Excessive urination after Pyrantel in dogs

27 reports to the FDA describe excessive urination in dogs given Pyrantel. That is 0.6% of all reports for this medicine, compared with 1.0% across reports for all dog medicines, so it is reported less often than average with this medicine.

27Reports

44%Marked serious

30%Recovered

7.4%Died or euthanised

2 daysTypical onset

How soon it started

Same day

6 27%

1–2 days

7 32%

3–7 days

4 18%

1–4 weeks

1 4.5%

Over a month

4 18%

How the animals did

Recovered

7 26%

Recovered with lasting effects

1 3.7%

Still unwell when reported

11 41%

Died

1 3.7%

Euthanised

1 3.7%

Not known

6 22%

Problems reported at the same time

15 56%

8 30%

7 26%

7 26%

7 26%

6 22%

Decreased urine concentration

5 19%

Kidney problems

5 19%

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 excessive urination in dogs?: 27 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).

Excessive urination with similar medicines

Excessive urination after Pyrantel + Sarolaner (Simparica Trio) 242 reports · 0.5% of its reports
Excessive urination after Febantel + Praziquantel + Pyrantel (Drontal Plus) 28 reports · 0.4% of its reports
Excessive urination after Fenbendazole 44 reports · 0.7% of its reports

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