Recumbency after Pyrantel in dogs

The FDA has received 42 reports of recumbency in dogs after Pyrantel. That is 0.9% of all reports for this medicine, compared with 0.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

42Reports

26%Marked serious

9.5%Recovered

48%Died or euthanised

Same dayTypical onset

How soon it started

Same day

10 67%

1–2 days

1 6.7%

3–7 days

2 13%

1–4 weeks

0 0.0%

Over a month

2 13%

How the animals did

Recovered

4 9.5%

Still unwell when reported

3 7.1%

Died

18 43%

Euthanised

2 4.8%

Not known

15 36%

Problems reported at the same time

22 52%

20 48%

17 40%

13 31%

11 26%

8 19%

7 17%

6 14%

Age of the animals

Under 1 year

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 recumbency in dogs?: 42 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).

Recumbency with similar medicines

Recumbency after Pyrantel + Sarolaner (Simparica Trio) 33 reports · 0.1% of its reports
Recumbency after Fenbendazole 38 reports · 0.6% of its reports

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