Drinking a lot after Fluralaner (Bravecto) in dogs

209 reports to the FDA describe drinking a lot in dogs given Fluralaner. That is 0.3% of all reports for this medicine, compared with 0.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

209Reports
73%Marked serious
21%Recovered
17%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
47 35%
1–2 days
35 26%
3–7 days
15 11%
1–4 weeks
8 5.9%
Over a month
31 23%

How the animals did

Recovered
37 18%
Recovered with lasting effects
6 2.9%
Still unwell when reported
107 51%
Died
14 6.7%
Euthanised
22 11%
Not known
23 11%

Problems reported at the same time

Age of the animals

Under 1 year
11
1–3 years
33
4–7 years
71
8–11 years
58
12+ years
34

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 drinking a lot in dogs?
209 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 1 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).

Drinking a lot with similar medicines

All reported side effects of Fluralaner in dogs · Medicines most reported with drinking a lot