Skin rash or irritation after Nitenpyram (Capstar) in dogs

163 reports to the FDA describe skin rash or irritation in dogs given Nitenpyram. That is 1.5% of all reports for this medicine, compared with 1.3% across reports for all dog medicines.

163Reports

15%Marked serious

8.0%Recovered

4.3%Died or euthanised

2 daysTypical onset

How soon it started

Same day

24 32%

1–2 days

17 22%

3–7 days

13 17%

1–4 weeks

13 17%

Over a month

9 12%

How the animals did

Recovered

12 7.4%

Recovered with lasting effects

1 0.6%

Still unwell when reported

38 23%

Died

5 3.1%

Euthanised

2 1.2%

Not known

105 64%

Problems reported at the same time

72 44%

51 31%

26 16%

24 15%

16 9.8%

15 9.2%

13 8.0%

12 7.4%

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 rash or irritation in dogs?: 163 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 2 days 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 rash or irritation with similar medicines

Skin rash or irritation after Spinosad (Comfortis) 726 reports · 1.3% of its reports
Skin rash or irritation after Lufenuron + Milbemycin Oxime (Sentinel) 344 reports · 1.3% of its reports
Skin rash or irritation after Imidacloprid + Moxidectin (Advantage Multi) 504 reports · 3.8% of its reports
Skin rash or irritation after Lufenuron + Milbemycin Oxime + Praziquantel (Sentinel Spectrum) 45 reports · 0.5% of its reports
Skin rash or irritation after Fipronil + S-methoprene (Frontline Plus) 62 reports · 2.1% of its reports
Skin rash or irritation after Flumethrin + Imidacloprid (Seresto) 103 reports · 4.5% of its reports
Skin rash or irritation after Imidacloprid 44 reports · 2.3% of its reports
Skin rash or irritation after Fipronil 30 reports · 2.1% of its reports
Skin rash or irritation after Lufenuron 60 reports · 5.9% of its reports
Skin rash or irritation after Imidacloprid + Permethrin + Pyriproxyfen 25 reports · 3.4% of its reports

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