Diarrhea after Cefazolin in dogs

54 reports to the FDA describe diarrhea in dogs given Cefazolin. That is 13% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

54Reports
85%Marked serious
20%Recovered
48%Died or euthanised
8 daysTypical onset
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How soon it started

Same day
7 15%
1–2 days
13 27%
3–7 days
4 8.3%
1–4 weeks
11 23%
Over a month
13 27%

How the animals did

Recovered
11 20%
Still unwell when reported
10 19%
Died
17 31%
Euthanised
9 17%
Not known
7 13%

Problems reported at the same time

Age of the animals

Under 1 year
11
1–3 years
16
4–7 years
10
8–11 years
16
12+ years
0

About this medicine

Type: medicine.

Questions owners ask

Can Cefazolin cause diarrhea in dogs?
54 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 8 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).

Diarrhea with similar medicines

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