Tremors after Metronidazole in dogs

202 reports to the FDA describe tremors in dogs given Metronidazole. That is 6.5% of all reports for this medicine, compared with 3.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

202Reports

65%Marked serious

19%Recovered

22%Died or euthanised

4 daysTypical onset

How soon it started

Same day

33 21%

1–2 days

27 17%

3–7 days

31 19%

1–4 weeks

27 17%

Over a month

42 26%

How the animals did

Recovered

35 17%

Recovered with lasting effects

3 1.5%

Still unwell when reported

81 40%

Died

15 7.4%

Euthanised

29 14%

Not known

39 19%

Problems reported at the same time

85 42%

83 41%

80 40%

79 39%

43 21%

40 20%

38 19%

38 19%

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 tremors in dogs?: 202 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 4 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).

Tremors with similar medicines

Tremors after Amoxicillin + Clavulanate (Clavamox) 239 reports · 4.4% of its reports
Tremors after Doxycycline 167 reports · 4.2% of its reports
Tremors after Cefovecin (Convenia) 184 reports · 4.9% of its reports
Tremors after Enrofloxacin (Baytril) 169 reports · 4.5% of its reports
Tremors after Amoxicillin 59 reports · 4.4% of its reports

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