Tachycardia after Lyme Vaccine in dogs

The FDA has received 40 reports of tachycardia in dogs after Lyme Vaccine. That is 0.6% of all reports for this medicine, compared with 0.5% across reports for all dog medicines.

40Reports

90%Marked serious

38%Recovered

20%Died or euthanised

Same dayTypical onset

How soon it started

Same day

23 62%

1–2 days

4 11%

3–7 days

3 8.1%

1–4 weeks

4 11%

Over a month

3 8.1%

How the animals did

Recovered

15 38%

Still unwell when reported

16 40%

Died

1 2.5%

Euthanised

7 18%

Not known

1 2.5%

Problems reported at the same time

26 65%

24 60%

22 55%

19 48%

14 35%

13 33%

11 28%

11 28%

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 Lyme Vaccine cause tachycardia in dogs?: 40 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).

Tachycardia with similar medicines

Tachycardia after Rabies Vaccine 207 reports · 2.1% of its reports
Tachycardia after Bordetella Vaccine 192 reports · 2.0% of its reports
Tachycardia after Leptospirosis Vaccine 142 reports · 1.8% of its reports
Tachycardia after Distemper-parvo Vaccine 121 reports · 1.9% of its reports

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