Itching after Metronidazole in dogs

138 reports to the FDA describe itching in dogs given Metronidazole. That is 4.5% of all reports for this medicine, compared with 4.3% across reports for all dog medicines.

138Reports
61%Marked serious
24%Recovered
11%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
26 22%
1–2 days
23 19%
3–7 days
14 12%
1–4 weeks
22 18%
Over a month
35 29%

How the animals did

Recovered
30 22%
Recovered with lasting effects
3 2.2%
Still unwell when reported
63 46%
Died
5 3.6%
Euthanised
10 7.2%
Not known
27 20%

Problems reported at the same time

Age of the animals

Under 1 year
24
1–3 years
33
4–7 years
36
8–11 years
21
12+ years
20

About this medicine

Metronidazole treats some bacterial and parasitic gut infections.

Questions owners ask

Can Metronidazole cause itching in dogs?
138 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 7 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).

Itching with similar medicines

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