Loss of appetite after Monensin in horses

25 reports to the FDA describe loss of appetite in horses given Monensin. That is 15% of all reports for this medicine, compared with 9.2% across reports for all horse medicines, so it is reported unusually often with this medicine.

25Reports
0.0%Marked serious
4.0%Recovered
68%Died or euthanised
–Typical onset
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How the animals did

Recovered
1 4.0%
Died
17 68%
Not known
7 28%

Problems reported at the same time

17 68%
Lethargy
12 48%
Wobbliness (ataxia)
6 24%
Inappropriate preparation of medication
5 20%
Diarrhea
4 16%
Recumbency
4 16%
Loose stool
3 12%

Age of the animals

Under 1 year
0
1–3 years
0
4–7 years
3
8–11 years
1
12+ years
2

About this medicine

Type: medicine.

Questions owners ask

Can Monensin cause loss of appetite in horses?
25 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).

Loss of appetite with similar medicines

All reported side effects of Monensin in horses · Medicines most reported with loss of appetite