Eye or vision problems after Pyrantel in dogs

51 reports to the FDA describe eye or vision problems in dogs given Pyrantel. That is 1.1% of all reports for this medicine, compared with 0.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

51Reports

43%Marked serious

9.8%Recovered

29%Died or euthanised

2 daysTypical onset

How soon it started

Same day

8 30%

1–2 days

6 22%

3–7 days

1 3.7%

1–4 weeks

6 22%

Over a month

6 22%

How the animals did

Recovered

5 9.8%

Still unwell when reported

11 22%

Died

12 24%

Euthanised

3 5.9%

Not known

20 39%

Problems reported at the same time

19 37%

17 33%

14 27%

13 25%

10 20%

10 20%

8 16%

8 16%

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 eye or vision problems in dogs?: 51 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 2 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).

Eye or vision problems with similar medicines

Eye or vision problems after Pyrantel + Sarolaner (Simparica Trio) 152 reports · 0.3% of its reports
Eye or vision problems after Febantel + Praziquantel + Pyrantel (Drontal Plus) 21 reports · 0.3% of its reports
Eye or vision problems after Fenbendazole 47 reports · 0.8% of its reports
Eye or vision problems after Praziquantel + Pyrantel 28 reports · 0.8% of its reports

All reported side effects of Pyrantel in dogs · Medicines most reported with eye or vision problems