Blood in stool after Tramadol in dogs

The FDA has received 61 reports of blood in stool in dogs after Tramadol. That is 1.6% 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.

61Reports
70%Marked serious
25%Recovered
33%Died or euthanised
8 daysTypical onset
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How soon it started

Same day
5 10%
1–2 days
7 14%
3–7 days
12 24%
1–4 weeks
13 26%
Over a month
13 26%

How the animals did

Recovered
13 21%
Recovered with lasting effects
2 3.3%
Still unwell when reported
22 36%
Died
9 15%
Euthanised
11 18%
Not known
4 6.6%

Problems reported at the same time

Age of the animals

Under 1 year
0
1–3 years
8
4–7 years
19
8–11 years
23
12+ years
11

About this medicine

Type: medicine.

Questions owners ask

Can Tramadol cause blood in stool in dogs?
61 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 8 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).

Blood in stool with similar medicines

All reported side effects of Tramadol in dogs · Medicines most reported with blood in stool