Hyperglycaemia after Ampicillin in cats

The FDA has received 39 reports of hyperglycaemia in cats after Ampicillin. That is 13% of all reports for this medicine, compared with 1.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

39Reports
87%Marked serious
5.1%Recovered
44%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
11 31%
1–2 days
12 34%
3–7 days
3 8.6%
1–4 weeks
5 14%
Over a month
4 11%

How the animals did

Recovered
2 5.1%
Still unwell when reported
16 41%
Died
3 7.7%
Euthanised
14 36%
Not known
4 10%

Problems reported at the same time

20 51%
17 44%
Hyponatremia
13 33%

Age of the animals

Under 1 year
2
1–3 years
2
4–7 years
14
8–11 years
11
12+ years
10

About this medicine

Type: medicine.

Questions owners ask

Can Ampicillin cause hyperglycaemia in cats?
39 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 1 day 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).

Hyperglycaemia with similar medicines

All reported side effects of Ampicillin in cats · Medicines most reported with hyperglycaemia