Didn't stop worms after Epsiprantel in cats

68 reports to the FDA describe didn't stop worms in cats given Epsiprantel. That is 33% of all reports for this medicine, compared with 1.8% across reports for all cat medicines, so it is reported unusually often with this medicine.

68Reports

10%Marked serious

4.4%Recovered

0.0%Died or euthanised

10 daysTypical onset

How soon it started

Same day

3 23%

1–2 days

0 0.0%

3–7 days

2 15%

1–4 weeks

4 31%

Over a month

4 31%

How the animals did

Recovered

3 4.4%

Still unwell when reported

17 25%

Not known

48 71%

Problems reported at the same time

Didn't work as expected

4 5.9%

Overdose

2 2.9%

Drug administration error

2 2.9%

Blood problems

2 2.9%

Vomiting

2 2.9%

Liver problems

2 2.9%

Weight loss

2 2.9%

Didn't stop fleas

2 2.9%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Epsiprantel cause didn't stop worms in cats?: 68 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 10 days 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).

All reported side effects of Epsiprantel in cats · Medicines most reported with didn't stop worms