Death after Amoxicillin in cats

The FDA has received 112 reports of death in cats after Amoxicillin. That is 22% of all reports for this medicine, compared with 8.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

112Reports

66%Marked serious

0.0%Recovered

99%Died or euthanised

2 daysTypical onset

How soon it started

Same day

13 20%

1–2 days

21 32%

3–7 days

9 14%

1–4 weeks

17 26%

Over a month

6 9.1%

How the animals did

Died

82 73%

Euthanised

29 26%

Not known

1 0.9%

Problems reported at the same time

33 29%

25 22%

21 19%

15 13%

14 13%

14 13%

13 12%

Hypothermia

12 11%

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 death in cats?: 112 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).

Death with similar medicines

Death after Cefovecin (Convenia) 1,898 reports · 22% of its reports
Death after Amoxicillin + Clavulanate (Clavamox) 372 reports · 16% of its reports
Death after Enrofloxacin (Baytril) 272 reports · 17% of its reports
Death after Metronidazole 67 reports · 17% of its reports
Death after Doxycycline 74 reports · 29% of its reports

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