Hair modification after Spinosad (Comfortis) in dogs
The FDA has received 25 reports of hair modification in dogs after Spinosad. That is 0.0% of all reports for this medicine, compared with 0.1% across reports for all dog medicines.
25Reports
16%Marked serious
8.0%Recovered
0.0%Died or euthanised
–Typical onset
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How the animals did
Problems reported at the same time
Age of the animals
About this medicine
Spinosad kills fleas; monthly chewable.
Products with this ingredient include Comfortis. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.
Questions owners ask
- Can Spinosad cause hair modification in dogs?
- 25 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.
- 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 modification with similar medicines
- Hair modification after Imidacloprid + Moxidectin (Advantage Multi) 38 reports · 0.3% of its reports
All reported side effects of Spinosad in dogs · Medicines most reported with hair modification