Blood problems after Fipronil in dogs
20 reports to the FDA describe blood problems in dogs given Fipronil. That is 1.4% of all reports for this medicine, compared with 1.8% across reports for all dog medicines.
20Reports
85%Marked serious
10%Recovered
30%Died or euthanised
144 daysTypical onset
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 blood problems in dogs?
- 20 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 144 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).
Blood problems with similar medicines
- Blood problems after Spinosad (Comfortis) 364 reports · 0.6% of its reports
- Blood problems after Lufenuron + Milbemycin Oxime (Sentinel) 184 reports · 0.7% of its reports
- Blood problems after Imidacloprid + Moxidectin (Advantage Multi) 88 reports · 0.7% of its reports
- Blood problems after Nitenpyram (Capstar) 54 reports · 0.5% of its reports
- Blood problems after Lufenuron + Milbemycin Oxime + Praziquantel (Sentinel Spectrum) 49 reports · 0.5% of its reports
- Blood problems after Fipronil + S-methoprene (Frontline Plus) 23 reports · 0.8% of its reports
- Blood problems after Flumethrin + Imidacloprid (Seresto) 28 reports · 1.2% of its reports
- Blood problems after Lufenuron 27 reports · 2.7% of its reports
All reported side effects of Fipronil in dogs · Medicines most reported with blood problems