Vomiting after Metronidazole in dogs

1,234 reports to the FDA describe vomiting in dogs given Metronidazole. That is 40% of all reports for this medicine, compared with 28% across reports for all dog medicines.

1,234Reports
55%Marked serious
32%Recovered
21%Died or euthanised
6 daysTypical onset
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How soon it started

Same day
242 23%
1–2 days
168 16%
3–7 days
145 14%
1–4 weeks
183 18%
Over a month
293 28%

How the animals did

Recovered
389 32%
Recovered with lasting effects
9 0.7%
Still unwell when reported
420 34%
Died
100 8.1%
Euthanised
158 13%
Not known
158 13%

Problems reported at the same time

Age of the animals

Under 1 year
210
1–3 years
260
4–7 years
285
8–11 years
291
12+ years
184

About this medicine

Metronidazole treats some bacterial and parasitic gut infections.

Questions owners ask

Can Metronidazole cause vomiting in dogs?
1,234 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 6 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).

Vomiting with similar medicines

All reported side effects of Metronidazole in dogs · Medicines most reported with vomiting