Drug dose administration interval too short after Nitenpyram (Capstar) in dogs

72 reports to the FDA describe drug dose administration interval too short in dogs given Nitenpyram. That is 0.7% 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.

72Reports

6.9%Marked serious

4.2%Recovered

2.8%Died or euthanised

Same dayTypical onset

How soon it started

Same day

28 60%

1–2 days

12 26%

3–7 days

2 4.3%

1–4 weeks

4 8.5%

Over a month

1 2.1%

How the animals did

Recovered

3 4.2%

Still unwell when reported

7 9.7%

Died

1 1.4%

Euthanised

1 1.4%

Not known

60 83%

Problems reported at the same time

Didn't stop fleas

62 86%

Overdose

27 38%

Didn't work as expected

7 9.7%

6 8.3%

6 8.3%

4 5.6%

3 4.2%

3 4.2%

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 drug dose administration interval too short in dogs?: 72 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).

Drug dose administration interval too short with similar medicines

Drug dose administration interval too short after Spinosad (Comfortis) 230 reports · 0.4% of its reports
Drug dose administration interval too short after Lufenuron + Milbemycin Oxime (Sentinel) 46 reports · 0.2% of its reports
Drug dose administration interval too short after Imidacloprid + Moxidectin (Advantage Multi) 146 reports · 1.1% of its reports
Drug dose administration interval too short after Lufenuron + Milbemycin Oxime + Praziquantel (Sentinel Spectrum) 32 reports · 0.3% of its reports

All reported side effects of Nitenpyram in dogs · Medicines most reported with drug dose administration interval too short