Loose stool after Gabapentin in dogs

The FDA has received 158 reports of loose stool in dogs after Gabapentin. That is 1.8% of all reports for this medicine, compared with 0.9% across reports for all dog medicines, so it is reported unusually often with this medicine.

158Reports

58%Marked serious

18%Recovered

22%Died or euthanised

15 daysTypical onset

How soon it started

Same day

21 18%

1–2 days

15 13%

3–7 days

15 13%

1–4 weeks

16 14%

Over a month

50 43%

How the animals did

Recovered

29 18%

Still unwell when reported

61 39%

Died

11 7.0%

Euthanised

24 15%

Not known

33 21%

Problems reported at the same time

77 49%

55 35%

49 31%

38 24%

34 22%

25 16%

23 15%

22 14%

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 loose stool in dogs?: 158 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 15 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).

Loose stool with similar medicines

Loose stool after Selegiline (Anipryl) 23 reports · 0.6% of its reports
Loose stool after Fluoxetine 24 reports · 0.9% of its reports
Loose stool after Trazodone 47 reports · 1.9% of its reports

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