Pale mucous membrane after Nitenpyram (Capstar) in dogs

44 reports to the FDA describe pale mucous membrane in dogs given Nitenpyram. That is 0.4% of all reports for this medicine, compared with 0.7% across reports for all dog medicines, so it is reported less often than average with this medicine.

44Reports
66%Marked serious
16%Recovered
30%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
14 54%
1–2 days
6 23%
3–7 days
1 3.8%
1–4 weeks
0 0.0%
Over a month
5 19%

How the animals did

Recovered
6 14%
Recovered with lasting effects
1 2.3%
Still unwell when reported
8 18%
Died
12 27%
Euthanised
1 2.3%
Not known
16 36%

Problems reported at the same time

Age of the animals

Under 1 year
14
1–3 years
10
4–7 years
6
8–11 years
6
12+ years
7

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 pale mucous membrane in dogs?
44 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).

Pale mucous membrane with similar medicines

All reported side effects of Nitenpyram in dogs · Medicines most reported with pale mucous membrane