Lethargy after Alfaxalone in dogs

40 reports to the FDA describe lethargy in dogs given Alfaxalone. That is 8.1% of all reports for this medicine, compared with 11% across reports for all dog medicines.

40Reports
73%Marked serious
13%Recovered
15%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
8 22%
1–2 days
8 22%
3–7 days
10 27%
1–4 weeks
10 27%
Over a month
1 2.7%

How the animals did

Recovered
5 13%
Still unwell when reported
22 55%
Died
2 5.0%
Euthanised
4 10%
Not known
7 18%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
12
4–7 years
6
8–11 years
15
12+ years
4

About this medicine

Type: medicine.

Questions owners ask

Can Alfaxalone cause lethargy in dogs?
40 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 3 days 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).

Lethargy with similar medicines

All reported side effects of Alfaxalone in dogs · Medicines most reported with lethargy