Drooling after Nitenpyram (Capstar) in cats

The FDA has received 303 reports of drooling in cats after Nitenpyram. That is 3.5% of all reports for this medicine, compared with 5.6% across reports for all cat medicines, so it is reported less often than average with this medicine.

303Reports
22%Marked serious
34%Recovered
7.6%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
155 70%
1–2 days
34 15%
3–7 days
11 5.0%
1–4 weeks
12 5.4%
Over a month
10 4.5%

How the animals did

Recovered
101 33%
Recovered with lasting effects
1 0.3%
Still unwell when reported
46 15%
Died
18 5.9%
Euthanised
5 1.7%
Not known
132 44%

Problems reported at the same time

Age of the animals

Under 1 year
60
1–3 years
93
4–7 years
68
8–11 years
26
12+ years
43

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 drooling in cats?
303 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).

Drooling with similar medicines

All reported side effects of Nitenpyram in cats · Medicines most reported with drooling