Weight gain after Flumethrin + Imidacloprid (Seresto) in dogs
36 reports to the FDA describe weight gain in dogs given Flumethrin + Imidacloprid. That is 1.6% of all reports for this medicine, compared with 0.6% across reports for all dog medicines, so it is reported unusually often with this medicine.
36Reports
44%Marked serious
14%Recovered
2.8%Died or euthanised
31 daysTypical onset
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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 gain in dogs?
- 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 31 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 gain with similar medicines
- Weight gain after Spinosad (Comfortis) 306 reports · 0.5% of its reports
- Weight gain after Lufenuron + Milbemycin Oxime (Sentinel) 83 reports · 0.3% of its reports
- Weight gain after Imidacloprid + Moxidectin (Advantage Multi) 193 reports · 1.5% of its reports
- Weight gain after Nitenpyram (Capstar) 23 reports · 0.2% of its reports
All reported side effects of Flumethrin + Imidacloprid in dogs · Medicines most reported with weight gain