Alfaxalone side effects in dogs

495 reports sent to the FDA between 2013 and 2026 involve Alfaxalone in dogs. The most reported problems were seizures, vomiting, swelling. 68% were marked serious, and where it was recorded, signs eased after stopping the medicine in 50% of cases.

495Reports
68%Marked serious
5.9%Only medicine involved
54%Recovered
18%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

68 14%
56 11%
52 11%
44 8.9%
40 8.1%
39 7.9%
35 7.1%
35 7.1%
31 6.3%
29 5.9%

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 0.2%

How soon problems started

Same day
312 71%
1–2 days
46 11%
3–7 days
36 8.2%
1–4 weeks
24 5.5%
Over a month
20 4.6%

Time from the first dose to the first sign, where both dates were reported (438 reports).

How the animals did

Recovered
260 53%
Recovered with lasting effects
6 1.2%
Still unwell when reported
91 18%
Died
76 15%
Euthanised
13 2.6%
Not known
49 9.9%

Breeds named most often

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

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