Amoxicillin + Clavulanate (Clavamox) side effects in dogs

5,376 reports sent to the FDA between 1995 and 2026 involve Amoxicillin + Clavulanate in dogs. The most reported problems were vomiting, loss of appetite, lethargy. 33% were marked serious, and where it was recorded, signs eased after stopping the medicine in 61% of cases.

5,376Reports
33%Marked serious
42%Only medicine involved
14%Recovered
16%Died or euthanised
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About this medicine

Amoxicillin treats bacterial infections.

Products with this combination include Clavamox. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Most reported side effects

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't stop ticks
6 0.1%
Didn't stop mites
1 0.0%

How soon problems started

Same day
543 18%
1–2 days
499 16%
3–7 days
525 17%
1–4 weeks
748 25%
Over a month
738 24%

Time from the first dose to the first sign, where both dates were reported (3,053 reports).

How the animals did

Recovered
741 14%
Recovered with lasting effects
30 0.6%
Still unwell when reported
1,549 29%
Died
551 10%
Euthanised
300 5.6%
Not known
2,205 41%

Breeds named most often

Popular breeds appear more often because there are more of them.

Other antibiotics for dogs