Administration error after Fluralaner (Bravecto) in dogs

701 reports to the FDA describe administration error in dogs given Fluralaner. That is 1.0% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

701Reports
17%Marked serious
22%Recovered
0.4%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
153 61%
1–2 days
13 5.2%
3–7 days
11 4.4%
1–4 weeks
20 8.0%
Over a month
53 21%

How the animals did

Recovered
153 22%
Recovered with lasting effects
4 0.6%
Still unwell when reported
515 73%
Died
3 0.4%
Not known
26 3.7%

Problems reported at the same time

Age of the animals

Under 1 year
60
1–3 years
189
4–7 years
188
8–11 years
126
12+ years
71

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 administration error in dogs?
701 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).

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