Vomiting after Nitenpyram (Capstar) in dogs

1,204 reports to the FDA describe vomiting in dogs given Nitenpyram. That is 11% of all reports for this medicine, compared with 28% across reports for all dog medicines, so it is reported less often than average with this medicine.

1,204Reports

22%Marked serious

31%Recovered

7.2%Died or euthanised

1 daysTypical onset

How soon it started

Same day

389 49%

1–2 days

231 29%

3–7 days

63 7.9%

1–4 weeks

59 7.4%

Over a month

51 6.4%

How the animals did

Recovered

373 31%

Recovered with lasting effects

4 0.3%

Still unwell when reported

201 17%

Died

69 5.7%

Euthanised

18 1.5%

Not known

539 45%

Problems reported at the same time

387 32%

334 28%

331 27%

100 8.3%

96 8.0%

90 7.5%

87 7.2%

59 4.9%

Age of the animals

Under 1 year

260

1–3 years

343

4–7 years

280

8–11 years

166

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 vomiting in dogs?: 1,204 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).

Vomiting with similar medicines

Vomiting after Spinosad (Comfortis) 30,909 reports · 54% of its reports
Vomiting after Lufenuron + Milbemycin Oxime (Sentinel) 4,725 reports · 18% of its reports
Vomiting after Imidacloprid + Moxidectin (Advantage Multi) 1,904 reports · 15% of its reports
Vomiting after Lufenuron + Milbemycin Oxime + Praziquantel (Sentinel Spectrum) 1,925 reports · 19% of its reports
Vomiting after Fipronil + S-methoprene (Frontline Plus) 627 reports · 21% of its reports
Vomiting after Flumethrin + Imidacloprid (Seresto) 295 reports · 13% of its reports
Vomiting after Imidacloprid 251 reports · 13% of its reports
Vomiting after Fipronil 417 reports · 30% of its reports
Vomiting after Lufenuron 325 reports · 32% of its reports
Vomiting after Imidacloprid + Permethrin + Pyriproxyfen 116 reports · 16% of its reports

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