Diarrhea after Praziquantel in dogs

139 reports to the FDA describe diarrhea in dogs given Praziquantel. That is 13% of all reports for this medicine, compared with 8.4% across reports for all dog medicines.

139Reports

34%Marked serious

17%Recovered

7.9%Died or euthanised

2 daysTypical onset

How soon it started

Same day

23 27%

1–2 days

27 32%

3–7 days

18 21%

1–4 weeks

7 8.2%

Over a month

10 12%

How the animals did

Recovered

24 17%

Still unwell when reported

14 10%

Died

10 7.2%

Euthanised

1 0.7%

Not known

90 65%

Problems reported at the same time

66 47%

42 30%

30 22%

29 21%

Adipsia

10 7.2%

Death

9 6.5%

Mucous stool

6 4.3%

Wobbliness (ataxia)

5 3.6%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Praziquantel treats tapeworms.

Questions owners ask

Can Praziquantel cause diarrhea in dogs?: 139 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).

Diarrhea with similar medicines

Diarrhea after Pyrantel + Sarolaner (Simparica Trio) 4,331 reports · 8.1% of its reports
Diarrhea after Febantel + Praziquantel + Pyrantel (Drontal Plus) 815 reports · 12% of its reports
Diarrhea after Fenbendazole 1,091 reports · 19% of its reports
Diarrhea after Pyrantel 785 reports · 16% of its reports
Diarrhea after Praziquantel + Pyrantel 740 reports · 20% of its reports

All reported side effects of Praziquantel in dogs · Medicines most reported with diarrhea