Didn't stop worms after Pyriproxyfen in dogs

The FDA has received 20 reports of didn't stop worms in dogs after Pyriproxyfen. That is 6.7% of all reports for this medicine, compared with 8.4% across reports for all dog medicines.

20Reports
5.0%Marked serious
10%Recovered
0.0%Died or euthanised
–Typical onset
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How the animals did

Recovered
2 10%
Still unwell when reported
1 5.0%
Not known
17 85%

Problems reported at the same time

Diarrhea
2 10%
Mucous stool
2 10%
Eosinophilia
1 5.0%
Loose stool
1 5.0%
Administration error
1 5.0%

Age of the animals

Under 1 year
8
1–3 years
5
4–7 years
6
8–11 years
1
12+ years
0

About this medicine

Type: medicine.

Questions owners ask

Can Pyriproxyfen cause didn't stop worms 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).

Didn't stop worms with similar medicines

All reported side effects of Pyriproxyfen in dogs · Medicines most reported with didn't stop worms