Wobbliness (ataxia) after Nitenpyram (Capstar) in dogs

219 reports to the FDA describe wobbliness (ataxia) in dogs given Nitenpyram. That is 2.0% of all reports for this medicine, compared with 2.6% across reports for all dog medicines.

219Reports

35%Marked serious

24%Recovered

8.2%Died or euthanised

1 daysTypical onset

How soon it started

Same day

60 45%

1–2 days

42 32%

3–7 days

12 9.1%

1–4 weeks

8 6.1%

Over a month

10 7.6%

How the animals did

Recovered

49 22%

Recovered with lasting effects

4 1.8%

Still unwell when reported

54 25%

Died

11 5.0%

Euthanised

7 3.2%

Not known

94 43%

Problems reported at the same time

91 42%

63 29%

55 25%

51 23%

32 15%

26 12%

21 9.6%

21 9.6%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Nitenpyram kills adult fleas quickly; a single-dose tablet.

Products with this ingredient include Capstar. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Nitenpyram cause wobbliness (ataxia) in dogs?: 219 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 1 day 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).

Wobbliness (ataxia) with similar medicines

Wobbliness (ataxia) after Spinosad (Comfortis) 1,456 reports · 2.6% of its reports
Wobbliness (ataxia) after Lufenuron + Milbemycin Oxime (Sentinel) 504 reports · 1.9% of its reports
Wobbliness (ataxia) after Imidacloprid + Moxidectin (Advantage Multi) 658 reports · 5.0% of its reports
Wobbliness (ataxia) after Lufenuron + Milbemycin Oxime + Praziquantel (Sentinel Spectrum) 167 reports · 1.7% of its reports
Wobbliness (ataxia) after Fipronil + S-methoprene (Frontline Plus) 79 reports · 2.7% of its reports
Wobbliness (ataxia) after Flumethrin + Imidacloprid (Seresto) 45 reports · 2.0% of its reports
Wobbliness (ataxia) after Imidacloprid 61 reports · 3.2% of its reports
Wobbliness (ataxia) after Fipronil 32 reports · 2.3% of its reports
Wobbliness (ataxia) after Lufenuron 27 reports · 2.7% of its reports
Wobbliness (ataxia) after Imidacloprid + Permethrin + Pyriproxyfen 29 reports · 3.9% of its reports

All reported side effects of Nitenpyram in dogs · Medicines most reported with wobbliness (ataxia)