Hair loss after Imidacloprid in cats
The FDA has received 24 reports of hair loss in cats after Imidacloprid. That is 9.5% of all reports for this medicine, compared with 14% across reports for all cat medicines.
24Reports
33%Marked serious
17%Recovered
0.0%Died or euthanised
5 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).
Questions owners ask
- Can Imidacloprid cause hair loss in cats?
- 24 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 5 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).
Hair loss with similar medicines
- Hair loss after Spinosad (Comfortis) 76 reports · 0.7% of its reports
- Hair loss after Nitenpyram (Capstar) 111 reports · 1.3% of its reports
- Hair loss after Imidacloprid + Moxidectin (Advantage Multi) 1,437 reports · 18% of its reports
- Hair loss after Lufenuron 83 reports · 7.5% of its reports
- Hair loss after Flumethrin + Imidacloprid (Seresto) 166 reports · 25% of its reports
- Hair loss after Imidacloprid + Pyriproxyfen 83 reports · 13% of its reports
- Hair loss after Fipronil 34 reports · 6.8% of its reports
- Hair loss after Fipronil + S-methoprene (Frontline Plus) 39 reports · 11% of its reports
All reported side effects of Imidacloprid in cats · Medicines most reported with hair loss