Tremors after Xylazine in horses

20 reports to the FDA describe tremors in horses given Xylazine. That is 4.3% 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.

20Reports

40%Marked serious

35%Recovered

10%Died or euthanised

–Typical onset

How the animals did

Recovered

5 25%

Recovered with lasting effects

2 10%

Died

2 10%

Not known

11 55%

Problems reported at the same time

Hyperhidrosis

6 30%

Didn't work as expected

5 25%

Collapse

4 20%

Nystagmus

3 15%

Seizures

3 15%

Restlessness or agitation

3 15%

Death

2 10%

Hyperexcitation

2 10%

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 Xylazine cause tremors in horses?: 20 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.
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 Ceftiofur 50 reports · 4.1% of its reports
Tremors after Detomidine 40 reports · 4.0% of its reports
Tremors after Flunixin Meglumine 32 reports · 5.1% of its reports

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