Lethargy after Medetomidine in dogs

The FDA has received 129 reports of lethargy in dogs after Medetomidine. That is 6.1% of all reports for this medicine, compared with 11% across reports for all dog medicines, so it is reported less often than average with this medicine.

129Reports
8.5%Marked serious
4.7%Recovered
21%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
4 22%
1–2 days
5 28%
3–7 days
4 22%
1–4 weeks
3 17%
Over a month
2 11%

How the animals did

Recovered
6 4.7%
Still unwell when reported
4 3.1%
Died
25 19%
Euthanised
2 1.6%
Not known
92 71%

Problems reported at the same time

Age of the animals

Under 1 year
22
1–3 years
29
4–7 years
36
8–11 years
26
12+ years
11

About this medicine

Type: medicine.

Questions owners ask

Can Medetomidine cause lethargy in dogs?
129 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 Medetomidine in dogs · Medicines most reported with lethargy