Urinary incontinence after Pyrantel in dogs

The FDA has received 22 reports of urinary incontinence in dogs after Pyrantel. That is 0.5% of all reports for this medicine, compared with 0.6% across reports for all dog medicines.

22Reports

68%Marked serious

27%Recovered

4.5%Died or euthanised

1 daysTypical onset

How soon it started

Same day

5 33%

1–2 days

5 33%

3–7 days

0 0.0%

1–4 weeks

2 13%

Over a month

3 20%

How the animals did

Recovered

5 23%

Recovered with lasting effects

1 4.5%

Still unwell when reported

11 50%

Euthanised

1 4.5%

Not known

4 18%

Problems reported at the same time

10 45%

6 27%

6 27%

6 27%

6 27%

Restlessness or agitation

5 23%

Breathing problems

4 18%

Weight loss

4 18%

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 urinary incontinence in dogs?: 22 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 1 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).

Urinary incontinence with similar medicines

Urinary incontinence after Pyrantel + Sarolaner (Simparica Trio) 187 reports · 0.4% of its reports
Urinary incontinence after Fenbendazole 24 reports · 0.4% of its reports

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