Reddening of the skin after Pyrantel in dogs

28 reports to the FDA describe reddening of the skin in dogs given Pyrantel. That is 0.6% 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.

28Reports

43%Marked serious

29%Recovered

7.1%Died or euthanised

Same dayTypical onset

How soon it started

Same day

15 63%

1–2 days

4 17%

3–7 days

1 4.2%

1–4 weeks

0 0.0%

Over a month

4 17%

How the animals did

Recovered

8 29%

Still unwell when reported

13 46%

Euthanised

2 7.1%

Not known

5 18%

Problems reported at the same time

15 54%

14 50%

12 43%

11 39%

6 21%

5 18%

4 14%

3 11%

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 reddening of the skin in dogs?: 28 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).

Reddening of the skin with similar medicines

Reddening of the skin after Pyrantel + Sarolaner (Simparica Trio) 156 reports · 0.3% of its reports

All reported side effects of Pyrantel in dogs · Medicines most reported with reddening of the skin