Xylazine side effects in dogs

251 reports sent to the FDA between 1995 and 2026 involve Xylazine in dogs. The most reported problems were seizures, loss of appetite, vomiting. 37% were marked serious, and where it was recorded, signs eased after stopping the medicine in 67% of cases.

251Reports
37%Marked serious
43%Only medicine involved
33%Recovered
31%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

26 10%
24 9.6%
Apnoea
16 6.4%
Bradycardia
15 6.0%
Lethargy
15 6.0%
Fever
15 6.0%
Breathing problems
12 4.8%
Recovery prolonged
10 4.0%
Cardiac arrest
10 4.0%
Drooling
10 4.0%
Restlessness or agitation
9 3.6%
Sedation prolonged
9 3.6%
Liver problems
9 3.6%
Behaviour change
8 3.2%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't prevent heartworm
1 0.4%

How soon problems started

Same day
87 70%
1–2 days
15 12%
3–7 days
6 4.8%
1–4 weeks
7 5.6%
Over a month
10 8.0%

Time from the first dose to the first sign, where both dates were reported (125 reports).

How the animals did

Recovered
84 33%
Still unwell when reported
15 6.0%
Died
56 22%
Euthanised
22 8.8%
Not known
74 29%

Breeds named most often

Popular breeds appear more often because there are more of them.

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