Decreased packed cell volume (pcv) after Fluralaner (Bravecto) in dogs
The FDA has received 239 reports of decreased packed cell volume (pcv) in dogs after Fluralaner. That is 0.3% 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.
How soon it started
How the animals did
Problems reported at the same time
Age of the animals
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 decreased packed cell volume (pcv) in dogs?
- 239 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 5 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).
Decreased packed cell volume (pcv) with similar medicines
- Decreased packed cell volume (pcv) after Afoxolaner (NexGard) 83 reports · 0.1% of its reports
All reported side effects of Fluralaner in dogs · Medicines most reported with decreased packed cell volume (pcv)