Swelling after Praziquantel in cats

41 reports to the FDA describe swelling in cats given Praziquantel. That is 2.5% of all reports for this medicine, compared with 1.9% across reports for all cat medicines.

41Reports

37%Marked serious

22%Recovered

7.3%Died or euthanised

Same dayTypical onset

How soon it started

Same day

15 52%

1–2 days

5 17%

3–7 days

3 10%

1–4 weeks

3 10%

Over a month

3 10%

How the animals did

Recovered

9 22%

Still unwell when reported

7 17%

Died

3 7.3%

Not known

22 54%

Problems reported at the same time

Injection site reaction

14 34%

6 15%

6 15%

5 12%

5 12%

5 12%

4 9.8%

4 9.8%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Praziquantel treats tapeworms.

Questions owners ask

Can Praziquantel cause swelling in cats?: 41 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).

Swelling with similar medicines

Swelling after Emodepside + Praziquantel (Profender) 86 reports · 1.5% of its reports
Swelling after Praziquantel + Pyrantel 22 reports · 1.7% of its reports
Swelling after Pyrantel 23 reports · 4.1% of its reports

All reported side effects of Praziquantel in cats · Medicines most reported with swelling