Bruising after Ampicillin in dogs

The FDA has received 29 reports of bruising in dogs after Ampicillin. That is 3.0% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

29Reports
83%Marked serious
10%Recovered
59%Died or euthanised
5 daysTypical onset
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How soon it started

Same day
2 9.1%
1–2 days
6 27%
3–7 days
4 18%
1–4 weeks
6 27%
Over a month
4 18%

How the animals did

Recovered
3 10%
Still unwell when reported
6 21%
Died
4 14%
Euthanised
13 45%
Not known
3 10%

Problems reported at the same time

Age of the animals

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

About this medicine

Type: medicine.

Questions owners ask

Can Ampicillin cause bruising in dogs?
29 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 5 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).

Bruising with similar medicines

All reported side effects of Ampicillin in dogs · Medicines most reported with bruising