Loss of appetite after Omeprazole in horses

The FDA has received 71 reports of loss of appetite in horses after Omeprazole. That is 3.7% of all reports for this medicine, compared with 9.2% across reports for all horse medicines, so it is reported less often than average with this medicine.

71Reports
51%Marked serious
25%Recovered
11%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
11 26%
1–2 days
14 33%
3–7 days
4 9.3%
1–4 weeks
7 16%
Over a month
7 16%

How the animals did

Recovered
17 24%
Recovered with lasting effects
1 1.4%
Still unwell when reported
6 8.5%
Died
1 1.4%
Euthanised
7 9.9%
Not known
39 55%

Problems reported at the same time

Age of the animals

Under 1 year
4
1–3 years
8
4–7 years
12
8–11 years
12
12+ years
24

About this medicine

Type: medicine.

Questions owners ask

Can Omeprazole cause loss of appetite in horses?
71 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 2 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).

Loss of appetite with similar medicines

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