Wobbliness (ataxia) after Amoxicillin in dogs

74 reports to the FDA describe wobbliness (ataxia) in dogs given Amoxicillin. That is 5.5% of all reports for this medicine, compared with 2.6% across reports for all dog medicines, so it is reported unusually often with this medicine.

74Reports

55%Marked serious

14%Recovered

28%Died or euthanised

5 daysTypical onset

How soon it started

Same day

10 20%

1–2 days

8 16%

3–7 days

9 18%

1–4 weeks

12 24%

Over a month

10 20%

How the animals did

Recovered

10 14%

Still unwell when reported

29 39%

Died

10 14%

Euthanised

11 15%

Not known

14 19%

Problems reported at the same time

27 36%

21 28%

21 28%

19 26%

17 23%

16 22%

15 20%

13 18%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Amoxicillin treats bacterial infections.

Questions owners ask

Can Amoxicillin cause wobbliness (ataxia) in dogs?: 74 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 5 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).

Wobbliness (ataxia) with similar medicines

Wobbliness (ataxia) after Amoxicillin + Clavulanate (Clavamox) 280 reports · 5.2% of its reports
Wobbliness (ataxia) after Doxycycline 154 reports · 3.8% of its reports
Wobbliness (ataxia) after Cefovecin (Convenia) 188 reports · 5.0% of its reports
Wobbliness (ataxia) after Enrofloxacin (Baytril) 280 reports · 7.4% of its reports
Wobbliness (ataxia) after Metronidazole 160 reports · 5.2% of its reports

All reported side effects of Amoxicillin in dogs · Medicines most reported with wobbliness (ataxia)