Abdominal pain after Monensin in horses

34 reports to the FDA describe abdominal pain in horses given Monensin. That is 20% 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.

34Reports
0.0%Marked serious
0.0%Recovered
65%Died or euthanised
–Typical onset
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How the animals did

Died
22 65%
Not known
12 35%

Problems reported at the same time

22 65%
Diarrhea
6 18%
Wobbliness (ataxia)
3 8.8%
Recumbency
3 8.8%
Gastric volvulus
3 8.8%
Pr-heart, lesion(s)
2 5.9%
Excessive urination
2 5.9%

Age of the animals

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

About this medicine

Type: medicine.

Questions owners ask

Can Monensin cause abdominal pain in horses?
34 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

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