Diarrhea after Omeprazole in dogs

The FDA has received 217 reports of diarrhea in dogs after Omeprazole. That is 23% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

217Reports
61%Marked serious
18%Recovered
19%Died or euthanised
11 daysTypical onset
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How soon it started

Same day
22 12%
1–2 days
27 15%
3–7 days
26 15%
1–4 weeks
39 22%
Over a month
63 36%

How the animals did

Recovered
38 18%
Recovered with lasting effects
1 0.5%
Still unwell when reported
109 50%
Died
10 4.6%
Euthanised
31 14%
Not known
28 13%

Problems reported at the same time

Age of the animals

Under 1 year
8
1–3 years
30
4–7 years
61
8–11 years
71
12+ years
45

About this medicine

Type: medicine.

Questions owners ask

Can Omeprazole cause diarrhea in dogs?
217 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 11 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

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