Lethargy after Gentamicin in dogs

47 reports to the FDA describe lethargy in dogs given Gentamicin. That is 21% of all reports for this medicine, compared with 11% across reports for all dog medicines, so it is reported unusually often with this medicine.

47Reports
70%Marked serious
15%Recovered
28%Died or euthanised
14 daysTypical onset
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How soon it started

Same day
5 12%
1–2 days
7 16%
3–7 days
6 14%
1–4 weeks
9 21%
Over a month
16 37%

How the animals did

Recovered
7 15%
Still unwell when reported
14 30%
Died
8 17%
Euthanised
5 11%
Not known
13 28%

Problems reported at the same time

25 53%
13 28%
Blood problems
10 21%

Age of the animals

Under 1 year
3
1–3 years
10
4–7 years
17
8–11 years
8
12+ years
8

About this medicine

Type: medicine.

Questions owners ask

Can Gentamicin cause lethargy in dogs?
47 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 14 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 Gentamicin in dogs · Medicines most reported with lethargy