Tremors after Amoxicillin + Clavulanate (Clavamox) in cats

The FDA has received 50 reports of tremors in cats after Amoxicillin + Clavulanate. That is 2.1% of all reports for this medicine, compared with 2.6% across reports for all cat medicines.

50Reports

34%Marked serious

18%Recovered

18%Died or euthanised

2 daysTypical onset

How soon it started

Same day

9 28%

1–2 days

8 25%

3–7 days

11 34%

1–4 weeks

3 9.4%

Over a month

1 3.1%

How the animals did

Recovered

9 18%

Still unwell when reported

10 20%

Died

4 8.0%

Euthanised

5 10%

Not known

22 44%

Problems reported at the same time

17 34%

17 34%

15 30%

11 22%

11 22%

Eye or vision problems

8 16%

Death

8 16%

Breathing problems

7 14%

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.

Products with this combination include Clavamox. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Amoxicillin + Clavulanate cause tremors in cats?: 50 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 2 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 Cefovecin (Convenia) 247 reports · 2.8% of its reports
Tremors after Enrofloxacin (Baytril) 42 reports · 2.7% of its reports

All reported side effects of Amoxicillin + Clavulanate in cats · Medicines most reported with tremors