Cyanosis after Alfaxalone in dogs

The FDA has received 25 reports of cyanosis in dogs after Alfaxalone. That is 5.1% of all reports for this medicine, compared with 0.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

25Reports
100%Marked serious
40%Recovered
56%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
20 91%
1–2 days
1 4.5%
3–7 days
1 4.5%
1–4 weeks
0 0.0%
Over a month
0 0.0%

How the animals did

Recovered
9 36%
Recovered with lasting effects
1 4.0%
Still unwell when reported
1 4.0%
Died
13 52%
Euthanised
1 4.0%

Problems reported at the same time

14 56%
4 16%
Respiratory arrest
3 12%
Cardiorespiratory arrest
3 12%

Age of the animals

Under 1 year
0
1–3 years
2
4–7 years
5
8–11 years
12
12+ years
5

About this medicine

Type: medicine.

Questions owners ask

Can Alfaxalone cause cyanosis in dogs?
25 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).

Cyanosis with similar medicines

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