Itching after Amoxicillin + Clavulanate (Clavamox) in cats

The FDA has received 112 reports of itching in cats after Amoxicillin + Clavulanate. That is 4.7% of all reports for this medicine, compared with 8.9% across reports for all cat medicines, so it is reported less often than average with this medicine.

112Reports
38%Marked serious
11%Recovered
8.0%Died or euthanised
6 daysTypical onset
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How soon it started

Same day
17 22%
1–2 days
8 11%
3–7 days
22 29%
1–4 weeks
22 29%
Over a month
7 9.2%

How the animals did

Recovered
12 11%
Still unwell when reported
40 36%
Died
5 4.5%
Euthanised
4 3.6%
Not known
51 46%

Problems reported at the same time

Age of the animals

Under 1 year
18
1–3 years
33
4–7 years
22
8–11 years
21
12+ years
14

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 itching in cats?
112 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 6 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).

Itching with similar medicines

All reported side effects of Amoxicillin + Clavulanate in cats · Medicines most reported with itching