Death after Xylazine in horses

The FDA has received 58 reports of death in horses after Xylazine. That is 12% of all reports for this medicine, compared with 11% across reports for all horse medicines.

58Reports
64%Marked serious
0.0%Recovered
100%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
27 82%
1–2 days
3 9.1%
3–7 days
2 6.1%
1–4 weeks
0 0.0%
Over a month
1 3.0%

How the animals did

Died
41 71%
Euthanised
17 29%

Problems reported at the same time

19 33%
15 26%
Recumbency
7 12%
Pale mucous membrane
7 12%

Age of the animals

Under 1 year
4
1–3 years
11
4–7 years
7
8–11 years
6
12+ years
23

About this medicine

Type: medicine.

Questions owners ask

Can Xylazine cause death in horses?
58 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).

Death with similar medicines

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