Diarrhea after Omeprazole in horses

The FDA has received 31 reports of diarrhea in horses after Omeprazole. That is 1.6% of all reports for this medicine, compared with 4.9% across reports for all horse medicines, so it is reported less often than average with this medicine.

31Reports

61%Marked serious

29%Recovered

29%Died or euthanised

2 daysTypical onset

How soon it started

Same day

6 26%

1–2 days

6 26%

3–7 days

3 13%

1–4 weeks

5 22%

Over a month

3 13%

How the animals did

Recovered

9 29%

Still unwell when reported

2 6.5%

Died

2 6.5%

Euthanised

7 23%

Not known

11 35%

Problems reported at the same time

13 42%

8 26%

7 23%

7 23%

Didn't work as expected

6 19%

Kidney problems

6 19%

Hypoproteinaemia

6 19%

Swelling

5 16%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Omeprazole cause diarrhea in horses?: 31 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).

Diarrhea with similar medicines

Diarrhea after Pergolide 111 reports · 9.0% of its reports
Diarrhea after Ceftiofur 79 reports · 6.5% of its reports
Diarrhea after Flunixin Meglumine 24 reports · 3.9% of its reports
Diarrhea after Oxibendazole 54 reports · 44% of its reports
Diarrhea after Oxybendazole 45 reports · 41% of its reports

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