Itching after Spinosad (Comfortis) in cats
The FDA has received 439 reports of itching in cats after Spinosad. That is 3.8% of all reports for this medicine, compared with 8.9% across reports for all cat medicines, so it is reported less often than average with this medicine.
439Reports
16%Marked serious
44%Recovered
3.2%Died or euthanised
Same dayTypical onset
Sponsored
How soon it started
How the animals did
Problems reported at the same time
Age of the animals
About this medicine
Spinosad kills fleas; monthly chewable.
Products with this ingredient include Comfortis. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.
Questions owners ask
- Can Spinosad cause itching in cats?
- 439 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).
Itching with similar medicines
- Itching after Nitenpyram (Capstar) 1,904 reports · 22% of its reports
- Itching after Imidacloprid + Moxidectin (Advantage Multi) 1,531 reports · 19% of its reports
- Itching after Lufenuron 84 reports · 7.6% of its reports
- Itching after Flumethrin + Imidacloprid (Seresto) 210 reports · 31% of its reports
- Itching after Imidacloprid + Pyriproxyfen 222 reports · 34% of its reports
- Itching after Fipronil 63 reports · 13% of its reports
- Itching after Fipronil + S-methoprene (Frontline Plus) 68 reports · 19% of its reports
- Itching after Imidacloprid 42 reports · 17% of its reports
All reported side effects of Spinosad in cats · Medicines most reported with itching