Weight loss after Gabapentin in dogs

412 reports to the FDA describe weight loss in dogs given Gabapentin. That is 4.6% of all reports for this medicine, compared with 1.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

412Reports

78%Marked serious

4.1%Recovered

28%Died or euthanised

25 daysTypical onset

How soon it started

Same day

44 14%

1–2 days

30 9.4%

3–7 days

33 10%

1–4 weeks

71 22%

Over a month

141 44%

How the animals did

Recovered

17 4.1%

Still unwell when reported

188 46%

Died

28 6.8%

Euthanised

86 21%

Not known

93 23%

Problems reported at the same time

234 57%

158 38%

155 38%

131 32%

115 28%

108 26%

96 23%

Didn't work as expected

69 17%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

131

12+ years

139

About this medicine

Gabapentin used for pain and to reduce stress or anxiety.

Questions owners ask

Can Gabapentin cause weight loss in dogs?: 412 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 25 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).

Weight loss with similar medicines

Weight loss after Selegiline (Anipryl) 140 reports · 3.4% of its reports
Weight loss after Fluoxetine 104 reports · 4.0% of its reports
Weight loss after Trazodone 115 reports · 4.5% of its reports
Weight loss after Clomipramine (Clomicalm) 59 reports · 3.9% of its reports

All reported side effects of Gabapentin in dogs · Medicines most reported with weight loss