Falling after Fluralaner (Bravecto) in dogs

The FDA has received 553 reports of falling in dogs after Fluralaner. That is 0.8% of all reports for this medicine, compared with 0.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

553Reports
88%Marked serious
33%Recovered
16%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
78 26%
1–2 days
66 22%
3–7 days
46 15%
1–4 weeks
42 14%
Over a month
67 22%

How the animals did

Recovered
162 29%
Recovered with lasting effects
19 3.4%
Still unwell when reported
221 40%
Died
31 5.6%
Euthanised
55 9.9%
Not known
65 12%

Problems reported at the same time

Age of the animals

Under 1 year
39
1–3 years
87
4–7 years
154
8–11 years
130
12+ years
137

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 falling in dogs?
553 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 3 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).

Falling with similar medicines

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