Skin scab after Fluralaner (Bravecto) in dogs

193 reports to the FDA describe skin scab in dogs given Fluralaner. That is 0.3% of all reports for this medicine, compared with 0.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

193Reports
77%Marked serious
14%Recovered
4.1%Died or euthanised
5 daysTypical onset
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How soon it started

Same day
15 12%
1–2 days
30 25%
3–7 days
27 22%
1–4 weeks
22 18%
Over a month
27 22%

How the animals did

Recovered
26 13%
Recovered with lasting effects
1 0.5%
Still unwell when reported
128 66%
Died
3 1.6%
Euthanised
5 2.6%
Not known
30 16%

Problems reported at the same time

Age of the animals

Under 1 year
14
1–3 years
57
4–7 years
62
8–11 years
38
12+ years
20

About this medicine

Fluralaner kills fleas and ticks for up to 12 weeks (chewable or spot-on).

Products with this ingredient include Bravecto. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

In 2018 the FDA alerted owners and vets that isoxazoline products have been associated with neurologic reactions such as muscle tremors, wobbliness (ataxia) and seizures, including in animals with no history of them.

Questions owners ask

Can Fluralaner cause skin scab in dogs?
193 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).

Skin scab with similar medicines

All reported side effects of Fluralaner in dogs · Medicines most reported with skin scab