Loss of appetite after Amoxicillin in dogs

The FDA has received 373 reports of loss of appetite in dogs after Amoxicillin. That is 28% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

373Reports
69%Marked serious
11%Recovered
34%Died or euthanised
9 daysTypical onset
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How soon it started

Same day
42 14%
1–2 days
45 15%
3–7 days
55 18%
1–4 weeks
78 26%
Over a month
81 27%

How the animals did

Recovered
41 11%
Recovered with lasting effects
1 0.3%
Still unwell when reported
132 35%
Died
41 11%
Euthanised
86 23%
Not known
72 19%

Problems reported at the same time

Age of the animals

Under 1 year
35
1–3 years
37
4–7 years
86
8–11 years
130
12+ years
81

About this medicine

Amoxicillin treats bacterial infections.

Questions owners ask

Can Amoxicillin cause loss of appetite in dogs?
373 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 9 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).

Loss of appetite with similar medicines

All reported side effects of Amoxicillin in dogs · Medicines most reported with loss of appetite