Tarry or black stool after Tramadol in dogs

48 reports to the FDA describe tarry or black stool in dogs given Tramadol. That is 1.3% 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.

48Reports

67%Marked serious

21%Recovered

31%Died or euthanised

13 daysTypical onset

How soon it started

Same day

3 8.8%

1–2 days

3 8.8%

3–7 days

10 29%

1–4 weeks

9 26%

Over a month

9 26%

How the animals did

Recovered

10 21%

Still unwell when reported

19 40%

Died

2 4.2%

Euthanised

13 27%

Not known

4 8.3%

Problems reported at the same time

29 60%

28 58%

20 42%

18 38%

17 35%

15 31%

13 27%

11 23%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Tramadol cause tarry or black stool in dogs?: 48 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 13 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).

Tarry or black stool with similar medicines

Tarry or black stool after Polysulfated Glycosaminoglycan 26 reports · 0.5% of its reports
Tarry or black stool after Butorphanol 24 reports · 0.5% of its reports
Tarry or black stool after Famotidine 56 reports · 2.1% of its reports
Tarry or black stool after Sucralfate 58 reports · 5.9% of its reports
Tarry or black stool after Omeprazole 22 reports · 2.3% of its reports

All reported side effects of Tramadol in dogs · Medicines most reported with tarry or black stool