Sneezing after Spinosad (Comfortis) in cats

36 reports to the FDA describe sneezing in cats given Spinosad. That is 0.3% of all reports for this medicine, compared with 0.6% across reports for all cat medicines, so it is reported less often than average with this medicine.

36Reports

14%Marked serious

69%Recovered

11%Died or euthanised

2 daysTypical onset

How soon it started

Same day

13 41%

1–2 days

5 16%

3–7 days

10 31%

1–4 weeks

3 9.4%

Over a month

1 3.1%

How the animals did

Recovered

15 42%

Recovered with lasting effects

10 28%

Still unwell when reported

1 2.8%

Died

3 8.3%

Euthanised

1 2.8%

Not known

6 17%

Problems reported at the same time

Drooling

13 36%

Cough

13 36%

Vomiting

10 28%

Nasal discharge

6 17%

5 14%

5 14%

5 14%

4 11%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 sneezing in cats?: 36 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 2 days 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).

Sneezing with similar medicines

Sneezing after Nitenpyram (Capstar) 32 reports · 0.4% of its reports
Sneezing after Imidacloprid + Moxidectin (Advantage Multi) 71 reports · 0.9% of its reports

All reported side effects of Spinosad in cats · Medicines most reported with sneezing