Vocalising after Cefazolin in dogs

The FDA has received 44 reports of vocalising in dogs after Cefazolin. That is 10% of all reports for this medicine, compared with 1.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

44Reports
59%Marked serious
48%Recovered
23%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
12 30%
1–2 days
16 40%
3–7 days
3 7.5%
1–4 weeks
2 5.0%
Over a month
7 18%

How the animals did

Recovered
21 48%
Still unwell when reported
7 16%
Died
6 14%
Euthanised
4 9.1%
Not known
6 14%

Problems reported at the same time

Age of the animals

Under 1 year
5
1–3 years
10
4–7 years
12
8–11 years
14
12+ years
1

About this medicine

Type: medicine.

Questions owners ask

Can Cefazolin cause vocalising in dogs?
44 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).

Vocalising with similar medicines

All reported side effects of Cefazolin in dogs · Medicines most reported with vocalising