Abnormal radiograph finding after Metronidazole in dogs

The FDA has received 173 reports of abnormal radiograph finding in dogs after Metronidazole. That is 5.6% of all reports for this medicine, compared with 0.9% across reports for all dog medicines, so it is reported unusually often with this medicine.

173Reports

80%Marked serious

8.7%Recovered

43%Died or euthanised

6 daysTypical onset

How soon it started

Same day

22 16%

1–2 days

28 20%

3–7 days

24 17%

1–4 weeks

29 21%

Over a month

36 26%

How the animals did

Recovered

13 7.5%

Recovered with lasting effects

2 1.2%

Still unwell when reported

68 39%

Died

21 12%

Euthanised

54 31%

Not known

15 8.7%

Problems reported at the same time

92 53%

87 50%

84 49%

80 46%

79 46%

75 43%

52 30%

48 28%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Metronidazole treats some bacterial and parasitic gut infections.

Questions owners ask

Can Metronidazole cause abnormal radiograph finding in dogs?: 173 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).

Abnormal radiograph finding with similar medicines

Abnormal radiograph finding after Amoxicillin + Clavulanate (Clavamox) 274 reports · 5.1% of its reports
Abnormal radiograph finding after Doxycycline 206 reports · 5.1% of its reports
Abnormal radiograph finding after Cefovecin (Convenia) 151 reports · 4.0% of its reports
Abnormal radiograph finding after Enrofloxacin (Baytril) 178 reports · 4.7% of its reports
Abnormal radiograph finding after Amoxicillin 74 reports · 5.5% of its reports

All reported side effects of Metronidazole in dogs · Medicines most reported with abnormal radiograph finding