Abnormal radiograph finding after Pyrantel in dogs

The FDA has received 48 reports of abnormal radiograph finding in dogs after Pyrantel. That is 1.0% of all reports for this medicine, compared with 0.9% across reports for all dog medicines.

48Reports

54%Marked serious

6.3%Recovered

38%Died or euthanised

3 daysTypical onset

How soon it started

Same day

7 21%

1–2 days

9 27%

3–7 days

8 24%

1–4 weeks

7 21%

Over a month

2 6.1%

How the animals did

Recovered

3 6.3%

Still unwell when reported

12 25%

Died

10 21%

Euthanised

8 17%

Not known

15 31%

Problems reported at the same time

26 54%

23 48%

18 38%

18 38%

13 27%

12 25%

11 23%

11 23%

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 abnormal radiograph finding in dogs?: 48 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 3 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).

Abnormal radiograph finding with similar medicines

Abnormal radiograph finding after Pyrantel + Sarolaner (Simparica Trio) 118 reports · 0.2% of its reports
Abnormal radiograph finding after Febantel + Praziquantel + Pyrantel (Drontal Plus) 25 reports · 0.4% of its reports
Abnormal radiograph finding after Fenbendazole 70 reports · 1.2% of its reports

All reported side effects of Pyrantel in dogs · Medicines most reported with abnormal radiograph finding