Vomiting after Amoxicillin in cats

132 reports to the FDA describe vomiting in cats given Amoxicillin. That is 26% of all reports for this medicine, compared with 18% across reports for all cat medicines.

132Reports

30%Marked serious

19%Recovered

17%Died or euthanised

2 daysTypical onset

How soon it started

Same day

23 34%

1–2 days

16 24%

3–7 days

6 8.8%

1–4 weeks

17 25%

Over a month

6 8.8%

How the animals did

Recovered

25 19%

Still unwell when reported

15 11%

Died

17 13%

Euthanised

5 3.8%

Not known

70 53%

Problems reported at the same time

47 36%

39 30%

24 18%

21 16%

17 13%

14 11%

13 9.8%

11 8.3%

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 vomiting in cats?: 132 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).

Vomiting with similar medicines

Vomiting after Cefovecin (Convenia) 1,400 reports · 16% of its reports
Vomiting after Amoxicillin + Clavulanate (Clavamox) 683 reports · 29% of its reports
Vomiting after Enrofloxacin (Baytril) 150 reports · 9.5% of its reports
Vomiting after Metronidazole 79 reports · 20% of its reports
Vomiting after Doxycycline 38 reports · 15% of its reports

All reported side effects of Amoxicillin in cats · Medicines most reported with vomiting