Breathing problems after Amoxicillin in dogs

116 reports to the FDA describe breathing problems in dogs given Amoxicillin. That is 8.6% of all reports for this medicine, compared with 2.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

116Reports
78%Marked serious
16%Recovered
42%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
19 22%
1–2 days
12 14%
3–7 days
15 18%
1–4 weeks
19 22%
Over a month
20 24%

How the animals did

Recovered
18 16%
Still unwell when reported
29 25%
Died
23 20%
Euthanised
26 22%
Not known
20 17%

Problems reported at the same time

Age of the animals

Under 1 year
10
1–3 years
13
4–7 years
20
8–11 years
43
12+ years
29

About this medicine

Amoxicillin treats bacterial infections.

Questions owners ask

Can Amoxicillin cause breathing problems in dogs?
116 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 7 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).

Breathing problems with similar medicines

All reported side effects of Amoxicillin in dogs · Medicines most reported with breathing problems