Not drinking after Nitenpyram (Capstar) in cats

91 reports to the FDA describe not drinking in cats given Nitenpyram. That is 1.0% of all reports for this medicine, compared with 1.1% across reports for all cat medicines.

91Reports

46%Marked serious

21%Recovered

19%Died or euthanised

Same dayTypical onset

How soon it started

Same day

48 59%

1–2 days

20 25%

3–7 days

1 1.2%

1–4 weeks

4 4.9%

Over a month

8 9.9%

How the animals did

Recovered

19 21%

Still unwell when reported

24 26%

Died

6 6.6%

Euthanised

11 12%

Not known

31 34%

Problems reported at the same time

71 78%

39 43%

23 25%

22 24%

Restlessness or agitation

18 20%

Death

17 19%

Wobbliness (ataxia)

12 13%

Itching

12 13%

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 not drinking in cats?: 91 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).

Not drinking with similar medicines

Not drinking after Spinosad (Comfortis) 75 reports · 0.6% of its reports
Not drinking after Imidacloprid + Moxidectin (Advantage Multi) 34 reports · 0.4% of its reports

All reported side effects of Nitenpyram in cats · Medicines most reported with not drinking