Digestive tract disorder after Pyrantel in horses

22 reports to the FDA describe digestive tract disorder in horses given Pyrantel. That is 2.3% of all reports for this medicine, compared with 1.0% across reports for all horse medicines, so it is reported unusually often with this medicine.

22Reports

0.0%Marked serious

9.1%Recovered

27%Died or euthanised

–Typical onset

How the animals did

Recovered

2 9.1%

Died

6 27%

Not known

14 64%

Problems reported at the same time

Abdominal pain

14 64%

Didn't work as expected

11 50%

Death

7 32%

Restlessness or agitation

3 14%

Behaviour change

3 14%

Pain

3 14%

Loss of appetite

2 9.1%

Intestinal torsion

2 9.1%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Pyrantel treats roundworms and hookworms.

Questions owners ask

Can Pyrantel cause digestive tract disorder in horses?: 22 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 horses · Medicines most reported with digestive tract disorder