Abnormal ultrasound finding after Amoxicillin in dogs

85 reports to the FDA describe abnormal ultrasound finding in dogs given Amoxicillin. That is 6.3% of all reports for this medicine, compared with 0.5% across reports for all dog medicines, so it is reported unusually often with this medicine.

85Reports

79%Marked serious

11%Recovered

41%Died or euthanised

11 daysTypical onset

How soon it started

Same day

9 13%

1–2 days

6 8.5%

3–7 days

14 20%

1–4 weeks

24 34%

Over a month

18 25%

How the animals did

Recovered

9 11%

Still unwell when reported

34 40%

Died

8 9.4%

Euthanised

27 32%

Not known

7 8.2%

Problems reported at the same time

58 68%

54 64%

49 58%

47 55%

35 41%

33 39%

28 33%

20 24%

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 abnormal ultrasound finding in dogs?: 85 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 11 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).

Abnormal ultrasound finding with similar medicines

Abnormal ultrasound finding after Amoxicillin + Clavulanate (Clavamox) 192 reports · 3.6% of its reports
Abnormal ultrasound finding after Doxycycline 104 reports · 2.6% of its reports
Abnormal ultrasound finding after Cefovecin (Convenia) 76 reports · 2.0% of its reports
Abnormal ultrasound finding after Enrofloxacin (Baytril) 141 reports · 3.7% of its reports
Abnormal ultrasound finding after Metronidazole 182 reports · 5.9% of its reports

All reported side effects of Amoxicillin in dogs · Medicines most reported with abnormal ultrasound finding