Blood in vomit after Pyrantel in dogs

The FDA has received 47 reports of blood in vomit in dogs after Pyrantel. That is 1.0% 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.

47Reports

38%Marked serious

6.4%Recovered

36%Died or euthanised

Same dayTypical onset

How soon it started

Same day

16 70%

1–2 days

5 22%

3–7 days

0 0.0%

1–4 weeks

2 8.7%

Over a month

0 0.0%

How the animals did

Recovered

3 6.4%

Still unwell when reported

11 23%

Died

16 34%

Euthanised

1 2.1%

Not known

16 34%

Problems reported at the same time

24 51%

23 49%

17 36%

15 32%

13 28%

7 15%

6 13%

5 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 blood in vomit in dogs?: 47 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).

Blood in vomit with similar medicines

Blood in vomit after Pyrantel + Sarolaner (Simparica Trio) 114 reports · 0.2% of its reports
Blood in vomit after Febantel + Praziquantel + Pyrantel (Drontal Plus) 20 reports · 0.3% of its reports
Blood in vomit after Fenbendazole 44 reports · 0.7% of its reports
Blood in vomit after Praziquantel + Pyrantel 38 reports · 1.0% of its reports

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