Skin irritation after Nitenpyram (Capstar) in dogs

45 reports to the FDA describe skin irritation in dogs given Nitenpyram. That is 0.4% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

45Reports

22%Marked serious

13%Recovered

0.0%Died or euthanised

1 daysTypical onset

How soon it started

Same day

15 36%

1–2 days

12 29%

3–7 days

6 14%

1–4 weeks

7 17%

Over a month

2 4.8%

How the animals did

Recovered

6 13%

Still unwell when reported

9 20%

Not known

30 67%

Problems reported at the same time

Itching

26 58%

Reddening of the skin

23 51%

16 36%

8 18%

6 13%

6 13%

5 11%

5 11%

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 skin irritation in dogs?: 45 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).

Skin irritation with similar medicines

Skin irritation after Spinosad (Comfortis) 29 reports · 0.1% of its reports
Skin irritation after Imidacloprid + Moxidectin (Advantage Multi) 46 reports · 0.4% of its reports

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