Weight loss after Flumethrin + Imidacloprid (Seresto) in cats
35 reports to the FDA describe weight loss in cats given Flumethrin + Imidacloprid. That is 5.2% of all reports for this medicine, compared with 4.6% across reports for all cat medicines.
35Reports
86%Marked serious
20%Recovered
23%Died or euthanised
17 daysTypical onset
Sponsored
How soon it started
How the animals did
Problems reported at the same time
Age of the animals
About this medicine
Imidacloprid kills fleas (spot-on or collar).
Products with this combination include Seresto. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.
Questions owners ask
- Can Flumethrin + Imidacloprid cause weight loss in cats?
- 35 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 17 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).
Weight loss with similar medicines
- Weight loss after Spinosad (Comfortis) 166 reports · 1.4% of its reports
- 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 Imidacloprid + Pyriproxyfen 29 reports · 4.4% of its reports
All reported side effects of Flumethrin + Imidacloprid in cats · Medicines most reported with weight loss