Fever after Ceftiofur in horses

The FDA has received 206 reports of fever in horses after Ceftiofur. That is 17% of all reports for this medicine, compared with 4.8% across reports for all horse medicines, so it is reported unusually often with this medicine.

206Reports
39%Marked serious
34%Recovered
20%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
26 17%
1–2 days
41 27%
3–7 days
65 43%
1–4 weeks
17 11%
Over a month
3 2.0%

How the animals did

Recovered
63 31%
Recovered with lasting effects
7 3.4%
Still unwell when reported
49 24%
Died
31 15%
Euthanised
10 4.9%
Not known
46 22%

Problems reported at the same time

Age of the animals

Under 1 year
11
1–3 years
47
4–7 years
32
8–11 years
23
12+ years
72

About this medicine

Type: medicine.

Questions owners ask

Can Ceftiofur cause fever in horses?
206 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 4 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).

Fever with similar medicines

All reported side effects of Ceftiofur in horses · Medicines most reported with fever