Stumbling gait after Fluralaner (Bravecto) in dogs

214 reports to the FDA describe stumbling gait in dogs given Fluralaner. That is 0.3% of all reports for this medicine, compared with 0.2% across reports for all dog medicines.

214Reports
82%Marked serious
31%Recovered
14%Died or euthanised
2 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
28 23%
1–2 days
40 33%
3–7 days
17 14%
1–4 weeks
18 15%
Over a month
19 16%

How the animals did

Recovered
60 28%
Recovered with lasting effects
7 3.3%
Still unwell when reported
92 43%
Died
13 6.1%
Euthanised
18 8.4%
Not known
24 11%

Problems reported at the same time

Age of the animals

Under 1 year
18
1–3 years
40
4–7 years
45
8–11 years
59
12+ years
49

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 stumbling gait in dogs?
214 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).

Stumbling gait with similar medicines

All reported side effects of Fluralaner in dogs · Medicines most reported with stumbling gait