Abdominal pain after Fenbendazole in horses

23 reports to the FDA describe abdominal pain in horses given Fenbendazole. That is 14% of all reports for this medicine, compared with 5.7% across reports for all horse medicines, so it is reported unusually often with this medicine.

23Reports

4.3%Marked serious

4.3%Recovered

30%Died or euthanised

–Typical onset

How the animals did

Recovered

1 4.3%

Died

6 26%

Euthanised

1 4.3%

Not known

15 65%

Problems reported at the same time

Death

7 30%

Diarrhea

5 22%

Lethargy

3 13%

Behaviour change

3 13%

Recumbency

3 13%

Digestive tract disorder

2 8.7%

Allergic reaction

2 8.7%

Hyperhidrosis

2 8.7%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Fenbendazole treats intestinal worms and some other parasites.

Questions owners ask

Can Fenbendazole cause abdominal pain in horses?: 23 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).

Abdominal pain with similar medicines

Abdominal pain after Pyrantel 140 reports · 15% of its reports

All reported side effects of Fenbendazole in horses · Medicines most reported with abdominal pain