Wobbliness (ataxia) after Praziquantel in dogs

35 reports to the FDA describe wobbliness (ataxia) in dogs given Praziquantel. That is 3.2% of all reports for this medicine, compared with 2.6% across reports for all dog medicines.

35Reports
34%Marked serious
23%Recovered
11%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
9 45%
1–2 days
5 25%
3–7 days
3 15%
1–4 weeks
0 0.0%
Over a month
3 15%

How the animals did

Recovered
7 20%
Recovered with lasting effects
1 2.9%
Still unwell when reported
1 2.9%
Died
2 5.7%
Euthanised
2 5.7%
Not known
22 63%

Problems reported at the same time

12 34%
10 29%
6 17%
Head tilt - ear disorder
4 11%
Seizures
4 11%
4 11%
Weakness
3 8.6%

Age of the animals

Under 1 year
13
1–3 years
6
4–7 years
5
8–11 years
4
12+ years
4

About this medicine

Praziquantel treats tapeworms.

Questions owners ask

Can Praziquantel cause wobbliness (ataxia) in dogs?
35 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).

Wobbliness (ataxia) with similar medicines

All reported side effects of Praziquantel in dogs · Medicines most reported with wobbliness (ataxia)