Unclassifiable adverse event after Pyrantel in dogs

The FDA has received 20 reports of unclassifiable adverse event in dogs after Pyrantel. That is 0.4% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

20Reports
20%Marked serious
10%Recovered
5.0%Died or euthanised
–Typical onset
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How the animals did

Recovered
2 10%
Died
1 5.0%
Not known
17 85%

Problems reported at the same time

Conjunctivitis
2 10%
Respiratory tract infection
2 10%
Fracture
2 10%
1 5.0%
1 5.0%

Age of the animals

Under 1 year
11
1–3 years
1
4–7 years
3
8–11 years
0
12+ years
0

About this medicine

Pyrantel treats roundworms and hookworms.

Questions owners ask

Can Pyrantel cause unclassifiable adverse event in dogs?
20 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.
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).

All reported side effects of Pyrantel in dogs · Medicines most reported with unclassifiable adverse event