Fever after Praziquantel + Pyrantel in cats

43 reports to the FDA describe fever in cats given Praziquantel + Pyrantel. That is 3.4% of all reports for this medicine, compared with 3.2% across reports for all cat medicines.

43Reports

49%Marked serious

42%Recovered

9.3%Died or euthanised

1 daysTypical onset

How soon it started

Same day

13 38%

1–2 days

10 29%

3–7 days

4 12%

1–4 weeks

4 12%

Over a month

3 8.8%

How the animals did

Recovered

17 40%

Recovered with lasting effects

1 2.3%

Still unwell when reported

6 14%

Died

3 7.0%

Euthanised

1 2.3%

Not known

15 35%

Problems reported at the same time

21 49%

18 42%

9 21%

9 21%

7 16%

6 14%

6 14%

5 12%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Praziquantel treats tapeworms. Pyrantel treats roundworms and hookworms.

Questions owners ask

Can Praziquantel + Pyrantel cause fever in cats?: 43 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).

Fever with similar medicines

Fever after Emodepside + Praziquantel (Profender) 161 reports · 2.8% of its reports
Fever after Praziquantel 26 reports · 1.6% of its reports
Fever after Pyrantel 57 reports · 10% of its reports

All reported side effects of Praziquantel + Pyrantel in cats · Medicines most reported with fever