Tremors after Pyrantel in dogs

The FDA has received 198 reports of tremors in dogs after Pyrantel. That is 4.1% of all reports for this medicine, compared with 3.4% across reports for all dog medicines.

198Reports

34%Marked serious

24%Recovered

14%Died or euthanised

1 daysTypical onset

How soon it started

Same day

46 44%

1–2 days

32 30%

3–7 days

8 7.6%

1–4 weeks

13 12%

Over a month

6 5.7%

How the animals did

Recovered

45 23%

Recovered with lasting effects

2 1.0%

Still unwell when reported

35 18%

Died

20 10%

Euthanised

8 4.0%

Not known

88 44%

Problems reported at the same time

66 33%

55 28%

36 18%

36 18%

33 17%

28 14%

28 14%

25 13%

Age of the animals

Under 1 year

115

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Pyrantel treats roundworms and hookworms.

Questions owners ask

Can Pyrantel cause tremors in dogs?: 198 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).

Tremors with similar medicines

Tremors after Pyrantel + Sarolaner (Simparica Trio) 2,595 reports · 4.9% of its reports
Tremors after Febantel + Praziquantel + Pyrantel (Drontal Plus) 149 reports · 2.2% of its reports
Tremors after Fenbendazole 229 reports · 3.9% of its reports
Tremors after Praziquantel + Pyrantel 212 reports · 5.8% of its reports
Tremors after Praziquantel 22 reports · 2.0% of its reports

All reported side effects of Pyrantel in dogs · Medicines most reported with tremors