Loss of appetite after Omeprazole in dogs

The FDA has received 372 reports of loss of appetite in dogs after Omeprazole. That is 39% 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.

372Reports
74%Marked serious
14%Recovered
32%Died or euthanised
12 daysTypical onset
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How soon it started

Same day
47 15%
1–2 days
45 14%
3–7 days
35 11%
1–4 weeks
89 29%
Over a month
96 31%

How the animals did

Recovered
50 13%
Recovered with lasting effects
2 0.5%
Still unwell when reported
154 41%
Died
30 8.1%
Euthanised
90 24%
Not known
46 12%

Problems reported at the same time

Age of the animals

Under 1 year
8
1–3 years
49
4–7 years
109
8–11 years
124
12+ years
81

About this medicine

Type: medicine.

Questions owners ask

Can Omeprazole cause loss of appetite in dogs?
372 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 12 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 dogs · Medicines most reported with loss of appetite