Abnormal radiograph finding after Fluralaner (Bravecto) in dogs

489 reports to the FDA describe abnormal radiograph finding in dogs given Fluralaner. That is 0.7% of all reports for this medicine, compared with 0.9% across reports for all dog medicines.

489Reports

97%Marked serious

11%Recovered

38%Died or euthanised

3 daysTypical onset

How soon it started

Same day

65 20%

1–2 days

96 29%

3–7 days

41 12%

1–4 weeks

42 13%

Over a month

88 27%

How the animals did

Recovered

37 7.6%

Recovered with lasting effects

19 3.9%

Still unwell when reported

179 37%

Died

55 11%

Euthanised

132 27%

Not known

67 14%

Problems reported at the same time

231 47%

229 47%

214 44%

187 38%

167 34%

124 25%

106 22%

86 18%

Age of the animals

Under 1 year

1–3 years

4–7 years

131

8–11 years

159

12+ years

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 abnormal radiograph finding in dogs?: 489 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).

Abnormal radiograph finding with similar medicines

Abnormal radiograph finding after Afoxolaner (NexGard) 315 reports · 0.6% of its reports
Abnormal radiograph finding after Sarolaner (Simparica) 66 reports · 0.4% of its reports
Abnormal radiograph finding after Lotilaner (Credelio) 69 reports · 0.7% of its reports
Abnormal radiograph finding after Afoxolaner + Moxidectin + Pyrantel (NexGard PLUS) 42 reports · 0.5% of its reports

All reported side effects of Fluralaner in dogs · Medicines most reported with abnormal radiograph finding