Breathing problems after Nitenpyram (Capstar) in dogs

472 reports to the FDA describe breathing problems in dogs given Nitenpyram. That is 4.4% of all reports for this medicine, compared with 2.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

472Reports

26%Marked serious

32%Recovered

11%Died or euthanised

Same dayTypical onset

How soon it started

Same day

244 65%

1–2 days

59 16%

3–7 days

14 3.7%

1–4 weeks

23 6.1%

Over a month

34 9.1%

How the animals did

Recovered

147 31%

Recovered with lasting effects

2 0.4%

Still unwell when reported

88 19%

Died

39 8.3%

Euthanised

15 3.2%

Not known

181 38%

Problems reported at the same time

Restlessness or agitation

139 29%

131 28%

110 23%

73 15%

73 15%

59 13%

55 12%

53 11%

Age of the animals

Under 1 year

1–3 years

138

4–7 years

129

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 breathing problems in dogs?: 472 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 the same 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).

Breathing problems with similar medicines

Breathing problems after Spinosad (Comfortis) 748 reports · 1.3% of its reports
Breathing problems after Lufenuron + Milbemycin Oxime (Sentinel) 393 reports · 1.5% of its reports
Breathing problems after Imidacloprid + Moxidectin (Advantage Multi) 499 reports · 3.8% of its reports
Breathing problems after Lufenuron + Milbemycin Oxime + Praziquantel (Sentinel Spectrum) 137 reports · 1.4% of its reports
Breathing problems after Fipronil + S-methoprene (Frontline Plus) 132 reports · 4.5% of its reports
Breathing problems after Flumethrin + Imidacloprid (Seresto) 73 reports · 3.2% of its reports
Breathing problems after Imidacloprid 54 reports · 2.8% of its reports
Breathing problems after Fipronil 64 reports · 4.5% of its reports
Breathing problems after Imidacloprid + Permethrin + Pyriproxyfen 34 reports · 4.6% of its reports
Breathing problems after Cyphenothrin + Fipronil + S-methoprene 51 reports · 7.9% of its reports

All reported side effects of Nitenpyram in dogs · Medicines most reported with breathing problems