Death after Penicillin in dogs

The FDA has received 65 reports of death in dogs after Penicillin. That is 26% of all reports for this medicine, compared with 5.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

65Reports
98%Marked serious
0.0%Recovered
100%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
17 30%
1–2 days
10 18%
3–7 days
7 12%
1–4 weeks
12 21%
Over a month
11 19%

How the animals did

Died
43 66%
Euthanised
22 34%

Problems reported at the same time

Age of the animals

Under 1 year
13
1–3 years
11
4–7 years
17
8–11 years
19
12+ years
3

About this medicine

Type: medicine.

Questions owners ask

Can Penicillin cause death in dogs?
65 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 3 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).

Death with similar medicines

All reported side effects of Penicillin in dogs · Medicines most reported with death