Excessive urination after Gabapentin in dogs

The FDA has received 377 reports of excessive urination in dogs after Gabapentin. That is 4.2% of all reports for this medicine, compared with 1.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

377Reports

59%Marked serious

9.5%Recovered

15%Died or euthanised

24 daysTypical onset

How soon it started

Same day

44 15%

1–2 days

23 7.8%

3–7 days

33 11%

1–4 weeks

73 25%

Over a month

121 41%

How the animals did

Recovered

35 9.3%

Recovered with lasting effects

1 0.3%

Still unwell when reported

228 60%

Died

13 3.4%

Euthanised

43 11%

Not known

57 15%

Problems reported at the same time

317 84%

98 26%

85 23%

69 18%

65 17%

65 17%

56 15%

Decreased urine concentration

54 14%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

134

12+ years

190

About this medicine

Gabapentin used for pain and to reduce stress or anxiety.

Questions owners ask

Can Gabapentin cause excessive urination in dogs?: 377 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 24 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).

Excessive urination with similar medicines

Excessive urination after Selegiline (Anipryl) 158 reports · 3.8% of its reports
Excessive urination after Fluoxetine 40 reports · 1.5% of its reports
Excessive urination after Trazodone 70 reports · 2.8% of its reports
Excessive urination after Clomipramine (Clomicalm) 45 reports · 3.0% of its reports

All reported side effects of Gabapentin in dogs · Medicines most reported with excessive urination