Elevated bile acids after Fluralaner (Bravecto) in dogs

The FDA has received 53 reports of elevated bile acids in dogs after Fluralaner. That is 0.1% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported less often than average with this medicine.

53Reports
96%Marked serious
5.7%Recovered
17%Died or euthanised
17 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
2 6.7%
1–2 days
6 20%
3–7 days
4 13%
1–4 weeks
7 23%
Over a month
11 37%

How the animals did

Recovered
1 1.9%
Recovered with lasting effects
2 3.8%
Still unwell when reported
31 58%
Died
6 11%
Euthanised
3 5.7%
Not known
10 19%

Problems reported at the same time

Age of the animals

Under 1 year
5
1–3 years
6
4–7 years
19
8–11 years
16
12+ years
6

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 elevated bile acids in dogs?
53 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 17 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).

Elevated bile acids with similar medicines

All reported side effects of Fluralaner in dogs · Medicines most reported with elevated bile acids