Balance problem after Fluralaner (Bravecto) in dogs

95 reports to the FDA describe balance problem in dogs given Fluralaner. That is 0.1% of all reports for this medicine, compared with 0.1% across reports for all dog medicines.

95Reports
80%Marked serious
22%Recovered
19%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
16 31%
1–2 days
12 23%
3–7 days
4 7.7%
1–4 weeks
7 13%
Over a month
13 25%

How the animals did

Recovered
19 20%
Recovered with lasting effects
2 2.1%
Still unwell when reported
44 46%
Died
6 6.3%
Euthanised
12 13%
Not known
12 13%

Problems reported at the same time

Age of the animals

Under 1 year
9
1–3 years
16
4–7 years
21
8–11 years
23
12+ years
25

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 balance problem in dogs?
95 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 2 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).

Balance problem with similar medicines

All reported side effects of Fluralaner in dogs · Medicines most reported with balance problem