Weight gain after Amoxicillin + Clavulanate (Clavamox) in dogs

The FDA has received 28 reports of weight gain in dogs after Amoxicillin + Clavulanate. That is 0.5% of all reports for this medicine, compared with 0.6% across reports for all dog medicines.

28Reports

50%Marked serious

0.0%Recovered

18%Died or euthanised

10 daysTypical onset

How soon it started

Same day

3 15%

1–2 days

3 15%

3–7 days

3 15%

1–4 weeks

4 20%

Over a month

7 35%

How the animals did

Still unwell when reported

9 32%

Died

2 7.1%

Euthanised

3 11%

Not known

14 50%

Problems reported at the same time

11 39%

11 39%

9 32%

8 29%

8 29%

8 29%

7 25%

6 21%

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.

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.

Questions owners ask

Can Amoxicillin + Clavulanate cause weight gain in dogs?: 28 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 10 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).

Weight gain with similar medicines

Weight gain after Doxycycline 56 reports · 1.4% of its reports
Weight gain after Cefovecin (Convenia) 21 reports · 0.6% of its reports
Weight gain after Enrofloxacin (Baytril) 26 reports · 0.7% of its reports
Weight gain after Metronidazole 28 reports · 0.9% of its reports

All reported side effects of Amoxicillin + Clavulanate in dogs · Medicines most reported with weight gain