Leucocytosis after Nitenpyram (Capstar) in cats
The FDA has received 28 reports of leucocytosis in cats after Nitenpyram. That is 0.3% of all reports for this medicine, compared with 0.9% across reports for all cat medicines, so it is reported less often than average with this medicine.
28Reports
57%Marked serious
14%Recovered
21%Died or euthanised
1 daysTypical onset
Sponsored
How soon it started
How the animals did
Problems reported at the same time
Age of the animals
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 leucocytosis in cats?
- 28 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 1 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).
Leucocytosis with similar medicines
- Leucocytosis after Spinosad (Comfortis) 29 reports · 0.3% of its reports
- Leucocytosis after Imidacloprid + Moxidectin (Advantage Multi) 24 reports · 0.3% of its reports
- Leucocytosis after Lufenuron 24 reports · 2.2% of its reports
All reported side effects of Nitenpyram in cats · Medicines most reported with leucocytosis