Sedation prolonged after Fentanyl in dogs

26 reports to the FDA describe sedation prolonged in dogs given Fentanyl. That is 4.1% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

26Reports
27%Marked serious
73%Recovered
12%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
13 68%
1–2 days
0 0.0%
3–7 days
2 11%
1–4 weeks
0 0.0%
Over a month
4 21%

How the animals did

Recovered
18 69%
Recovered with lasting effects
1 3.8%
Died
2 7.7%
Euthanised
1 3.8%
Not known
4 15%

Problems reported at the same time

Age of the animals

Under 1 year
2
1–3 years
5
4–7 years
6
8–11 years
5
12+ years
0

About this medicine

Type: medicine.

Questions owners ask

Can Fentanyl cause sedation prolonged in dogs?
26 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).

Sedation prolonged with similar medicines

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