Excessive licking and/or grooming after Fluralaner (Bravecto) in cats

The FDA has received 81 reports of excessive licking and/or grooming in cats after Fluralaner. That is 0.8% of all reports for this medicine, compared with 0.6% across reports for all cat medicines.

81Reports
63%Marked serious
21%Recovered
1.2%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
44 63%
1–2 days
8 11%
3–7 days
10 14%
1–4 weeks
4 5.7%
Over a month
4 5.7%

How the animals did

Recovered
17 21%
Still unwell when reported
55 68%
Died
1 1.2%
Not known
8 9.9%

Problems reported at the same time

Age of the animals

Under 1 year
3
1–3 years
19
4–7 years
25
8–11 years
23
12+ years
10

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 excessive licking and/or grooming in cats?
81 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 the same day 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).

Excessive licking and/or grooming with similar medicines

All reported side effects of Fluralaner in cats · Medicines most reported with excessive licking and/or grooming