Lethargy after Tramadol in dogs

833 reports to the FDA describe lethargy in dogs given Tramadol. That is 22% of all reports for this medicine, compared with 11% across reports for all dog medicines, so it is reported unusually often with this medicine.

833Reports
62%Marked serious
24%Recovered
26%Died or euthanised
9 daysTypical onset
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How soon it started

Same day
96 15%
1–2 days
93 15%
3–7 days
103 16%
1–4 weeks
127 20%
Over a month
207 33%

How the animals did

Recovered
182 22%
Recovered with lasting effects
16 1.9%
Still unwell when reported
311 37%
Died
74 8.9%
Euthanised
145 17%
Not known
105 13%

Problems reported at the same time

Age of the animals

Under 1 year
12
1–3 years
97
4–7 years
210
8–11 years
309
12+ years
196

About this medicine

Type: medicine.

Questions owners ask

Can Tramadol cause lethargy in dogs?
833 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 9 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 Tramadol in dogs · Medicines most reported with lethargy