicine, compared with 4.4% across reports for all dog medicines, so it is reported less often than average with this medicine.

115Reports
87%Marked serious
26%Recovered
22%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
25 26%
1–2 days
23 24%
3–7 days
13 14%
1–4 weeks
20 21%
Over a month
14 15%

How the animals did

Recovered
30 26%
Still unwell when reported
35 30%
Died
12 10%
Euthanised
13 11%
Not known
25 22%

Problems reported at the same time

Age of the animals

Under 1 year
14
1–3 years
31
4–7 years
38
8–11 years
28
12+ years
4

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 Lyme Vaccine cause seizures in dogs?
115 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).

Seizures with similar medicines

All reported side effects of Lyme Vaccine in dogs · Medicines most reported with seizures