Digestive tract disorder after Metronidazole in dogs

The FDA has received 63 reports of digestive tract disorder in dogs after Metronidazole. That is 2.0% of all reports for this medicine, compared with 2.0% across reports for all dog medicines.

63Reports
57%Marked serious
13%Recovered
30%Died or euthanised
12 daysTypical onset
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How soon it started

Same day
9 19%
1–2 days
7 15%
3–7 days
6 13%
1–4 weeks
7 15%
Over a month
18 38%

How the animals did

Recovered
7 11%
Recovered with lasting effects
1 1.6%
Still unwell when reported
26 41%
Died
7 11%
Euthanised
12 19%
Not known
10 16%

Problems reported at the same time

Age of the animals

Under 1 year
8
1–3 years
13
4–7 years
16
8–11 years
18
12+ years
8

About this medicine

Metronidazole treats some bacterial and parasitic gut infections.

Questions owners ask

Can Metronidazole cause digestive tract disorder in dogs?
63 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).

Digestive tract disorder with similar medicines

All reported side effects of Metronidazole in dogs · Medicines most reported with digestive tract disorder