Hiding after Nitenpyram (Capstar) in dogs

49 reports to the FDA describe hiding in dogs given Nitenpyram. That is 0.5% of all reports for this medicine, compared with 0.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

49Reports

18%Marked serious

20%Recovered

8.2%Died or euthanised

Same dayTypical onset

How soon it started

Same day

26 74%

1–2 days

4 11%

3–7 days

3 8.6%

1–4 weeks

2 5.7%

Over a month

0 0.0%

How the animals did

Recovered

10 20%

Still unwell when reported

11 22%

Died

2 4.1%

Euthanised

2 4.1%

Not known

24 49%

Problems reported at the same time

18 37%

17 35%

15 31%

11 22%

9 18%

8 16%

8 16%

Restlessness or agitation

7 14%

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 hiding in dogs?: 49 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).

Hiding with similar medicines

Hiding after Spinosad (Comfortis) 95 reports · 0.2% of its reports
Hiding after Lufenuron + Milbemycin Oxime (Sentinel) 32 reports · 0.1% of its reports
Hiding after Imidacloprid + Moxidectin (Advantage Multi) 110 reports · 0.8% of its reports

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