Lethargy after Ceftiofur in horses

114 reports to the FDA describe lethargy in horses given Ceftiofur. That is 9.4% of all reports for this medicine, compared with 7.9% across reports for all horse medicines.

114Reports
38%Marked serious
26%Recovered
22%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
21 27%
1–2 days
21 27%
3–7 days
28 36%
1–4 weeks
7 9.0%
Over a month
1 1.3%

How the animals did

Recovered
29 25%
Recovered with lasting effects
1 0.9%
Still unwell when reported
26 23%
Died
18 16%
Euthanised
7 6.1%
Not known
33 29%

Problems reported at the same time

Age of the animals

Under 1 year
5
1–3 years
20
4–7 years
17
8–11 years
17
12+ years
41

About this medicine

Type: medicine.

Questions owners ask

Can Ceftiofur cause lethargy in horses?
114 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 2 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).

Lethargy with similar medicines

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