Overdose after Praziquantel in cats

45 reports to the FDA describe overdose in cats given Praziquantel. That is 2.7% of all reports for this medicine, compared with 0.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

45Reports
24%Marked serious
42%Recovered
0.0%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
12 40%
1–2 days
6 20%
3–7 days
3 10%
1–4 weeks
5 17%
Over a month
4 13%

How the animals did

Recovered
19 42%
Still unwell when reported
5 11%
Not known
21 47%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
17
4–7 years
3
8–11 years
4
12+ years
2

About this medicine

Praziquantel treats tapeworms.

Questions owners ask

Can Praziquantel cause overdose in cats?
45 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).

Overdose with similar medicines

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