Death after Omeprazole in horses

44 reports to the FDA describe death in horses given Omeprazole. That is 2.3% of all reports for this medicine, compared with 11% across reports for all horse medicines, so it is reported less often than average with this medicine.

44Reports
93%Marked serious
0.0%Recovered
100%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
7 23%
1–2 days
10 32%
3–7 days
5 16%
1–4 weeks
2 6.5%
Over a month
7 23%

How the animals did

Died
9 20%
Euthanised
35 80%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
2
4–7 years
6
8–11 years
4
12+ years
25

About this medicine

Type: medicine.

Questions owners ask

Can Omeprazole cause death in horses?
44 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).

Death with similar medicines

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