Behaviour change after Imidacloprid in cats
26 reports to the FDA describe behaviour change in cats given Imidacloprid. That is 10% of all reports for this medicine, compared with 5.4% across reports for all cat medicines, so it is reported unusually often with this medicine.
26Reports
19%Marked serious
35%Recovered
3.8%Died or euthanised
13 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).
Questions owners ask
- Can Imidacloprid cause behaviour change in cats?
- 26 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 13 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).
Behaviour change with similar medicines
- Behaviour change after Spinosad (Comfortis) 359 reports · 3.1% of its reports
- Behaviour change after Nitenpyram (Capstar) 564 reports · 6.5% of its reports
- Behaviour change after Imidacloprid + Moxidectin (Advantage Multi) 1,057 reports · 13% of its reports
- Behaviour change after Lufenuron 24 reports · 2.2% of its reports
- Behaviour change after Flumethrin + Imidacloprid (Seresto) 68 reports · 10% of its reports
- Behaviour change after Imidacloprid + Pyriproxyfen 80 reports · 12% of its reports
- Behaviour change after Fipronil + S-methoprene (Frontline Plus) 23 reports · 6.3% of its reports
All reported side effects of Imidacloprid in cats · Medicines most reported with behaviour change