Omeprazole side effects in horses

1,939 reports sent to the FDA between 2000 and 2026 involve Omeprazole in horses. The most reported problems were gastric ulcer, overdose, loss of appetite. 16% were marked serious.

1,939Reports
16%Marked serious
72%Only medicine involved
19%Recovered
2.4%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

74 3.8%
49 2.5%
34 1.8%
34 1.8%
31 1.6%
31 1.6%
26 1.3%
Abdominal pain
19 1.0%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a horse still getting fleas or heartworm), not about a side effect.

Didn't stop worms
1 0.1%

How soon problems started

Same day
101 6.3%
1–2 days
46 2.9%
3–7 days
41 2.6%
1–4 weeks
559 35%
Over a month
847 53%

Time from the first dose to the first sign, where both dates were reported (1,594 reports).

How the animals did

Recovered
355 18%
Recovered with lasting effects
5 0.3%
Still unwell when reported
588 30%
Died
11 0.6%
Euthanised
35 1.8%
Not known
945 49%

Breeds named most often

Popular breeds appear more often because there are more of them.

Other medicines for horses