Skin sore after Nitenpyram (Capstar) in dogs

47 reports to the FDA describe skin sore 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.

47Reports
19%Marked serious
6.4%Recovered
2.1%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
11 30%
1–2 days
8 22%
3–7 days
4 11%
1–4 weeks
5 14%
Over a month
9 24%

How the animals did

Recovered
3 6.4%
Still unwell when reported
11 23%
Died
1 2.1%
Not known
32 68%

Problems reported at the same time

Age of the animals

Under 1 year
11
1–3 years
13
4–7 years
14
8–11 years
3
12+ years
1

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 sore in dogs?
47 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 sore with similar medicines

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