Itching after Pyrantel in dogs

The FDA has received 157 reports of itching in dogs after Pyrantel. That is 3.3% of all reports for this medicine, compared with 4.3% across reports for all dog medicines.

157Reports

39%Marked serious

26%Recovered

5.1%Died or euthanised

Same dayTypical onset

How soon it started

Same day

70 61%

1–2 days

13 11%

3–7 days

4 3.5%

1–4 weeks

11 9.6%

Over a month

17 15%

How the animals did

Recovered

39 25%

Recovered with lasting effects

2 1.3%

Still unwell when reported

57 36%

Died

3 1.9%

Euthanised

5 3.2%

Not known

51 32%

Problems reported at the same time

54 34%

47 30%

45 29%

27 17%

20 13%

19 12%

19 12%

15 9.6%

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 itching in dogs?: 157 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).

Itching with similar medicines

Itching after Pyrantel + Sarolaner (Simparica Trio) 1,535 reports · 2.9% of its reports
Itching after Febantel + Praziquantel + Pyrantel (Drontal Plus) 157 reports · 2.3% of its reports
Itching after Fenbendazole 125 reports · 2.1% of its reports
Itching after Praziquantel + Pyrantel 81 reports · 2.2% of its reports
Itching after Praziquantel 38 reports · 3.4% of its reports

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