Hypoalbuminaemia after Fentanyl in dogs

24 reports to the FDA describe hypoalbuminaemia in dogs given Fentanyl. That is 3.8% of all reports for this medicine, compared with 0.6% across reports for all dog medicines, so it is reported unusually often with this medicine.

24Reports
100%Marked serious
8.3%Recovered
58%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
5 26%
1–2 days
6 32%
3–7 days
1 5.3%
1–4 weeks
4 21%
Over a month
3 16%

How the animals did

Recovered
1 4.2%
Recovered with lasting effects
1 4.2%
Still unwell when reported
7 29%
Died
3 13%
Euthanised
11 46%
Not known
1 4.2%

Problems reported at the same time

Age of the animals

Under 1 year
0
1–3 years
6
4–7 years
11
8–11 years
4
12+ years
3

About this medicine

Type: medicine.

Questions owners ask

Can Fentanyl cause hypoalbuminaemia in dogs?
24 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 2 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).

Hypoalbuminaemia with similar medicines

All reported side effects of Fentanyl in dogs · Medicines most reported with hypoalbuminaemia