Hiding after Praziquantel + Pyrantel in cats

The FDA has received 25 reports of hiding in cats after Praziquantel + Pyrantel. That is 2.0% of all reports for this medicine, compared with 2.4% across reports for all cat medicines.

25Reports

56%Marked serious

32%Recovered

8.0%Died or euthanised

Same dayTypical onset

How soon it started

Same day

15 75%

1–2 days

1 5.0%

3–7 days

2 10%

1–4 weeks

2 10%

Over a month

0 0.0%

How the animals did

Recovered

8 32%

Died

1 4.0%

Euthanised

1 4.0%

Not known

15 60%

Problems reported at the same time

12 48%

8 32%

7 28%

5 20%

4 16%

4 16%

3 12%

3 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 hiding 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 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).

Hiding with similar medicines

Hiding after Emodepside + Praziquantel (Profender) 154 reports · 2.7% of its reports
Hiding after Praziquantel 46 reports · 2.8% of its reports

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