Blood in stool after Gabapentin in dogs

The FDA has received 104 reports of blood in stool in dogs after Gabapentin. That is 1.2% 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.

104Reports

78%Marked serious

23%Recovered

24%Died or euthanised

5 daysTypical onset

How soon it started

Same day

16 19%

1–2 days

14 17%

3–7 days

18 22%

1–4 weeks

9 11%

Over a month

26 31%

How the animals did

Recovered

24 23%

Still unwell when reported

34 33%

Died

4 3.8%

Euthanised

21 20%

Not known

21 20%

Problems reported at the same time

64 62%

50 48%

46 44%

45 43%

33 32%

28 27%

25 24%

24 23%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Gabapentin used for pain and to reduce stress or anxiety.

Questions owners ask

Can Gabapentin cause blood in stool in dogs?: 104 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 5 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

Blood in stool after Selegiline (Anipryl) 36 reports · 0.9% of its reports
Blood in stool after Trazodone 28 reports · 1.1% of its reports

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