Loose stool after Lyme Vaccine in dogs

The FDA has received 41 reports of loose stool in dogs after Lyme Vaccine. That is 0.6% of all reports for this medicine, compared with 0.9% across reports for all dog medicines, so it is reported less often than average with this medicine.

41Reports

54%Marked serious

22%Recovered

7.3%Died or euthanised

1 daysTypical onset

How soon it started

Same day

14 45%

1–2 days

5 16%

3–7 days

1 3.2%

1–4 weeks

6 19%

Over a month

5 16%

How the animals did

Recovered

9 22%

Still unwell when reported

19 46%

Euthanised

3 7.3%

Not known

10 24%

Problems reported at the same time

21 51%

16 39%

15 37%

8 20%

8 20%

8 20%

6 15%

Didn't work as expected

6 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 Lyme Vaccine cause loose stool in dogs?: 41 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).

Loose stool with similar medicines

Loose stool after Rabies Vaccine 137 reports · 1.4% of its reports
Loose stool after Bordetella Vaccine 164 reports · 1.7% of its reports
Loose stool after Leptospirosis Vaccine 145 reports · 1.8% of its reports
Loose stool after Distemper-parvo Vaccine 124 reports · 1.9% of its reports

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