Loss of appetite after Cefazolin in dogs

170 reports to the FDA describe loss of appetite in dogs given Cefazolin. That is 40% 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.

170Reports
76%Marked serious
29%Recovered
44%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
35 24%
1–2 days
35 24%
3–7 days
28 19%
1–4 weeks
23 16%
Over a month
26 18%

How the animals did

Recovered
47 28%
Recovered with lasting effects
3 1.8%
Still unwell when reported
29 17%
Died
32 19%
Euthanised
43 25%
Not known
16 9.4%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
36
4–7 years
58
8–11 years
53
12+ years
7

About this medicine

Type: medicine.

Questions owners ask

Can Cefazolin cause loss of appetite in dogs?
170 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).

Loss of appetite with similar medicines

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