Didn't prevent heartworm after Gabapentin in dogs

The FDA has received 161 reports of didn't prevent heartworm in dogs after Gabapentin. That is 1.8% of all reports for this medicine, compared with 13% across reports for all dog medicines, so it is reported less often than average with this medicine.

161Reports

38%Marked serious

0.6%Recovered

2.5%Died or euthanised

214 daysTypical onset

How soon it started

Same day

2 3.0%

1–2 days

1 1.5%

3–7 days

0 0.0%

1–4 weeks

4 6.1%

Over a month

59 89%

How the animals did

Recovered

1 0.6%

Still unwell when reported

61 38%

Died

3 1.9%

Euthanised

1 0.6%

Not known

95 59%

Problems reported at the same time

12 7.5%

11 6.8%

11 6.8%

10 6.2%

9 5.6%

8 5.0%

7 4.3%

7 4.3%

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 didn't prevent heartworm in dogs?: 161 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 214 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).

Didn't prevent heartworm with similar medicines

Didn't prevent heartworm after Fluoxetine 45 reports · 1.7% of its reports
Didn't prevent heartworm after Trazodone 153 reports · 6.0% of its reports

All reported side effects of Gabapentin in dogs · Medicines most reported with didn't prevent heartworm