Tremors after Ceftiofur in horses

The FDA has received 50 reports of tremors in horses after Ceftiofur. That is 4.1% of all reports for this medicine, compared with 2.2% across reports for all horse medicines, so it is reported unusually often with this medicine.

50Reports

64%Marked serious

48%Recovered

16%Died or euthanised

Same dayTypical onset

How soon it started

Same day

26 65%

1–2 days

4 10%

3–7 days

6 15%

1–4 weeks

4 10%

Over a month

0 0.0%

How the animals did

Recovered

23 46%

Recovered with lasting effects

1 2.0%

Still unwell when reported

9 18%

Died

7 14%

Euthanised

1 2.0%

Not known

9 18%

Problems reported at the same time

Injection site reaction

20 40%

16 32%

13 26%

10 20%

10 20%

Restlessness or agitation

9 18%

Death

8 16%

Collapse

8 16%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Ceftiofur cause tremors in horses?: 50 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 the same 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).

Tremors with similar medicines

Tremors after Detomidine 40 reports · 4.0% of its reports
Tremors after Flunixin Meglumine 32 reports · 5.1% of its reports
Tremors after Xylazine 20 reports · 4.3% of its reports

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