Itching after Fipronil in dogs

The FDA has received 138 reports of itching in dogs after Fipronil. That is 9.8% of all reports for this medicine, compared with 4.3% across reports for all dog medicines, so it is reported unusually often with this medicine.

Sponsored

How soon it started

How the animals did

Problems reported at the same time

Age of the animals

About this medicine

Fipronil kills fleas and ticks (spot-on).

Questions owners ask

Can Fipronil cause itching in dogs?

138 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 35 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).

Itching with similar medicines

• Itching after Spinosad (Comfortis) 3,874 reports · 6.8% of its reports
• Itching after Lufenuron + Milbemycin Oxime (Sentinel) 1,223 reports · 4.7% of its reports
• Itching after Imidacloprid + Moxidectin (Advantage Multi) 2,227 reports · 17% of its reports
• Itching after Nitenpyram (Capstar) 1,450 reports · 13% of its reports
• Itching after Lufenuron + Milbemycin Oxime + Praziquantel (Sentinel Spectrum) 281 reports · 2.8% of its reports
• Itching after Fipronil + S-methoprene (Frontline Plus) 330 reports · 11% of its reports
• Itching after Flumethrin + Imidacloprid (Seresto) 610 reports · 27% of its reports
• Itching after Imidacloprid 297 reports · 16% of its reports
• Itching after Lufenuron 178 reports · 17% of its reports
• Itching after Imidacloprid + Permethrin + Pyriproxyfen 206 reports · 28% of its reports

All reported side effects of Fipronil in dogs · Medicines most reported with itching