Hypothermia after Pyrantel in cats

25 reports to the FDA describe hypothermia in cats given Pyrantel. That is 4.5% of all reports for this medicine, compared with 1.2% across reports for all cat medicines, so it is reported unusually often with this medicine.

25Reports

48%Marked serious

8.0%Recovered

48%Died or euthanised

17 daysTypical onset

How soon it started

Same day

2 15%

1–2 days

2 15%

3–7 days

2 15%

1–4 weeks

6 46%

Over a month

1 7.7%

How the animals did

Recovered

2 8.0%

Still unwell when reported

4 16%

Died

7 28%

Euthanised

5 20%

Not known

7 28%

Problems reported at the same time

13 52%

11 44%

9 36%

9 36%

8 32%

7 28%

Liver problems

6 24%

Abnormal radiograph finding

5 20%

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 hypothermia in cats?: 25 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 17 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).

Hypothermia with similar medicines

Hypothermia after Emodepside + Praziquantel (Profender) 38 reports · 0.7% of its reports

All reported side effects of Pyrantel in cats · Medicines most reported with hypothermia