Weight loss after Spinosad (Comfortis) in cats
The FDA has received 166 reports of weight loss in cats after Spinosad. That is 1.4% of all reports for this medicine, compared with 4.6% across reports for all cat medicines, so it is reported less often than average with this medicine.
166Reports
54%Marked serious
31%Recovered
23%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
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 weight loss in cats?
- 166 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).
Weight loss with similar medicines
- Weight loss after Nitenpyram (Capstar) 99 reports · 1.1% of its reports
- Weight loss after Imidacloprid + Moxidectin (Advantage Multi) 188 reports · 2.3% of its reports
- Weight loss after Lufenuron 53 reports · 4.8% of its reports
- Weight loss after Flumethrin + Imidacloprid (Seresto) 35 reports · 5.2% of its reports
- Weight loss after Imidacloprid + Pyriproxyfen 29 reports · 4.4% of its reports
All reported side effects of Spinosad in cats · Medicines most reported with weight loss