Allergic reaction after Amoxicillin in dogs

45 reports to the FDA describe allergic reaction in dogs given Amoxicillin. That is 3.3% of all reports for this medicine, compared with 2.3% across reports for all dog medicines.

45Reports

42%Marked serious

24%Recovered

6.7%Died or euthanised

1 daysTypical onset

How soon it started

Same day

11 42%

1–2 days

5 19%

3–7 days

3 12%

1–4 weeks

6 23%

Over a month

1 3.8%

How the animals did

Recovered

10 22%

Recovered with lasting effects

1 2.2%

Still unwell when reported

11 24%

Died

1 2.2%

Euthanised

2 4.4%

Not known

20 44%

Problems reported at the same time

13 29%

13 29%

10 22%

9 20%

7 16%

6 13%

Skin hyperaemia

5 11%

Collapse

5 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 allergic reaction in dogs?: 45 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 1 day 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).

Allergic reaction with similar medicines

Allergic reaction after Amoxicillin + Clavulanate (Clavamox) 185 reports · 3.4% of its reports
Allergic reaction after Doxycycline 93 reports · 2.3% of its reports
Allergic reaction after Cefovecin (Convenia) 314 reports · 8.3% of its reports
Allergic reaction after Enrofloxacin (Baytril) 119 reports · 3.2% of its reports
Allergic reaction after Metronidazole 133 reports · 4.3% of its reports

All reported side effects of Amoxicillin in dogs · Medicines most reported with allergic reaction